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Description

UK B.S. BS HR 402 (1973), BS 2HR 402 (2011), HR402 Specialsteel Specification for nickel-chromium-cobalt-titanium-aluminium heat-resisting alloy seamless tubes (Nickel base, Cr 19.5, Co 18.0, Ti 2.5, Al 1.5) and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: HR402
Category Class Grade Standard Country Application
Steel GradesSpecialsteel HR402 B.S. UK Specification for nickel-chromium-cobalt-titanium-aluminium heat-resisting alloy seamless tubes (Nickel base, Cr 19.5, Co 18.0, Ti 2.5, Al 1.5)

Chemical composition(mass fraction)(wt.%) of the HR402

C Si Mn P S Cr Ni Mo Co Ti Fe Al Cu Zr B Bi Pb Ag
≤0.13 ≤1.00 ≤1.00 ≤ ≥ ≤0.015 18.00 -21.00 ≤remaining ≤ ≥ 15.00 -21.00 2.00 -3.00 ≤1.50 1.00 -2.00 ≤0.20 ≤0.15 ≤0.02 ≤0.0001 ≤0.002 ≤0.0005

Mechanical Properties of steel grade HR402

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)
534 (≥) 196 (≥) 33 14 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 113

Physical Properties of steel grade HR402

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
14 - -     0.32 -  
714 358 - 14.3 313   -  
783 - 42 41.2   241 244

Heat Treatment of steel grade HR402

Heat treated : 1618°C - 1564°C

Technological Curves of steel grade HR402

Relevant standard of HR402

BS HR 402 (1973) Specification for nickel-chromium-cobalt-titanium-aluminium heat-resisting alloy cold worked and softened seamless tubes (nickel base, Cr 19.5, Co 18.0, Ti 2.5, Al 1.5) BS-HR-402-(1973).pdf
BS 2HR 402 (2011) Specification for nickel-chromium-cobalt-titanium-aluminium heat-resisting alloy seamless tubes (Nickel base, Cr 19.5, Co 18.0, Ti 2.5, Al 1.5) BS-2HR-402-(2011).pdf

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