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304S 51 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 304S 51

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B.S. 304S 51

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This page is mainly introduced the 304S 51 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 304S 51,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes

Steel Garde:304S 51
Type:Stainless Steels
Country:UK
Standard:B.S.

Standard Number:

ITEM	Standard Number	Descriptions
1	BS 1501-3	Steels for pressure purposes. Specification for corrosion- and heat-resisting steels: plates, sheet and strip
2	BS 1502	Specification for steels for fired and unfired pressure vessels: sections and bars
3	BS 1503	Specification for steel forgings for pressure purposes
4	BS 1506	Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications
5	BS 3059-2	Steel boiler and superheater tubes. Specification for carbon, alloy and austenitic stainless steel tubes with specified elevated temperature properties
6	BS 3605-1	Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes

Application:Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
304S51	B.S.	UK
HFS 304S51	B.S.	UK
CFS 304S51	B.S.	UK
HFM 304S51	B.S.	UK
304 S51	B.S.	UK
HFS304 S51	B.S.	UK
CFS304 S51	B.S.	UK
HFM304 S51	B.S.	UK

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.04	0.10
Si		1.00
Mn		2.00
P		0.040
S		0.030
Cr	17.00	19.00
Mo
Ni	8.00	11.00

Mechanical Properties

Tensile strength	536～056	σb/MPa
Yield Strength	559	σ 0.2 ≥/MPa
Elongation	98	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	301～636	-
HRC	30	-

Physical Properties

Thermal expansion	69-29	e-6/K
Thermal conductivity	22-30	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	7506-5982	째C
Density	8254-7267	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)
304S 51 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