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International ISO TW69 Steel products for pressure purposes - Quality requirements - Part 5: Longitudinally welded austenitic stainless steel tubes and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: TW69 / TW 69
Category Grade Standard Region/Area Standard Content
Metals TW 69 ISO 2604-5 International Steel products for pressure purposes - Quality requirements - Part 5: Longitudinally welded austenitic stainless steel tubes

Chemical composition(mass fraction)(wt.%) of the TW 69

Element Min Max Similar

Mechanical Properties of steel grade TW 69

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)
223 (≥) 441 (≥) 24 42 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 342

Physical Properties of steel grade TW 69

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 - -     0.11 -  
122 861 - 12.3 114   -  
236 - 31 23.2   123 234

Heat Treatment of steel grade TW 69

Heat treated : 1235°C - 1192°C

Technological Curves of steel grade TW 69

Cross Reference Table (Equivalent Grade) of TW 69

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