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EU EN OⅢ 焊材 - 非合金钢和抗蠕变钢的气体保护焊棒 - 分类 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: OⅢ / O Ⅲ
Category Grade Standard Region/Area Standard Content
Metals O Ⅲ EN 12536 EU 焊材 - 非合金钢和抗蠕变钢的气体保护焊棒 - 分类

Chemical composition(mass fraction)(wt.%) of the O Ⅲ

Element Min Max Similar
V - 0.0300 -
Si 0.0500 0.2500 -
S - 0.0200 -
P - 0.0200 -
Ni 0.3500 0.8000 -
Mo - 0.3000 -
Mn 0.9500 1.2500 -
Cu - 0.3500 -
Cr - 0.1500 -
C 0.0500 0.1500 -

Mechanical Properties of steel grade O Ⅲ

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)
825 (≥) 997 (≥) 13 32 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical Properties of steel grade O Ⅲ

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 - -     0.41 -  
859 749 - 31.3 413   -  
919 - 33 21.2   321 312

Heat Treatment of steel grade O Ⅲ

Heat treated : 1599°C - 1828°C

Technological Curves of steel grade O Ⅲ

Cross Reference Table (Equivalent Grade) of O Ⅲ

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