CrWMn is the most commonly used high carbon alloy tool steel for making molds. CrWMn steel has high hardenability. Since tungsten forms carbides, this steel has more excess carbides and higher hardness and wear resistance than chromium steel and 9SiCr steel after quenching and low-temperature tempering.


CrWMn Worldwide equivalents

country / regionChinaUSAGermanyJapanCzechia
GradeCrWMnO7105WCr6SKS31/SKS2  SKS31/SKS2

CrWMn Steel Chemical Composition


Mechanical Properties

Rp0.2 (MPa)Rm (MPa)ImpactKV (J)Elongation A (%)A Z (%)DeliveryHardness HB
792 (≥)735 (≥)311233Solution & Aging, Ann, Ausaging, Q+T212

Physical Properties

PropertyDensitykg/dm3Temperature T°C/FSpecific heatJ/kgKElectric resistanceµΩ·cm
371(≥)981(≥)2344Solution and Aging,Annealing,Ausaging,Q+T,etc
Temp.°C/°FCreep strain limit(10000h)(Rp1,0)N/mm2Creep rupture strength(10000h)(Rp1,0)N/mm2Thermal conductivity W/mKModulus of elasticitykN/mm2

Features and Application

CrWMn steel contains tungsten, which helps to preserve fine grains and obtain better toughness. Therefore, the cutting tool made of CrWMn steel has less blade collapse and can better maintain the shape and size of the blade.

CrWMn steel is used to manufacture tools that do not heat the cutting edge violently during work and measuring tools and cutting tools that require no deformation during quenching, such as making knives, filament cones, long reamers, special milling cutters, dies and other types of special tools, as well as tools for cutting soft non-metallic materials.

CrWMn Products

Product typeProductsDimensionProcessesDeliver Status
Plates/SheetsPlates/Sheets0.08-200mm(T)*W*LForging, hot rolling and cold rollingAnnealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel BarRound Bar, Flat Bar, Square BarΦ8-1200mm*LForging, hot rolling and cold rolling, CastBlack, Rough Turning, Shot Blasting,
Coil/StripSteel Coil/Steel Strip0.03-16.0x1200mmCold-Rolled&Hot-RolledAnnealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes/TubesSeamless Pipes/Tubes,Welded Pipes/TubesOD:6-219mm x WT:0.5-20.0mmHot extrusion, Cold Drawn, WeldedAnnealed, Solution and Aging,Q+T, ACID-WASHED

Our Services

1. The price is determined according to the material, size, finishing process and different payment methods

2. Each material has been ut tested

3. We have every kind of material in stock, so we can deliver it in time.

4. The size of steel can be customized according to customer requirements, and the minimum order quantity and specification model can be developed / produced according to international, Chinese or industrial standards