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Description

UK B.S. BS 2T 68, 2T.68 Specialsteel Specification for cold drawn 18/10 chromium-nickel corrosion-resisting steel tube (niobium stabilized: 800 MPa) (weldable) and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 2T.68
Category Class Grade Standard Country Application
Steel GradesSpecialsteel 2T.68 B.S. UK Specification for cold drawn 18/10 chromium-nickel corrosion-resisting steel tube (niobium stabilized: 800 MPa) (weldable)

Chemical composition(mass fraction)(wt.%) of the 2T.68

C Si Mn P S Cr Ni Mo Nb
≤0.08 0.20 -1.00 0.50 -2.00 ≤0.035 ≤0.025 17.00 -19.00 9.00 -12.00 ≤ ≥ 10×C -1.00

Mechanical Properties of steel grade 2T.68

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)
333 (≥) 666 (≥) 32 12 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade 2T.68

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 - -     0.41 -  
816 499 - 24.3 431   -  
519 - 11 22.2   243 134

Heat Treatment of steel grade 2T.68

Heat treated : 1812°C - 1236°C

Technological Curves of steel grade 2T.68

Relevant standard of 2T.68

BS 2T 68 Specification for cold drawn 18/10 chromium-nickel corrosion-resisting steel tube (niobium stabilized: 800 MPa) (weldable) BS-2T-68.pdf

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