Two sheet-metal separation processes that look similar on the shop floor but diverge fundamentally in deformation mechanism, material requirements, die life, cut surface quality, and total cost. This comparison is written from the steel strip supplier perspective — what each process demands from the incoming material, and where the economic break-even lies.
Both processes cut sheet metal between a punch and a die. The difference is what happens inside the material during the cut — and that difference drives every downstream requirement for material, tooling, and cost.
Conventional stamping. A single-action press drives the punch into the sheet against a die with a clearance typically 5–15% of material thickness per side. As the punch penetrates, the material first deforms plastically (the roll-over zone), then shears along a narrow band (the burnished zone), and finally fractures through the remaining thickness (the fractured zone). The fracture surface is rough and irregular, and a burr forms at the die edge where the final tear occurs. The entire separation is driven by punch force alone — there is no counterpressure holding the material from the opposite side. The cut edge consists of approximately 10–30% burnished zone and 50–70% fractured zone, with the remainder as roll-over. This is adequate for parts where the cut edge is non-functional, but it requires deburring for most applications and cannot hold tight dimensional tolerances on the cut surface.
Fine blanking. A triple-action press applies three forces simultaneously: (1) the punch force drives the punch into the sheet; (2) the V-ring counterpressure — a sharp V-shaped indenter on the blank holder — penetrates the sheet around the perimeter of the part, clamping the material and creating a hydrostatic compressive stress state in the shear zone; and (3) the ejector force from the die side pushes upward against the part, opposing the punch. The die clearance is extremely tight — typically 0.5–1.0% of material thickness per side, compared with 5–15% in conventional stamping. The combination of hydrostatic compression, tight clearance, and counterpressure suppresses crack initiation and propagation. Instead of shearing and fracturing, the material flows plastically through nearly 100% of the thickness. The result is a smooth, burnished cut face with no fractured zone, minimal roll-over, and very low burr.
Deformation mechanism: plastic flow vs shear fracture. This is the core distinction. In conventional stamping, the material is intentionally broken — the process relies on fracture to complete the cut, and the microstructure of the steel has relatively little influence on whether the cut succeeds. In fine blanking, fracture is the enemy. The process must keep the material in a state of plastic flow throughout the entire stroke, which means the steel must be soft enough to flow, ductile enough not to tear, and microstructurally stable enough not to work-harden into brittleness mid-stroke. This is why fine blanking imposes strict requirements on carbon content, hardness, and spheroidized microstructure — requirements that conventional stamping simply does not need.
For a detailed specification of the material window that fine blanking requires, refer to the companion fine blanking material requirements complete guide.
The most consequential difference for a steel supplier. Fine blanking demands a narrow material window; conventional stamping accepts a broad range of delivery conditions and chemistries.
| Parameter | Fine blanking requirement | Conventional stamping requirement | Why the difference |
|---|---|---|---|
| Microstructure | Fully spheroidized cementite ≥90% in ferrite matrix; no lamellar pearlite above 10%; bainite/martensite prohibited | No requirement — full-hard, half-hard, annealed, as-rolled, or spheroidized all acceptable | Globular carbides flow with the matrix under hydrostatic compression; lamellar carbides fracture and initiate tears. Conventional stamping relies on fracture, so microstructure is irrelevant to cut success. |
| Carbon content | ≤0.85% practical upper limit; ≤0.75% for parts thicker than 4 mm; low carbon ≤0.12%, medium 0.30–0.50%, high 0.70–0.85% | Wide range — from ultra-low carbon (≤0.03%) to high carbon (up to ~1.0% C) and alloy grades; carbon affects die life but not process feasibility | Above 0.85% C, carbide volume is too high for plastic flow even when spheroidized. Conventional stamping can cut any carbon grade because fracture separation does not depend on ductility. |
| Hardness (as-delivered) | Controlled band: 120–160 HB (low C); 160–200 HB (medium/high C spheroidized); within-coil variation ≤20 HB; lower bound critical to avoid dimensional drift | Full-hard (up to ~60 HRC for spring steel), half-hard, quarter-hard, or annealed — all acceptable; hardness affects die wear and press tonnage but not process feasibility | Fine blanking requires the material to be soft enough to flow but not so soft that it drifts. Conventional stamping simply needs enough press tonnage to shear whatever hardness is presented. |
| Sulfur / Phosphorus | Low S ≤0.030% (preferred ≤0.015% for precision); low P ≤0.030% (preferred ≤0.020%); inclusion rating controlled per ASTM E45 | Standard commercial limits acceptable; resulfurized free-machining grades (11xx series) can be stamped though die wear increases | MnS stringers and P segregation act as crack initiation sites under fine blanking's plastic flow regime. In conventional stamping, inclusions have minimal effect because the cut is already a fracture. |
| Thickness range | 0.5–8 mm typical; most production 1.5–5 mm; above 8 mm requires specialized high-tonnage presses | 0.1 mm (foil) to 12+ mm (heavy plate); limited only by press tonnage and die construction | Below 0.5 mm the V-ring cannot penetrate effectively; above 8 mm the deformation path is too long and press tonnage becomes prohibitive. |
| Flatness | ≤5 I-units (precision); ≤10 I-units (general); edge/center wave ≤2 mm/m | Generally ≤15–20 I-units acceptable; wavy strip can often be flattened in the die | The V-ring must contact the strip uniformly across the full width; wavy strip causes uneven counterpressure and dimensional drift in fine blanking. |
| Surface condition | Bright or pickled-and-oiled; controlled roughness Ra 0.2–0.8 µm; no deep scratches, oxidation, or edge burr >5% thickness | Wide tolerance — hot-rolled pickled, cold-rolled, galvanized, pre-painted all acceptable; surface defects often hidden or non-critical | The fine blanked cut face and part surface are often functional as-blanked; surface defects cannot be removed without secondary operations that defeat the process advantage. |
Ranges are industry typical reference values, not a quality commitment. Actual limits are confirmed per grade standard (ASTM A109, EN 10132, JIS G4051) and per purchase specification. Fine blanking material requirements are detailed in the material requirements guide.
Practical implication for procurement. A steel mill that supplies conventional stamping quality cannot automatically supply fine blanking quality. The spheroidizing anneal is a dedicated thermal process — typically 8–12 hours at 700–720°C followed by controlled cooling at ≤20°C/hour to 500°C — that requires furnace atmosphere control and careful coil packing. SAE1078 steel strip supplied as conventional cold-rolled full-hard material is not fine-blankable; the same chemistry supplied as fully spheroidized 160–200 HB strip is. The grade name alone is insufficient — the delivery condition (spheroidized, hardness band, microstructure certification) must be specified on the purchase order. HS-FINEB supplies fine blanking steel in SAE1010, SAE1035, SAE1078, 65Mn, C67S and C75S with full MTC documentation per coil, including spheroidization ratio and hardness uniformity.
Fine blanking dies cost more and operate under higher stress, but the precision cut they deliver changes the total-cost equation. Conventional stamping die life spans an enormous range depending on die quality and material.
Fine blanking die construction and life. Fine blanking dies are precision tools built from high-carbon high-chromium tool steel (typically X153CrMoV12, equivalent to AISI D2) or cemented carbide for high-wear components. The die clearance is 0.5–1.0% of material thickness per side — an order of magnitude tighter than conventional stamping — which means the punch and die edges are under extreme contact pressure. The V-ring indenter on the blank holder is a separate wear component that must be reground or replaced periodically. Typical die life (strokes between regrinds) for fine blanking:
Total die life before retirement (multiple regrinds) typically reaches 10–30 million strokes for low- and medium-carbon steel, and 5–15 million for high-carbon. The key factors affecting fine blanking die life are: material hardness (higher hardness accelerates wear), lubrication (extreme-pressure lubricants or phosphate coatings are standard), V-ring pressure (higher pressure improves cut quality but increases indenter wear), and die maintenance regime (regular regrinding at the first sign of burr increase prevents catastrophic edge chipping).
Conventional stamping die construction and life. Conventional stamping dies range from simple low-cost tools in pre-hardened tool steel (P20, 4140) for short runs to high-speed steel (M2, M4) or carbide progressive dies for high-volume automotive production. Die life varies by orders of magnitude:
The wider clearance (5–15% of thickness) in conventional stamping reduces edge loading, so die wear is generally slower per stroke for equivalent material. However, conventional dies often must be designed to accommodate burr growth and may require more frequent sharpening if burr height exceeds the part specification. The largest variable in conventional stamping die life is the material being stamped — full-hard spring steel or AHSS can reduce die life by a factor of 5–10 compared with soft low-carbon steel.
Cost per stroke comparison. A fine blanking die typically costs 2–4× more than a comparable conventional stamping die, and the fine blanking press itself costs 2–3× more than a conventional press of equivalent tonnage. However, the fine blanking die produces a finished part that requires no secondary deburring or grinding. If a conventionally stamped part requires $0.10 of secondary machining per piece, the fine blanking tooling premium is recovered at 20,000–50,000 parts for the die cost alone, before accounting for the press investment. At volumes above 100,000 parts per year, fine blanking is often the lower total-cost route for precision parts.
The cut edge is where the two processes are most visibly different. Fine blanking delivers a functional surface as-blanked; conventional stamping delivers a cut edge that almost always needs secondary work for precision applications.
| Cut-face parameter | Fine blanking | Conventional stamping | Functional implication |
|---|---|---|---|
| Burnished (smooth) zone | ≥90% of material thickness, typically 95–100% | 10–30% of material thickness | Fine blanked cut face is smooth enough to function as a bearing surface, gear tooth flank, or seal surface without grinding. Conventional cut face is rough and must be machined for functional surfaces. |
| Fractured zone | None (0–5%, only at extreme thickness or difficult grades) | 50–70% of material thickness | Fractured zone is rough, irregular, and has micro-cracks at the surface. It reduces fatigue life and cannot be used as a functional surface. |
| Roll-over (rollover) | 10–20% of material thickness | 20–40% of material thickness | Roll-over reduces the effective functional width of the part. Fine blanking's lower roll-over is critical for thin parts and gear teeth where the full tooth width must engage. |
| Burr height | ≤5% of thickness, typically ≤0.05 mm; often negligible as-blanked | 5–20% of thickness, typically 0.1–0.5 mm; requires deburring for most applications | Fine blanked parts often ship without deburring. Conventionally stamped parts require tumbling, vibratory finishing, grinding, or robotic deburring — adding cost and handling. |
| Dimensional accuracy (cut features) | IT7–IT9 | IT10–IT12 | Fine blanking can hold hole-to-edge distances and profile tolerances to ±0.02–0.05 mm. Conventional stamping typically holds ±0.1–0.3 mm on cut features. |
| Surface roughness of cut face (Ra) | 0.4–1.6 µm (smooth, burnished) | 3.2–12.5 µm (fractured, rough) | Fine blanked cut face can be plated or painted directly. Conventional cut face may require smoothing before coating for aesthetic or corrosion-critical parts. |
| Squareness of cut edge | Near 90° (≤0.5° deviation typical) | 5–15° taper from burnished to fractured zone | Fine blanked parts stack flat and assemble with full face contact. Conventionally stamped parts have a tapered edge that can cause misalignment in stacked assemblies. |
Values are industry typical reference ranges for 2–4 mm thick medium-carbon steel. Actual results vary by material grade, thickness, die condition, and press parameters. Burr and roll-over percentages are expressed as a fraction of material thickness.
Why cut quality matters beyond aesthetics. For structural and functional parts, the cut edge is a load-bearing surface. The fractured zone in conventional stamping contains micro-cracks and residual tensile stresses that reduce fatigue life — a conventionally stamped gear tooth may fail at 50,000 cycles where a fine blanked tooth of the same material and geometry survives 500,000 cycles. The smooth, work-hardened cut face of a fine blanked part actually has higher surface hardness than the base material (cold working during the blanking stroke increases hardness by 10–30% at the shear surface), which improves wear resistance in gear and ratchet applications. For parts where the cut face engages another component — seat recliner sector gears, door lock ratchets, clutch plate teeth — the fine blanked surface is the functional surface, and eliminating grinding is both a cost saving and a quality improvement.
For a detailed analysis of burr formation and prevention in fine blanking, refer to the fine blanking burr causes and prevention guide.
Fine blanking has higher fixed costs (tooling, press) and lower variable costs (no secondary machining). Conventional stamping has lower fixed costs and higher variable costs when deburring or grinding is required. The break-even volume depends on how much secondary work the conventional route needs.
| Cost element | Fine blanking | Conventional stamping (with secondary ops) | Conventional stamping (no secondary ops) |
|---|---|---|---|
| Material cost per part | Premium for spheroidized strip — typically 10–30% higher than conventional cold-rolled strip of the same grade | Standard commercial strip — lowest material cost | Standard commercial strip — lowest material cost |
| Tooling amortization per part | Higher — die cost 2–4× conventional; amortized over 5–30 million strokes | Lower — die cost baseline; amortized over 0.1–10 million strokes depending on die quality | Lower — die cost baseline |
| Equipment cost per part | Higher — triple-action fine blanking press costs 2–3× conventional press; higher hourly rate | Lower — standard single-action press; lower hourly rate | Lower — standard single-action press |
| Labor per part | Lower — single operation, parts exit ready-to-assemble; minimal handling | Higher — stamping + deburring + grinding/reaming; multiple handling steps, WIP inventory | Lower — single operation, though parts may need basic deburring |
| Secondary operations per part | None required for most parts — cut face is functional as-blanked | $0.05–$0.50 per part for deburring, grinding, shaving, or reaming depending on complexity | $0–$0.05 per part for basic tumble deburring |
| Scrap / rework rate | Lower — consistent dimensional accuracy, minimal burr variation; typical scrap <1% | Higher — burr variation, dimensional drift, secondary operation defects; typical scrap 2–5% | Low–moderate — typical scrap 1–3% |
| Total cost per part (representative) | $0.30–$1.50 (medium complexity, 2–4 mm, medium carbon) | $0.40–$2.00 (same part, including secondary ops) | $0.15–$0.80 (simple flat part, no precision requirement) |
Cost figures are industry typical reference ranges for illustrative comparison only. Actual costs vary by part geometry, material grade, thickness, annual volume, labor rates, and local manufacturing costs. These are not quotes — contact HS-FINEB for a specific part quotation.
Break-even analysis. The economic decision hinges on whether the conventionally stamped part requires secondary machining. For a simple flat bracket with no precision cut-face requirement and no secondary operations, conventional stamping is cheaper at any volume — the lower tooling and equipment costs never catch up. For a precision functional part (gear, ratchet, clutch plate) where the conventional route requires deburring + grinding at $0.15 per part, the break-even calculation is straightforward:
Fine blanking premium (tooling + press + material) ≈ $20,000–$50,000 one-time
Conventional secondary operation cost = $0.15 × annual volume
Break-even volume = $20,000–$50,000 / $0.15 ≈ 130,000–330,000 parts (one-year payback)
With multi-year amortization, effective break-even ≈ 50,000–200,000 parts/year
Below the break-even volume, the higher fine blanking tooling and press costs are not recovered. Above it, the elimination of secondary operations makes fine blanking cheaper on a total-cost basis, and the gap widens as volume increases. Parts that require multiple secondary operations (deburring + grinding + reaming + heat treat fixturing) have an even lower break-even because the conventional variable cost is higher.
Hidden costs in conventional stamping. The cost comparison often underestimates conventional stamping's true cost for precision parts. Secondary deburring is not just a direct labor cost — it generates work-in-progress inventory, requires additional floor space and equipment, introduces quality variation (deburring consistency is operator-dependent), and can damage delicate features if not controlled. Heat treatment after conventional stamping requires fixturing to prevent distortion from the residual stresses in the fractured cut edge; fine blanked parts have lower residual stress and distort less during quenching, reducing heat-treat scrap. These hidden costs can add 10–20% to the conventional stamping total cost that is not captured in a simple per-part operation cost comparison.
The part's function determines the process. If the cut face is a working surface that engages another component, fine blanking is usually the right choice. If the part is a simple cover, bracket, or spacer where the cut edge is non-functional, conventional stamping is more economical.
Why fine blanking: The gear teeth must engage a pawl tooth-on-tooth with zero backlash and no noise. The tooth flank is a functional wear surface that must be smooth and dimensionally consistent to IT8. Conventional stamping would produce a fractured tooth surface that requires gear shaving or grinding — adding $0.20–$0.40 per part and introducing tooth-to-tooth variation. Fine blanking delivers the tooth profile ready-for-assembly, with a work-hardened smooth flank that improves wear resistance. This is the canonical fine blanking seat recliner application.
Why fine blanking: The ratchet tooth profile must hold a precise latching geometry with consistent engagement force — a safety-critical function. The cut face is the load-bearing surface during crash loading. Dimensional consistency to IT8 and minimal burr are required because the ratchet pivots on a pin and any burr causes binding. Conventional stamping + grinding would work but adds cost and handling at volumes where fine blanking is clearly economical. See fine blanking automotive door locks for the full application analysis.
Why fine blanking: Clutch plate teeth and diaphragm spring fingers are subject to high cyclic loading and require a smooth cut face free of micro-cracks that would initiate fatigue failure. The fractured zone from conventional stamping would reduce fatigue life by an order of magnitude. Fine blanking's smooth, work-hardened cut face maximizes fatigue resistance. The parts are subsequently quenched and tempered — the low residual stress in fine blanked parts minimizes heat-treat distortion. This is a core clutch disc spring application for high-carbon spheroidized steel.
Why conventional stamping: The cut edge is non-functional — it is either hidden in an assembly, welded, or painted over. The part requires forming (bending, drawing) in addition to blanking, which a conventional progressive die handles efficiently. Dimensional tolerance on cut features is IT11–IT12, well within conventional stamping capability. No secondary machining is required beyond basic tumble deburring. Fine blanking would add tooling and press cost with no functional benefit. These parts are the domain of SPCC / SPCD deep-drawing steel and standard cold-rolled strip.
Why conventional stamping: These are simple flat parts with no functional cut-face requirement. The burr from conventional stamping is acceptable (or removed by a cheap tumbling operation). Tooling cost is minimal — a simple blanking die may cost $500–$5,000 compared with $50,000–$200,000 for a fine blanking die. At any volume, the conventional route is cheaper. Fine blanking these parts would be a misapplication of the process.
Work through these five questions in order. The first question that eliminates fine blanking sends the part to conventional stamping. If all five favor fine blanking, the part is a strong candidate — subject to a trial blanking validation.
| Decision step | Question | Favors fine blanking | Favors conventional stamping |
|---|---|---|---|
| 1. Part function | Is the cut face a functional surface that engages, loads, seals, or wears against another component? | Yes — gear teeth, ratchet profiles, clutch teeth, brake shoe edges, sprocket teeth, bearing surfaces, seal contact faces | No — the cut edge is hidden, welded, painted, or non-load-bearing; simple brackets, covers, shims, enclosures |
| 2. Thickness | Is the material thickness within the fine blanking practical range? | 0.5–8 mm, optimally 1.5–5 mm | Below 0.5 mm (foil, thin connectors) or above 8 mm (heavy plate); also very thin high-volume electrical contacts |
| 3. Tolerance / precision | Does the part require cut-feature dimensional accuracy better than IT10, or a smooth cut face (Ra < 1.6 µm) without secondary machining? | IT7–IT9 on cut features; smooth functional cut face; minimal burr (≤0.05 mm); flatness and squareness of cut edge critical | IT10–IT12 or looser; cut face roughness acceptable at Ra 3.2–12.5 µm; burr can be removed by cheap tumbling; edge squareness not critical |
| 4. Annual volume | Is the annual volume above the fine blanking break-even threshold for this part complexity? | ≥50,000 parts/year for parts requiring secondary ops; ≥200,000 for simple precision parts; multi-year production commitment | Below 50,000 parts/year; prototype or short-run; uncertain demand; single-year program |
| 5. Post-processing | Would the conventionally stamped part require deburring, grinding, shaving, reaming, or other secondary machining to meet the functional specification? | Yes — secondary ops would add ≥$0.05 per part; multiple operations required; heat-treat distortion risk from residual stresses | No — part ships as-stamped with minimal or no deburring; no functional surface requirement; heat treat not required or distortion is acceptable |
This decision tree is an industry typical reference framework. It is a screening tool, not a definitive process selection. Always conduct a trial blanking with the actual material coil and die design before committing to production tooling. Parts that score "favors fine blanking" on all five steps are strong candidates; parts that score "favors conventional" on any single step should be evaluated carefully — a single disqualifier (e.g. thickness above 8 mm) is usually sufficient to rule out fine blanking.
Gray-area cases. Some parts fall in the middle — for example, a medium-precision bracket at 80,000 parts/year that requires only light deburring. For these cases, the decision depends on the specific cost numbers: request quotes for both routes, including tooling amortization, secondary operation costs, scrap rates, and heat-treat fixturing costs. A 5-year total-cost-of-ownership comparison will usually clarify the choice. Also consider whether the part family includes other components that could share a fine blanking press — if multiple parts from the same product line are fine blanking candidates, the press utilization improves and the break-even volume drops for each individual part.
For grade-level material selection within the fine blanking route, refer to the fine blanking material selection guide, which covers the 5-step grade decision framework (part function → thickness → carbon → delivery condition → post heat treat).
The process choice determines the material specification. As a steel supplier, the critical distinction is whether the customer's part is fine blanked or conventionally stamped — because the incoming material requirements are fundamentally different, and shipping the wrong delivery condition causes immediate production failure.
When the part is fine blanked. Specify the full material window, not just the grade name. The purchase order must include: (1) grade and chemistry with carbon ≤0.85%; (2) delivery condition — fully spheroidized annealed, with ≥90% globular cementite certified on the MTC; (3) hardness band — 160–200 HB for medium/high carbon, 120–160 HB for low carbon, with within-coil uniformity ≤20 HB; (4) thickness 0.5–8 mm with tolerance to IT8–IT9; (5) flatness ≤5 I-units for precision parts; (6) low sulfur (≤0.015% preferred) and low phosphorus; (7) surface condition — bright or pickled-and-oiled, no deep scratches or edge burr. The MTC must report spheroidization ratio, hardness at head/middle/tail, decarburization depth, and inclusion rating. Acceptable grades for fine blanking include fine blanking steel family: SAE1010 (low carbon, excellent blankability), SAE1035–SAE1050 (medium carbon, good blankability, hardens to 40–50 HRC), SAE1078 and C67S / C75S (high carbon, fair blankability, hardens to 50–60 HRC), and 65Mn (manganese-enhanced high carbon for spring and clutch applications).
When the part is conventionally stamped. The material specification is much simpler. Specify the grade, thickness, width, and surface condition (cold-rolled, hot-rolled pickled, galvanized, etc.). Hardness can be full-hard, half-hard, quarter-hard, or annealed depending on the forming requirements — there is no spheroidization requirement, no hardness band lower bound, and no flatness requirement beyond standard commercial limits. The MTC needs only standard chemistry and mechanical property certification. For parts that require forming (bending, drawing), specify a deep-drawing grade such as SPCC / SPCD or SPCE with appropriate elongation. For high-strength structural parts, AHSS or HSLA grades are standard. The supplier's quality control burden is significantly lower for conventional stamping material.
The cost of mis-specification. Shipping conventionally-supplied cold-rolled full-hard strip to a fine blanking line is a catastrophic failure — the material will not flow, the shear face will tear, the die will chip, and the press may overload. The coil must be returned for spheroidizing anneal, adding 2–4 weeks of delay and 10–20% of material cost in reprocessing. Shipping spheroidized fine blanking strip to a conventional stamping line is merely an economic waste — the part will stamp successfully, but the customer paid a 10–30% material premium for a delivery condition that provides no benefit. Both errors are preventable by confirming the process route and the corresponding material specification at the RFQ stage. HS-FINEB's material specification and consulting services include process-route validation and grade-to-process matching to ensure the incoming material matches the production process.
Final guidance. Fine blanking is the right process for precision functional components where the cut face is a working surface, the volume is above the break-even threshold, and the material can be supplied in the spheroidized condition. Conventional stamping is the right process for everything else — simple parts, non-functional cut edges, very thin or very thick gauges, and low-volume programs. The material supplier's role is to match the delivery condition to the process: spheroidized, hardness-controlled, flat, clean strip for fine blanking; standard commercial strip in the appropriate temper for conventional stamping. Specifying the correct delivery condition on the purchase order — and verifying it on the MTC at incoming inspection — is the single most important quality control step for either process.
These resources cover the fine blanking material specification in detail, the grade selection process, the spheroidizing treatment, and the specific steel grades referenced in this comparison.
The full technical specification for fine blanking steel: carbon window, spheroidized microstructure ≥90%, hardness bands, dimensional tolerances, surface quality, flatness, decarburization, and an incoming material acceptance checklist.
The 5-step grade decision framework (part function → thickness → carbon → delivery condition → post heat treat) with real case studies. Use this after the process decision to select the specific steel grade.
Temperature cycles, hold times, cooling rates, furnace atmosphere control, and common spheroidizing defects — the thermal process that transforms conventional cold-rolled strip into fine-blankable material.
HS-FINEB spheroidized fine blanking steel strip in SAE1010, SAE1035, SAE1078, 65Mn, C67S and C75S, with full MTC per coil including spheroidization ratio and hardness uniformity.
Include part function, thickness × width, annual volume, tolerance requirements, and post-processing needs. Our engineers reply within one working day with a process recommendation, material specification, and quotation.