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S.161 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of S.161

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B.S. S.161

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This page is mainly introduced the S.161 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of S.161,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Specification for chromium-nickel-molybdenum corrosion-resisting steel. Bright bars and parts (540 MPa, limiting ruling section 160 mm) (Cr 17.5, Ni 12.5, Mo 2.25, controlled nitrogen content)

Steel Garde:S.161
Type:Stainless Steels
Country:UK
Standard:B.S.

Standard Number:

ITEM	Standard Number	Descriptions
1	BS S 161	Specification for chromium-nickel-molybdenum corrosion-resisting steel. Bright bars and parts (540 MPa, limiting ruling section 160 mm) (Cr 17.5, Ni 12.5, Mo 2.25, controlled nitrogen content)

Application:Specification for chromium-nickel-molybdenum corrosion-resisting steel. Bright bars and parts (540 MPa, limiting ruling section 160 mm) (Cr 17.5, Ni 12.5, Mo 2.25, controlled nitrogen content)

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.03
Si		1.00
Mn		2.00
P		0.040
S		0.030
Cr	16.50	18.50
Ni	11.00	14.00
Mo	2.00	3.00
Nb/Ti
N		0.10

Mechanical Properties

Tensile strength	978～919	σb/MPa
Yield Strength	206	σ 0.2 ≥/MPa
Elongation	44	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	532～618	-
HRC	30	-

Physical Properties

Thermal expansion	85-38	e-6/K
Thermal conductivity	09-82	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8782-2587	째C
Density	6492-5793	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)
S.161 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