5CrNiMnMoVSCa belongs to high-toughness precision plastic mold steel with free cutting.5CrNiMnMoVSCa steel has small heat treatment deformation and good toughness under high hardness (above 50HRC). And has good ability to prevent crack propagation.


Chemical Composition


5CrNiMnMoVSCa Mechanical Properties

312 (≥)137 (≥)3332
Reduction in cross section on fractureAs-Heat-Treated ConditionBrinell hardness (HBW) 
13Solution and Aging, Annealing, Ausaging, Q+T,etc314 

Physical Properties

TemperatureModulus of elasticityMean coefficient of thermal expansion 10-6/(°C) between 20(°C) andThermal conductivitySpecific thermal capacitySpecific electrical resistivityDensityPoisson’s coefficient, ν
14  0.43 
8313323.2  213422

Heat treatment

Thermal processing
Heating temperature 1100℃. Initial forging temperature 1070~1100℃. Final forging temperature 850℃. Sand cooling after forging.

Spheroidizing Annealing
Heating temperature 770℃, holding for 3h. Isothermal temperature 660℃, holding for 7h. Furnace cooling to 550℃, air cooling. Annealed hardness ≤ 241HBS, good processing performance.

Quenching temperature 880~900℃. Take the lower limit for small pieces and the upper limit for large pieces. Oil cooling or 260℃ nitrate grade quenching.

 5CrNiMnMoVSCa Steel Application

1. 5CrNiMnMoVSCa steel can be used as injection mold, compression mold, rubber mold, printed board punching mold with complex cavity and high cavity quality requirements. The effect is remarkable. It can improve the life of the mold by 3-4 times.

2. For the manufacture of printed circuit board die.

3. It is used for large, medium and small high-precision molds. Such as tape recorders, washing machines and other plastic molds.

5CrNiMnMoVSCa steel 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