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Description

UK B.S. BS 6323-8, LW22 Specialsteel Specification for seamless and welded steel tubes for automobile , mechanical and general engineering purposes. Specific requirements for longitudinally welded stainless steel tubes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: LW22
Category Class Grade Standard Country Application
Steel GradesSpecialsteel LW22 B.S. UK Specification for seamless and welded steel tubes for automobile , mechanical and general engineering purposes. Specific requirements for longitudinally welded stainless steel tubes

Chemical composition(mass fraction)(wt.%) of the LW22

C Si Mn P S Cr Ni Mo
≤0.03 ≤1.00 ≤2.00 ≤0.045 ≤0.030 16.50 -18.50 11.50 -14.50 2.50 -3.00

Mechanical Properties of steel grade LW22

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)
242 (≥) 967 (≥) 21 31 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 111

Physical Properties of steel grade LW22

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
42 - -     0.12 -  
813 711 - 31.3 241   -  
932 - 23 31.2   333 444

Heat Treatment of steel grade LW22

Heat treated : 1791°C - 1344°C

Technological Curves of steel grade LW22

Cross Reference Table (Equivalent Grade) of LW22

Grade Standard Country Application
316S13
316S13

Relevant standard of LW22

BS 6323-8 Specification for seamless and welded steel tubes for automobile , mechanical and general engineering purposes. Specific requirements for longitudinally welded stainless steel tubes BS-6323-8.pdf

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