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Bulgaria BDS U9 碳工具鋼鋼料 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: U9 / U 9
Category Grade Standard Region/Area Standard Content
Metals U 9 BDS 6751 Bulgaria 碳工具鋼鋼料

Chemical composition(mass fraction)(wt.%) of the U 9

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0300 -
P - 0.0300 -
Ni - 0.2500 -
Mn 0.1500 0.3500 -
Cu - 0.2500 -
Cr - 0.2000 -
C 0.8500 0.9400 -

Mechanical Properties of steel grade U 9

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)
318 (≥) 236 (≥) 41 11 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical Properties of steel grade U 9

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
43 - -     0.12 -  
548 733 - 24.3 243   -  
987 - 24 33.2   213 424

Heat Treatment of steel grade U 9

Heat treated : 1111°C - 1553°C

Technological Curves of steel grade U 9

Cross Reference Table (Equivalent Grade) of U 9

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