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70Si7

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X45NiCrMo4 0.2823
#70Si7

Description

Germany DIN 70Si7 Cold working alloy tool steel and 70Si7 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: 70Si7
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy 70Si7 DIN Germany Cold working alloy tool steel
1.2745
15NiCr18
1.2746
45NiCrMoV16-6
1.2762
75CrMoNiW6-7
1.2764
X19NiCrMo4
1.2767
X45NiCrMo4

Chemical composition(mass fraction)(wt.%) of the 70Si7

C(％) Si(％) Mn(％) P(％) S(％)
0.65-0.75 1.50-1.80 0.60-0.80 Max 0.030 Max 0.030

Mechanical Properties of steel grade 70Si7

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)
989 (≥) 211 (≥) 23 11 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical Properties of steel grade 70Si7

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
44 - -     0.43 -  
375 436 - 23.3 232   -  
961 - 34 31.2   334 312

Heat Treatment of steel grade 70Si7

Heat treated : 1258°C - 1868°C

Technological Curves of steel grade 70Si7

Cross Reference Table (Equivalent Grade) of 70Si7

Grade Standard Country Application
70Si7 DIN Germany Cold working alloy tool steel
X45NiCrMo4 0.2823
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