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X55CrMnNiN20-8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of X55CrMnNiN20-8

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ISO X55CrMnNiN20-8

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This page is mainly introduced the X55CrMnNiN20-8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of X55CrMnNiN20-8,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines

Steel Garde:X55CrMnNiN20-8
Type:Stainless Steels
Country:International
Standard:ISO

Standard Number:

ITEM	Standard Number	Descriptions
1	ISO 683-15 (1992)	Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines

Metallographic Structure:Austenite
Application:Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
X55CrMnNiN20-8	AFNOR	France
1.4875	AFNOR	France

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.50	0.60
Si		0.25
Mn	7.00	10.00
P		0.050
S		0.030
Cr	19.50	21.50
Mo
Ni	1.50	2.75
N	0.20	0.40

Mechanical Properties

Tensile strength	301～391	σb/MPa
Yield Strength	072	σ 0.2 ≥/MPa
Elongation	56	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	294～704	-
HRC	30	-

Physical Properties

Thermal expansion	53-20	e-6/K
Thermal conductivity	06-82	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8355-8021	째C
Density	2239-8029	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)
X55CrMnNiN20-8 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