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EU EN 1.7218 淬火和回火钢 - 第1部分:一般交货技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 1.7218 / 1.7218
Category Grade Standard Region/Area Standard Content
Metals 1.7218 EN 10083-1 EU 淬火和回火钢 - 第1部分:一般交货技术条件

Chemical composition(mass fraction)(wt.%) of the 1.7218

Element Min Max Similar
C 0.2200 0.2900 -
Mn 0.6000 0.9000 -
P - 0.0250 -
S - 0.0100 -
Si - 0.4000 -
Ni - 0.3000 -
Cr 0.9000 1.2000 -
Mo 0.1500 0.3000 -
Cu - 0.3000 -
Al - 0.0400 -
C 0.2200 0.2900 -
Mn 0.6000 0.9000 -
P - 0.0250 -
S - 0.0350 -
Si - 0.4000 -
Cr 0.9000 1.2000 -
Mo 0.1500 0.3000 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0250 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.2200 0.2900 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.2200 0.2900 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0250 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.2200 0.2900 -
Si - 0.3000 -
S - 0.0250 -
P - 0.0250 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cu - 0.2500 -
Cr 0.9000 1.2000 -
C 0.2200 0.2900 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.2200 0.2900 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.2200 0.2900 -

Mechanical Properties of steel grade 1.7218

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)
813 (≥) 979 (≥) 22 22 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 441

Physical Properties of steel grade 1.7218

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
14 - -     0.33 -  
483 291 - 32.3 344   -  
573 - 44 23.2   332 111

Heat Treatment of steel grade 1.7218

Heat treated : 1384°C - 1813°C

Technological Curves of steel grade 1.7218

Cross Reference Table (Equivalent Grade) of 1.7218

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