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X50CrMnNiNbN21-9 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of X50CrMnNiNbN21-9

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ISO X50CrMnNiNbN21-9

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This page is mainly introduced the X50CrMnNiNbN21-9 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of X50CrMnNiNbN21-9,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:X50CrMnNiNbN21-9
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
X50CrMnNiNbN21-9	AFNOR	France
1.4882	AFNOR	France

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.45	0.55
Si		0.45
Mn	8.00	10.00
P		0.050
S		0.030
Cr	20.00	22.00
Mo
Ni	3.50	5.50
W	0.80	1.50
Nb+Ta	1.80	2.50
N	0.40	0.60

Mechanical Properties

Tensile strength	639～979	σb/MPa
Yield Strength	972	σ 0.2 ≥/MPa
Elongation	27	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	419～009	-
HRC	30	-

Physical Properties

Thermal expansion	39-03	e-6/K
Thermal conductivity	16-83	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	1458-5110	째C
Density	6618-2683	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)
X50CrMnNiNbN21-9 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