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321S51 510 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 321S51 510

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B.S. 321S51 510

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This page is mainly introduced the 321S51 510 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 321S51 510,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Specification for steel forgings for pressure purposes

Steel Garde:321S51 510
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 1503	Specification for steel forgings for pressure purposes

Application:Specification for steel forgings for pressure purposes

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
321S51(1010)	B.S.	UK
321S51(1105)	B.S.	UK
321S51	B.S.	UK
321S51 490	B.S.	UK
321S51 520	B.S.	UK

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.04	0.10
Si		1.00
Mn		2.00
P		0.045
S		0.025
Cr	17.00	19.00
Mo
Ni	9.00	12.00
Ti		0.80

Mechanical Properties

Tensile strength	572～798	σb/MPa
Yield Strength	065	σ 0.2 ≥/MPa
Elongation	21	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	940～178	-
HRC	30	-

Physical Properties

Thermal expansion	97-08	e-6/K
Thermal conductivity	44-74	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	0592-4805	째C
Density	6617-4437	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)
321S51 510 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