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B.S. HR6 Details

B.S. HR6 Standard Download

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HR6 Application: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)

Category Type Grade Designations
Grades Stainless Steels HR6 UK - B.S. , 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 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)

Chemical composition(wt.%) of HR6 grade: BS HR 6 (1972)

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

Mechanical properties of grade HR6 BS HR 6 (1972)

Proof strength
Rp0.2 (MPa)		 Tensile strength
Rm (MPa)		 Impact energy
KV (J)		 Elongation at fracture
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
189 (≥) 248 (≥) 23 23 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 131

Physical properties of grade HR6 BS HR 6 (1972)

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm		 Modulus of elasticity
kN/mm2		 Expansion rate
148 (≥) 323 (≥) 11 44 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 222
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
127 649 616

HR6 - Form of Supply

Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
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)

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