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LW304 S31

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HFS304 S31 304 S51
#304S31

Description

UK B.S. BS 3605-2, LW304 S31 Specialsteel Austenitic stainless steel pipes and tubes for pressure purposes. Specification for longitudinally welded tubes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: LW304 S31
Category Class Grade Standard Country Application
Steel GradesSpecialsteel LW304 S31 B.S. UK Austenitic stainless steel pipes and tubes for pressure purposes. Specification for longitudinally welded tubes

Chemical composition(mass fraction)(wt.%) of the LW304 S31

C Si Mn P S Cr Mo Ni
≤0.07 ≤1.00 ≤2.00 ≤0.045 ≤0.025 17.00 -19.00 ≤ ≥ 8.00 -11.00

Mechanical Properties of steel grade LW304 S31

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)
978 (≥) 272 (≥) 44 21 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 221

Physical Properties of steel grade LW304 S31

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
43 - -     0.32 -  
262 931 - 33.3 244   -  
425 - 13 21.2   331 444

Heat Treatment of steel grade LW304 S31

Heat treated : 1144°C - 1173°C

Technological Curves of steel grade LW304 S31

Cross Reference Table (Equivalent Grade) of LW304 S31

Grade Standard Country Application
304S31
304S31

Relevant standard of LW304 S31

BS 3605-2 Austenitic stainless steel pipes and tubes for pressure purposes. Specification for longitudinally welded tubes BS-3605-2.pdf
HFS304 S31 304 S51
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