Hardened Plates
Hardened plates backing core pins for extended mold life.
Products
M2 Steel Hardened Plates for Core - Top & Bottom Ground | Precise Parallel Surfaces
M2 Steel hardened plates for core with top and bottom faces ground for stable machining. Tight parallelism supports precision die and mold assemblies—
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Hardened Plates for Core 6-Face Ground | Hardened Core Plate Manufacturing
Hardened Plates for Core 6-Face Ground for M2/H13 core applications, with 6-face ground surfaces. Durable hardened construction for stable machining a
View DetailsBacking Plate Pairing Guide
Core pins transmit massive localized compressive forces. If the backing plate is too soft, the pin heads will indent the plate, causing the pins to sink and altering wall thickness.
| Pin Type / Force | Required Backing Plate Material | Minimum Hardness | Risk if Under-Spec'd |
|---|---|---|---|
| Standard Ejector Pins (Low Force) | S45C (Standard Carbon Steel) | HRC 20-25 | Minor hobbing over 500k cycles |
| Block Core Pins (Med Force) | P20 / NAK80 (Pre-hardened) | HRC 35-40 | Pins sink 0.1mm, causing flash |
| Large Cavity Inserts (Extreme Force) | SKD11 / H13 (Fully Hardened) | HRC 55-60 | Severe plate indentation, dimensional failure |
Application Scenarios
High-Pressure Thin-Wall Molding
Injection pressures exceed 1500 bar. Core pins act like punches, trying to drive into the back plate.
Multi-Cavity Interchangeable Molds
Frequent changeovers of core pins lead to wear on the backing plate surface.
Technical Resources
Need a Custom Quote?
Send your specifications and receive a quote. MOQ: 1 piece. Custom dimensions available.