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HR55 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of HR55

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B.S. HR55

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This page is mainly introduced the HR55 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of HR55,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Specification for nickel-iron-chromium-molybdenum-aluminium-titanium heat-resisting alloy billets, bars, forgings and parts (Ni/Co 43.5, Cr 16.5, Mo 3.3, Al 1.2, Ti 1.2, Fe remainder)

Steel Garde:HR55
Type:Stainless Steels
Country:UK
Standard:B.S.

Standard Number:

ITEM	Standard Number	Descriptions
1	BS 2HR 55 (2010)	Specification for nickel-iron-chromium-molybdenum-aluminium-titanium heat-resisting alloy billets, bars, forgings and parts (Ni/Co 43.5, Cr 16.5, Mo 3.3, Al 1.2, Ti 1.2, Fe remainder)
2	BS HR 55	Specification for nickel-iron-chromium-molybdenum-aluminium-titanium heat-resisting alloy billets, bars, forgings and parts (Ni/Co 43.5, Cr 16.5, Mo 3.3, Al 1.2, Ti 1.2, Fe remainder)

Application:Specification for nickel-iron-chromium-molybdenum-aluminium-titanium heat-resisting alloy billets, bars, forgings and parts (Ni/Co 43.5, Cr 16.5, Mo 3.3, Al 1.2, Ti 1.2, Fe remainder)

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.04	0.08
Si		0.50
Mn		0.20
P
S		0.015
Cr	15.50	17.50
Ni	42.00	45.00
Mo	2.80	3.80
Co		2.00
Ti	1.10	1.30
Fe		remaining
Al	1.10	1.30
Cu		0.50
B		0.005
Pb		0.0015
Bi		0.0001
Ag		0.0005
Zr	0.01	0.04

Mechanical Properties

Tensile strength	500～773	σb/MPa
Yield Strength	699	σ 0.2 ≥/MPa
Elongation	11	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	508～073	-
HRC	30	-

Physical Properties

Thermal expansion	42-84	e-6/K
Thermal conductivity	76-53	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	1344-2515	째C
Density	1813-6163	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)
HR55 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