UK B.S. BS HR 204 (1972), BS 2HR 204 (2009), HR204 Specialsteel Specification for nickel-chromium-iron-molybdenum-cobalt-tungsten heat-resisting alloy plate, sheet and strip (nickel base, Cr 21.7, Fe 18.5, Mo 9, Co 1.5, W 0.6) and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Standard | Country | Application |
---|---|---|---|---|---|
Steel Grades | Specialsteel | HR204 | B.S. | UK | Specification for nickel-chromium-iron-molybdenum-cobalt-tungsten heat-resisting alloy plate, sheet and strip (nickel base, Cr 21.7, Fe 18.5, Mo 9, Co 1.5, W 0.6) |
C | Si | Mn | P | S | Cr | Ni | Mo | Co | Ti | Fe | W | B | Pb |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0.05 -0.15 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.015 | 20.50 -23.00 | ≤remaining | 8.00 -10.00 | 0.50 -2.50 | ≤ ≥ | 17.00 -20.00 | 0.20 -1.00 | ≤0.0100 | ≤0.005 |
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) |
---|---|---|---|---|---|---|
954 (≥) | 527 (≥) | 42 | 31 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 211 |
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 | - | - | 0.24 | - | |||
838 | 925 | - | 22.3 | 312 | - | ||
132 | - | 31 | 11.2 | 122 | 433 |
Heat treated : 1661°C - 1364°C
BS HR 204 (1972) | Specification for nickel-chromium-iron-molybdenum-cobalt-tungsten heat-resisting alloy plate, sheet and strip (nickel base Cr 22, Fe 18.5, Mo 9, Co 1.5, W 0.6) | BS-HR-204-(1972).pdf |
BS 2HR 204 (2009) | Specification for nickel-chromium-iron-molybdenum-cobalt-tungsten heat-resisting alloy plate, sheet and strip (nickel base, Cr 21.7, Fe 18.5, Mo 9, Co 1.5, W 0.6) | BS-2HR-204-(2009).pdf |
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