7CrSiMnMoV belongs to the series of high carbon low alloy cold work tool steel. The typical elements are Cr, Si, Mn. A little amount of strengthening elements, like Mo and V are also included.

7CrSiMnMoV is a new type of cold work tool mold steel. It has good hardenability and can be hardened by Air cooling. Its hardness can reach HRC62~64. The quenching deformation is small. The steel has high strength and excellent toughness.

7CrSiMnMoV Steel

Equivalent Grade


Chemical composition:


7CrSiMnMoV Mechanical Properties

YieldRp0.2 (MPa)752 (≥)
TensileRm (MPa)985 (≥)
ImpactKV/Ku (J)43
ElongationA (%)42
Reduction in cross-section on fractureZ (%)22
As-Heat-Treated Condition_Solution and Aging, Annealing, Ausaging, Q+T,etc
Brinell hardness (HBW)242

Physical Properties

Modulus of elasticity(GPa)815
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and11
Thermal conductivity(W/m·°C)_23.312.2
Specific thermal capacity(J/kg·°C)_314
Specific electrical resistivity(Ω mm²/m)0.31__
Poisson’s coefficient, ν___144

Heat Treatment Specification

  • Annealing: 860 to 840℃, slow cooling in furnace 3 to 4 hrs, down to approx. 550℃, cooling in air. Hardness after annealing: max. 241HB.
  • Hardening: flame hardening
ItemPreheating ℃Heating temperature ℃Cooling methodHardness
Quenching180~200 ℃, 2H900~1000Air cooling62~64HRC
Tempering180~200Air cooling58~62HRC
ItemHeating temperature/℃Initial forging temperature/℃Final forging temperature/℃Cooling
Ingot12001100~1150800~850Slow cooling

Prpoducts Range and Delivery Status

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-WASHE


  • Assembled mold for large vehicles
  • Sheet punching mold, sizing mold, trimming mold, cold extrusion mold
  • Replace T10A, 9Mn2V and Cr12MoV to manufacture cold work dies requiring high toughness.