65Mn Brake Shim Plate for Aftermarket - 65Mn, Fine Blanking + Heat Treatment
65Mn Brake Shim Plate for Aftermarket
Spring steel shim plate for vehicle brake systems. Fine blanked and heat-treated to HRC 45-50, flatness 0.05 mm across 50 mm.
- Thickness
- 1.0 - 1.5 mm
- Tolerance
- +/- 0.025 mm
- MOQ
- 5,000 pcs
- Annual Volume
- 200,000 - 1,000,000 pcs
- Lead Time
- 25-35 business days
Full specifications
| Material | 65Mn spring steel (GB/T 699) |
|---|---|
| Thickness | 1.0 - 1.5 mm |
| Process | Fine blanking + heat treatment + tempering |
| Hardness | HRC 45-50 after heat treatment |
| Flatness | 0.05 mm across 50 mm |
| Tolerance | +/- 0.025 mm on thickness |
| MOQ | 5,000 pcs |
Design considerations
Real engineering notes from the press line.
- ! Fine blanking (vs conventional stamping) yields an edge with < 1% fracture zone - critical for shim parts that must be flat-true.
- ! Heat treatment can introduce up to 0.02 mm of dimensional change - grit blast or vibratory deburr after heat treatment.
- ! Material certificates with chemistry and hardness are provided per lot for aftermarket compliance.
Common applications
Frequently asked questions
What is the difference between fine blanking and conventional stamping for shim parts?
Fine blanking uses a three-way force system (die + counter + ejector) to suppress the fracture zone, giving an edge that is fully dense and flat. Conventional stamped parts have a 5-15% fracture zone that requires secondary machining for high-precision shim applications.
Why does MOQ start at 5,000 pcs?
Fine blanking tooling has a higher upfront cost than conventional stamping (roughly ,000-,000 per cavity) and a longer lead time (5-7 weeks). The MOQ reflects the break-even on tooling amortization.
Are these PPAP-compliant?
Material certificates and dimensional reports are provided per lot. Full PPAP submission is available on request at additional cost - typically - depending on element count.
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