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1.4903 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.4903

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EN 1.4903

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This page is mainly introduced the 1.4903 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.4903,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
1.4903

Steel Garde:1.4903
Type:Stainless Steels
Country:European
Standard:EN

Standard Number:

ITEM	Standard Number	Descriptions
1	EN 10302: 2008	Creep resisting steels, nickel and cobalt alloys
2	EN 10028-2: 2009	Flat products made of steels for pressure purposes. Non-alloy and alloy steels with specified elevated temperature properties
3	EN 10222-2: 2000	Steel forgings for pressure purposes. Ferritic and martensitic steels with specified elevated temperature properties
4	EN 10216-2: 2014	Seamless steel tubes for pressure purposes. Technical delivery conditions. Non-alloy and alloy steel tubes with specified elevated temperature properties
5	EN 10253-2: 2007	Butt-welding pipe fittings. Non alloy and ferritic alloy steels with specific inspection requirements
6	EN 10088-1: 2005	Stainless steels. List of stainless steels

Metallographic Structure:Martensite
Application:Alloy special martensitic creep-resisting steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
X10CrMoVNb9-1	EN	European

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.08	0.12
Si		0.5
Mn	0.3	0.6
Ni		0.4
P		0.025
S		0.015
Cr	8.0	9.5
Mo	0.85	1.05
V	0.18	0.25
N	0.03	0.07
Nb	0.06	0.10
Al		0.03

Mechanical Properties

Tensile strength	228～027	σb/MPa
Yield Strength	326	σ 0.2 ≥/MPa
Elongation	85	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	553～781	-
HRC	30	-

Physical Properties

Thermal expansion	69-74	e-6/K
Thermal conductivity	71-02	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3900-1998	째C
Density	1884-2154	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)
1.4903 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