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X 7 CrMo 9 1

Germany DIN X7CrMo91 Round Wire Rod for Welding Filler Metals; Technical Conditions of Delivery and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: X7CrMo91 / X 7 CrMo 9 1
Category Grade Standard Region/Area Standard Content
Metals X 7 CrMo 9 1 DIN 17145 Germany Round Wire Rod for Welding Filler Metals; Technical Conditions of Delivery

Chemical composition(mass fraction)(wt.%) of the X 7 CrMo 9 1

Element Min Max Similar
Si 0.4000 0.8000 -
S - 0.0200 -
P - 0.0200 -
Mo 0.8500 1.1500 -
Mn 0.4000 0.7500 -
Cr 8.5000 10.0000 -
C 0.0300 0.1000 -

Mechanical Properties of steel grade X 7 CrMo 9 1

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)
558 (≥) 233 (≥) 22 14 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical Properties of steel grade X 7 CrMo 9 1

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 - -     0.21 -  
689 419 - 42.3 114   -  
831 - 21 34.2   241 332

Heat Treatment of steel grade X 7 CrMo 9 1

Heat treated : 1768°C - 1766°C

Technological Curves of steel grade X 7 CrMo 9 1

Cross Reference Table (Equivalent Grade) of X 7 CrMo 9 1

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