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America ASME 1.7218 Specification for Seamless Steel Tubes for Pressure Purposes Part 2: Technical Delivery Conditions for Non-Alloy and Alloy Steel Tubes With Specified Elevated Temperature Properties and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 1.7218 / 1.7218
Category Grade Standard Region/Area Standard Content
Metals 1.7218 ASME SA/EN 10216-2 America Specification for Seamless Steel Tubes for Pressure Purposes Part 2: Technical Delivery Conditions for Non-Alloy and Alloy Steel Tubes With Specified Elevated Temperature Properties

Chemical composition(mass fraction)(wt.%) of the 1.7218

Element Min Max Similar
C 0.2200 0.2900 -
Mn 0.6000 0.9000 -
P - 0.0250 -
S - 0.0100 -
Si - 0.4000 -
Ni - 0.3000 -
Cr 0.9000 1.2000 -
Mo 0.1500 0.3000 -
Cu - 0.3000 -
Al - 0.0400 -

Mechanical Properties of steel grade 1.7218

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 (≥) 272 (≥) 42 13 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 334

Physical Properties of steel grade 1.7218

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 - -     0.21 -  
929 935 - 42.3 122   -  
524 - 22 14.2   312 223

Heat Treatment of steel grade 1.7218

Heat treated : 1699°C - 1229°C

Technological Curves of steel grade 1.7218

Cross Reference Table (Equivalent Grade) of 1.7218

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