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55NiCrMoV7

Description

55NiCrMoV7 Tool Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel: 55NiCrMoV7
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel 55NiCrMoV7
SKD 61
X40CrMoV5-1
SKD 62
X35CrWMoV5
SKD 7
32CrMoV3-3
SKD 8
X38CrCoWV4-4-4
SKT 3
SKT 4

Chemical composition(mass fraction)(wt.%) of the 55NiCrMoV7

 

C
Si
Mn
P
S
Cr Ni
 0.5-0.6 0.1-0.4  0.6-0.9  0.03  0.02  0.8-1.2  1.5-1.8
Mo Al Cu Nb Ti V Ce
0.35-0.55     0.25     0.05-0.15   
N Co Pb B Other    
             
             

Mechanical Properties of steel grade 55NiCrMoV7

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
573 (≥) 136 (≥) 41 31 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 214

Physical Properties of steel grade 55NiCrMoV7

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
41 - -     0.11 -  
549 759 - 22.3 414   -  
293 - 21 23.2   122 432

Heat Treatment of steel grade 55NiCrMoV7

Heat treated : 1878°C - 1233°C

Technological Curves of steel grade 55NiCrMoV7

Cross Reference Table (Equivalent Grade) of 55NiCrMoV7

Grade Standard Country Application
55NiCrMoV7 AFNOR France Carbide for cutting tools
55NiCrMoV7 AFNOR France Carbide for cutting tools
32CrMoV12-28 Carbide for cutting tools
32CrMoV12-28 Carbide for cutting tools
HS4-1 Carbide for cutting tools
HS4-1 Carbide for cutting tools
55NiCrMoV7 Spain structural alloy steel
55NiCrMoV7 Spain structural alloy steel
EN 55NiCrMoV7 EN Euronorm Tool steel

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