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Description

UK B.S. BS 6323-8, LW19 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: LW19
Category Class Grade Standard Country Application
Steel GradesSpecialsteel LW19 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 LW19

C Si Mn P S Cr Ni Mo Ti
≤0.08 ≤1.00 ≤1.00 ≤0.040 ≤0.030 10.50 -12.00 ≤1.00 ≤ ≥ ≤1.00

Mechanical Properties of steel grade LW19

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)
321 (≥) 631 (≥) 12 31 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade LW19

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
33 - -     0.24 -  
578 673 - 12.3 332   -  
869 - 33 23.2   222 412

Heat Treatment of steel grade LW19

Heat treated : 1998°C - 1336°C

Technological Curves of steel grade LW19

Cross Reference Table (Equivalent Grade) of LW19

Grade Standard Country Application
409S19
409S19

Relevant standard of LW19

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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