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AH550-NQ-Ⅱ

China 鞍钢Q/ASB AH550-NQ-Ⅱ 焊接用钢盘条 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: AH550-NQ-Ⅱ / AH550-NQ-Ⅱ
Category Grade Standard Region/Area Standard Content
Metals AH550-NQ-Ⅱ Q/ASB 233 China 焊接用钢盘条

Chemical composition(mass fraction)(wt.%) of the AH550-NQ-Ⅱ

Element Min Max Similar
Cu 0.2000 0.4000 -
Ni 0.2000 0.6000 -
Cr 0.3000 0.9000 -
S - 0.0200 -
P - 0.0250 -
Mn 1.2000 1.6000 -
Si - 0.6000 -
C - 0.1000 -

Mechanical Properties of steel grade AH550-NQ-Ⅱ

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)
279 (≥) 216 (≥) 41 23 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 114

Physical Properties of steel grade AH550-NQ-Ⅱ

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
34 - -     0.42 -  
286 891 - 32.3 413   -  
745 - 14 21.2   231 321

Heat Treatment of steel grade AH550-NQ-Ⅱ

Heat treated : 1174°C - 1765°C

Technological Curves of steel grade AH550-NQ-Ⅱ

Cross Reference Table (Equivalent Grade) of AH550-NQ-Ⅱ

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