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HR204 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of HR204

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B.S. HR204

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This page is mainly introduced the HR204 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of HR204,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
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)

Steel Garde:HR204
Type:Stainless Steels
Country:UK
Standard:B.S.

Standard Number:

ITEM	Standard Number	Descriptions
1	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)
2	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)

Application: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)

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.05	0.15
Si		1.00
Mn		1.00
P		0.040
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
W	0.20	1.00
B		0.0100
Pb		0.005

Mechanical Properties

Tensile strength	329～582	σb/MPa
Yield Strength	127	σ 0.2 ≥/MPa
Elongation	26	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	411～811	-
HRC	30	-

Physical Properties

Thermal expansion	88-77	e-6/K
Thermal conductivity	67-02	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	5843-2007	째C
Density	7254-6330	kg/m³
Resistivity	0.50-0.60	Ohm.mm²/m

Heat Treatment Regime

Annealing	Quenching	Tempering	Normalizing	Q & T
√	√	√	√	√

Size Availability

Steel Grade	Specification	Processing range(mm)
HR204 Stainless Steels	Round Bar and Hollow Bar	Φ1 to Φ2000
	Square and Flat Steel	Φ10 to Φ100
	Plate and Sheet	0.08-800(Thickness)10-1500(Width)Length
	Tube or Pipe	OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
	Coil and Strip Steel	THK:0.1mm Width:1500mm
	Forged	Ring/Cylindrical/Disk