ASSAB Steel - Steel Chart
ASSAB Plastic Mould Steel
Material Grade Hardness Characteristics Applications
IMPAX 718H Prehardened to HB330 - 380 Homogenous microstructure, stable quality, good texturing and EDM property Plastic injection mould for medium production run and PS, PE, PP, ABS and other non-corrosive resins
NIMAX Prehardened to HB360 - 400 Good polishing and texturing properties. Superior EDM-ability and machinability. High toughness and good weldability Plastic injection mould for various applications such as LCD TV panels, interior part for automobile, engineering components and those resins without corrosive property
S136(STAVAX ESR) Annealed to HB200 High purity with fine microstructure, can be polished to mirror finish. Excellent corrosion resistance and low deformation during heat treatment Plastic injection mould with small to medium size, long production run and high polishing requirement, e.g. PMMA, PC, resins such as PVC, PA, POM or additives with corrosive property, machine part for food processing machinery
S136H
(STAVAX ESR
(PRE-HARDENED)
Prehardened to HB290 - 330 Plastic injection mould with small to medium size, medium production run and high polishing requirement, e.g. PMMA, PC, resins such as PVC, PA, POM or additives with corrosive property, machine part for food processing machinery
S136 SUP
(MIRRAX ESR)
Annealed to HB250(max) Improved version of S136 with better corrosion resistance and toughness Large size and complicated structure plastic mould for PMMA, PC, PVC, PA, POM plastics and machine part for food processing machinery
S136H SUP
(MIRRAX ESR
(PRE-HARDENED)
Prehardened to HB290 - 330 Improved version of S136H with better corrosion resistance and toughness
POLMAX Annealed to HB200 Ultra-high purity and extremely low segregation by double remelting process(ESR+VAR). Superb polishability to attain optical standard. Good corrosion resistance and low deformation during heat treatment High quality moulds for Lens, optical products, compact discs and medical applications
ROYALLOY Prehardened to HB290 - 330 Superior machinability, good corrosion resistance, uniform and consistent hardness in every dimension, excellent weldability Mould base of plastic mould with requirement of long run, corrosion resistance and high precision; also suitable for plastic and rubber moulds, machine part with low requirement on polishability and texturing

ASSAB Hot Work Steel

Material Grade Hardness Characteristics Applications
DIEVAR 8418 Annealed to HB160 High purity, good high-temperature strength, outstanding temperature resistance and excellent resistance to heat checking, excellent hardenability, good dimensional stability during hardening High demand light-alloy die casting die, hot forging inserts, extrusion dies with long production run
ORVAR 8407 Annealed to HB185 High purity, high toughness and good resistance to thermal fatigue Die casting die, extrusion die, through-hardened plastic mould for PA, POM,PS, PE, EP and other non-corrosive plastics

ASSAB Cold Work Steel

Material Grade Hardness Characteristics Applications
CALMAX 635 Annealed to HB200 Combining with high toughness and high wear resistance; good hardenability and can be flame hardening to HRC56-60 with harden layer up to 5mm thick Heavy duty blanking, forming tool or coining tool which required good adhesive wear resistance; also suitable for moulding fibre-reinforce plastics