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321S51 520 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 321S51 520

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B.S. 321S51 520

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This page is mainly introduced the 321S51 520 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 321S51 520,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:321S51 520
Type:Stainless Steels
Country:UK
Standard:B.S.

Standard Number:

ITEM	Standard Number	Descriptions
1	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

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 510	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	874～398	σb/MPa
Yield Strength	989	σ 0.2 ≥/MPa
Elongation	01	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	586～278	-
HRC	30	-

Physical Properties

Thermal expansion	81-94	e-6/K
Thermal conductivity	66-14	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	6328-8780	째C
Density	2044-0702	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 520 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