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P255

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EU EN P255 压力焊接钢管-交货技术条件-第4部分：具有特殊低温性能的电焊非合金钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: P255 / P255
Category Grade Standard Region/Area Standard Content
Metals P255 EN 10217-4 EU 压力焊接钢管-交货技术条件-第4部分：具有特殊低温性能的电焊非合金钢

Chemical composition(mass fraction)(wt.%) of the P255

Element Min Max Similar
Cu - 0.3000 -
Al 0.0200 - -
Mo - 0.0800 -
Ni - 0.3000 -
Cr - 0.3000 -
P - 0.0300 -
S - 0.0250 -
Mn 0.4000 1.2000 -
Si - 0.3500 -
C - 0.1700 -

Mechanical Properties of steel grade P255

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)
348 (≥) 723 (≥) 22 31 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical Properties of steel grade P255

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
11 - -     0.33 -  
466 829 - 24.3 211   -  
642 - 24 22.2   321 333

Heat Treatment of steel grade P255

Heat treated : 1158°C - 1573°C

Technological Curves of steel grade P255

Cross Reference Table (Equivalent Grade) of P255

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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