Three anonymized production cases — fine blanking, EV motor cores and hot stamping — showing how material specification and process control translate into measurable part performance.
| Case | Industry | Material | Challenge | Key solution |
|---|---|---|---|---|
| 01 Fine Blanking Component | Automotive Tier 1, Asia | SAE1078, 1.5mm, spheroidized | Shear-face tearing, short die life | Optimized spheroidization + 170–190 HB hardness band |
| 02 EV Traction Motor Core | EV Manufacturer, Europe | 50WW470, 0.50mm | Elevated core loss, punch burr | Core loss ≤4.70 W/kg + burr ≤0.02mm + stress-relief anneal |
| 03 Hot-Stamped B-Pillar | OEM, North America | 22MnB5+AS, 1.8mm | Al-Si coating spall, uneven quench hardness | Coating ~10µm + optimized heating curve + die cooling |
All cases anonymized. Specific performance data available under NDA.
Tier 1 Supplier, Asia — anonymized
SAE1078 high carbon steel strip, spheroidized (soft-annealed), 1.5 mm thickness, slit to progressive-die width.
The customer experienced intermittent shear-face tearing on a fine-blanked automotive component and shortened die life. Root cause analysis pointed to inconsistent spheroidization and hardness variation across coil segments, causing uneven material flow during blanking.
We optimized the spheroidizing annealing cycle to produce a more uniform carbide distribution, and tightened the delivery hardness band to 170–190 HB. Coil-to-coil hardness consistency was verified on every heat before dispatch, and edge burr was controlled on the slitting line.
Shear-face quality improved significantly and die life increased — the customer reported a measurable reduction in tooling changes per production run. Specific percentage improvement confirmed at RFQ; trial data available under NDA.
Related: Fine Blanking Steel · Seat Recliner Application · Spheroidizing Annealing Guide
EV Manufacturer, Europe — anonymized
50WW470 non-oriented electrical steel, 0.50 mm thickness, semi-processed delivery for stator and rotor lamination stamping.
Measured core loss on stamped laminations was higher than the grade guarantee, and punch burr exceeded the customer's stacking tolerance. Both issues reduced motor efficiency and increased assembly rework.
We confirmed core loss ≤ 4.70 W/kg (at 50 Hz, 1.5 T) per the grade specification on every coil MTC. The customer implemented stress-relief annealing after stamping, and we controlled slitting burr to ≤ 0.02 mm through optimized tooling setup and edge inspection.
Post-annealing core loss met the motor design target, and lamination stacking quality improved with reduced burr. Motor efficiency on test builds was described by the customer as significantly improved versus the previous supply. Detailed efficiency curves available under NDA.
Related: Electrical Steel Range · EV Motor Core Application · Core Loss Guide
OEM, North America — anonymized
22MnB5+AS press-hardening steel with Al-Si coating, 1.8 mm thickness, supplied as blanked blanks for hot stamping.
Al-Si coating spalled during furnace transfer, and quenched hardness varied across the part — both conditions threatened the structural integrity of the B-pillar reinforcement and caused dimensional distortion.
We controlled Al-Si coating thickness to approximately 10 µm per side and verified coating adhesion on incoming material. Working with the customer's stamping team, we optimized the furnace heating curve and confirmed die cooling channel uniformity to achieve consistent quenching across the part geometry.
Coating integrity was maintained through the hot stamping cycle, and as-quenched tensile strength stabilized in the 1300–1500 MPa range across production runs. Part rejection rate due to hardness scatter decreased significantly. Specific process parameters and production data available under NDA.
Related: Press Hardening Steel · B-Pillar Application · Press Hardening Process Guide
Anonymization notice: Case studies are anonymized to protect customer confidentiality. Customer names, company identities, specific production volumes and detailed performance metrics are not disclosed. Specific data, trial reports and process parameters are available under a mutual Non-Disclosure Agreement (NDA). Contact us to discuss a similar application.
These grade families share material, processing or application territory with the topic on this page.
SAE1078 / 65Mn / SK5 grades for hardened parts, springs and cutting edges.
DP / TRIP / HSLA grades (HC180YD, HC260LA, DP590) combining strength with formability for lightweighting.
65Mn / 50CrV4 / 60Si2Mn grades with high elastic limit and fatigue resistance.
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