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France AFNOR NF P690Q 压力平板钢产品-第6部分:可焊接细晶钢,淬火和回火 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: P690Q / P 690 Q
Category Grade Standard Region/Area Standard Content
Metals P 690 Q NF EN 10028-6 France 压力平板钢产品-第6部分:可焊接细晶钢,淬火和回火

Chemical composition(mass fraction)(wt.%) of the P 690 Q

Element Min Max Similar
V - 0.1200 -
Ti - 0.0500 -
Si - 0.8000 -
S - 0.0150 -
P - 0.0250 -
Ni - 2.5000 -
Nb - 0.0600 -
N - 0.0150 -
Mo - 0.7000 -
Mn 1.2000 1.7000 -
Cu - 0.3000 -
Cr - 1.5000 -
C - 0.2000 -
Al 0.0200 - -

Mechanical Properties of steel grade P 690 Q

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)
228 (≥) 285 (≥) 34 34 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical Properties of steel grade P 690 Q

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
32 - -     0.33 -  
373 827 - 31.3 134   -  
635 - 12 44.2   243 142

Heat Treatment of steel grade P 690 Q

Heat treated : 1925°C - 1683°C

Technological Curves of steel grade P 690 Q

Cross Reference Table (Equivalent Grade) of P 690 Q

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