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Description

UK B.S. BS HR 6 (1972), BS 2HR 6 (2010), HR6 Specialsteel Specification for nickel-chromium- iron-molybdenum-cobalt-tungsten heat-resisting alloy billets, bars, forgings and parts (nickel base, Cr 21.7, Fe 18.5, Mo 9, Co 1.5, W 0.6) and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: HR6
Category Class Grade Standard Country Application
Steel GradesSpecialsteel HR6 B.S. UK Specification for nickel-chromium- iron-molybdenum-cobalt-tungsten heat-resisting alloy billets, bars, forgings and parts (nickel base, Cr 21.7, Fe 18.5, Mo 9, Co 1.5, W 0.6)

Chemical composition(mass fraction)(wt.%) of the HR6

C Si Mn P S Cr Ni Mo Co Ti Fe B W Pb
0.05 -0.15 ≤1.00 ≤1.00 ≤0.015 ≤0.015 20.50 -23.00 ≤remaining 8.00 -10.00 0.50 -2.50 ≤ ≥ 17.00 -20.00 ≤0.010 0.20 -1.00 ≤0.0050

Mechanical Properties of steel grade HR6

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)
887 (≥) 992 (≥) 14 14 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade HR6

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
31 - -     0.43 -  
247 377 - 12.3 321   -  
175 - 24 34.2   143 244

Heat Treatment of steel grade HR6

Heat treated : 1898°C - 1263°C

Technological Curves of steel grade HR6

Relevant standard of HR6

BS HR 6 (1972) Specification for nickel-chromium-iron-molybdenum-cobalt-tungsten heat-resisting alloy billets, bars, forgings and parts (nickel base, Cr 21.7, Fe 18.5, Mo 9, Co 1.5, W 0.6) BS-HR-6-(1972).pdf
BS 2HR 6 (2010) Specification for nickel-chromium- iron-molybdenum-cobalt-tungsten heat-resisting alloy billets, bars, forgings and parts (nickel base, Cr 21.7, Fe 18.5, Mo 9, Co 1.5, W 0.6) BS-2HR-6-(2010).pdf

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