NAK80 Steel

NAK80 Steel is a premium pre-hardened plastic mold steel engineered for molds that require excellent mirror finishing, high toughness, and stable machining performance.

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Product Introduction

NAK80 Mirror-Polishing Plastic Mold Steel – High Surface Quality & Excellent Machinability

NAK80 Steel is a premium pre-hardened plastic mold steel engineered for molds that require excellent mirror finishing, high toughness, and stable machining performance.
Supplied in a pre-hardened condition with a hardness of HRC 38–42, NAK80 ensures dimensional stability and eliminates heat treatment deformation, making it ideal for appearance-critical and high-gloss injection molds.

Product Parameters (Specification)

Property	Description
Material Type	Pre-hardened mirror-polishing plastic mold steel
Hardness	HRC 38–42
Microstructure	Fine, uniform tempered martensite
Surface Condition	Excellent mirror polishability & EDM performance
Heat Treatment	Pre-hardened; no quenching required
Application	High-gloss plastic parts, precision molds, cosmetic packaging molds

Product Features & Applications

HRC 38–42 Stable Hardness

Provides strong machinability, reliable toughness, and consistent dimensional accuracy.

Outstanding Mirror Polishing Ability

Achieves optical-grade surface finishes, ideal for clear and glossy plastic products.

Excellent Machinability & EDM Response

Ensures smooth cutting, reduced tool wear, and clean EDM surfaces with minimal white layer.

High Toughness & Crack Resistance

Performs well in molds with deep cavities or sharp structural transitions.

Perfect for Appearance-critical Applications

Widely used for cosmetic packaging, automotive interior parts, electronic housings, lenses, and appliance shells.

Product Details

NAK80 Steel is manufactured through advanced refining processes to ensure low impurity levels and a highly uniform internal structure.
Its pre-hardened nature eliminates heat treatment after rough machining, avoiding distortion and reducing processing time.

Thanks to its superb polishing performance and stable mechanical behavior, NAK80 is a preferred choice for molds requiring high-gloss surfaces, detailed textures, and precise contours.