10Ni3MnCuAl (PMS) plastic mold steel is an advanced precipitation-hardening type steel with superior mirror-finish capabilities, specifically designed for high-precision plastic molds.
1. Exceptional Mirror Machining Performance
Ultra-low surface roughness: After polishing, the surface roughness can reach Ra 0.05–0.12 μm, meeting the requirements for high-gloss molds, such as optical components and electronic product housings.
Excellent pattern etching capability: Suitable for manufacturing precision molds requiring surface photolithographic patterns, such as cosmetic boxes and dust covers.
2. High Hardness and Uniformity
Pre-hardened hardness: The factory-delivered hardness ranges from 37 to 43 HRC, enabling direct machining without heat treatment and eliminating the risk of deformation caused by thermal processing.
Uniform hardness distribution: Consistent hardness from the surface to the core ensures dimensional stability of the mold, particularly for flat steel sections with thicknesses ranging from 15 to 150 mm.
3. Excellent Wear and Corrosion Resistance
Wear resistance: Maintains mold accuracy under high-temperature and high-pressure conditions, extending service life in applications such as automotive parts and precision threaded molds.
Corrosion resistance: Resists corrosive substances in plastic raw materials, reducing the risk of mold rusting and lowering maintenance costs.
4. Superior Machinability
Excellent cutting performance: Low cutting resistance in the pre-hardened state minimizes tool wear and improves machining efficiency.
Outstanding weldability: The hardness of welded areas matches that of the base material after aging treatment, preventing weld softening or cracking.
Superior electrical discharge machining (EDM) performance: The hardness of the EDM-processed surface does not increase, resulting in a dense and aesthetically pleasing finish that can replace traditional peen-pattern etching processes.
