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304S71 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 304S71

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B.S. 304S71

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This page is mainly introduced the 304S71 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 304S71,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications

Steel Garde:304S71
Type:Stainless Steels
Country:UK
Standard:B.S.

Standard Number:

ITEM	Standard Number	Descriptions
1	BS 1502	Specification for steels for fired and unfired pressure vessels: sections and bars
2	BS 1506	Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications

Application:Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.07
Si		1.00
Mn		2.00
P		0.045
S		0.030
Cr	17.00	19.00
Mo
Ni	8.00	11.00
N	0.12	0.22

Mechanical Properties

Tensile strength	483～295	σb/MPa
Yield Strength	186	σ 0.2 ≥/MPa
Elongation	23	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	874～869	-
HRC	30	-

Physical Properties

Thermal expansion	62-38	e-6/K
Thermal conductivity	19-19	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	2650-0184	째C
Density	2000-7259	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)
304S71 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