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420S45 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 420S45

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B.S. 420S45

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This page is mainly introduced the 420S45 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 420S45,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steel strip intended for the manufacture of springs. Specification for martensitic and austenitic stainless steel

Steel Garde:420S45
Type:Stainless Steels
Country:UK
Standard:B.S.

Standard Number:

ITEM	Standard Number	Descriptions
1	BS 1449-2	Steel plate, sheet and strip. Specification for stainless and heat-resisting steel plate, sheet and strip
2	BS 1554	Specification for stainless and heat-resisting steel round wire
3	BS 2056	Specification for stainless steel wire for mechanical springs
4	BS 5770-4	Steel strip intended for the manufacture of springs. Specification for martensitic and austenitic stainless steel

Application:Steel strip intended for the manufacture of springs. Specification for martensitic and austenitic stainless steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
X45Cr13	DIN	Germany
1.3541	DIN	Germany

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.28	0.36
Si		1.00
Mn		1.00
P		0.04
S		0.03
Cr	12.00	14.00
Mo
Ni		1.00

Mechanical Properties

Tensile strength	308～032	σb/MPa
Yield Strength	204	σ 0.2 ≥/MPa
Elongation	73	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	370～503	-
HRC	30	-

Physical Properties

Thermal expansion	76-58	e-6/K
Thermal conductivity	71-73	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	7125-6890	째C
Density	6444-0217	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)
420S45 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