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HR40 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of HR40

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B.S. HR40

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This page is mainly introduced the HR40 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of HR40,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Specification for cobalt-chromium-tungsten-nickel-manganese heat-resisting alloy billets, bars and forgings (cobalt base Cr 20, W 15, Ni 10, Mn 1.5)

Steel Garde:HR40
Type:Stainless Steels
Country:UK
Standard:B.S.

Standard Number:

ITEM	Standard Number	Descriptions
1	BS HR 40 (1972)	Specification for cobalt-chromium-tungsten-nickel-manganese heat-resisting alloy billets, bars and forgings (cobalt base, Cr 20, W 15, Ni 10, Mn 1.5)
2	BS 2HR 40 (2010)	Specification for cobalt-chromium-tungsten-nickel-manganese heat-resisting alloy billets, bars and forgings (cobalt base Cr 20, W 15, Ni 10, Mn 1.5)

Application:Specification for cobalt-chromium-tungsten-nickel-manganese heat-resisting alloy billets, bars and forgings (cobalt base Cr 20, W 15, Ni 10, Mn 1.5)

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
2HR401	B.S.	UK
HR402	B.S.	UK
HR403	B.S.	UK
HR404	B.S.	UK

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.05	0.15
Si		0.40
Mn	1.00	2.00
P		0.040
S		0.030
Cr	19.00	21.00
Ni	9.00	11.00
Mo
Co		remaining
Ti
Fe		3.00
W	14.00	16.00

Mechanical Properties

Tensile strength	689～917	σb/MPa
Yield Strength	746	σ 0.2 ≥/MPa
Elongation	36	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	795～748	-
HRC	30	-

Physical Properties

Thermal expansion	33-48	e-6/K
Thermal conductivity	99-95	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	2043-4917	째C
Density	2015-2854	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)
HR40 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