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1.4903

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1.4605(EN) X10CrMoVNb9-1
#1-4903

Description

European EN EN 10302: 2008, EN 10028-2: 2009, EN 10222-2: 2000, EN 10216-2: 2014, EN 10253-2: 2007, EN 10088-1: 2005, 1.4903 Specialsteel Alloy special martensitic creep-resisting steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 1.4903
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel 1.4903 Martensite EN European Alloy special martensitic creep-resisting steel

Chemical composition(mass fraction)(wt.%) of the 1.4903

C Si Mn Ni P S Cr Mo V N Nb Al
0.08 -0.12 ≤0.5 0.3 -0.6 ≤0.4 ≤0.025 ≤0.015 8.0 -9.5 0.85 -1.05 0.18 -0.25 0.03 -0.07 0.06 -0.10 ≤0.03

Mechanical Properties of steel grade 1.4903

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
934 (≥) 362 (≥) 33 42 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 324

Physical Properties of steel grade 1.4903

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
23 - -     0.34 -  
628 545 - 41.3 213   -  
168 - 14 34.2   112 141

Heat Treatment of steel grade 1.4903

Heat treated : 1746°C - 1863°C

Technological Curves of steel grade 1.4903

Relevant standard of 1.4903

EN 10302: 2008 Creep resisting steels, nickel and cobalt alloys EN-10302:-2008.pdf
EN 10028-2: 2009 Flat products made of steels for pressure purposes. Non-alloy and alloy steels with specified elevated temperature properties EN-10028-2:-2009.pdf
EN 10222-2: 2000 Steel forgings for pressure purposes. Ferritic and martensitic steels with specified elevated temperature properties EN-10222-2:-2000.pdf
EN 10216-2: 2014 Seamless steel tubes for pressure purposes. Technical delivery conditions. Non-alloy and alloy steel tubes with specified elevated temperature properties EN-10216-2:-2014.pdf
EN 10253-2: 2007 Butt-welding pipe fittings. Non alloy and ferritic alloy steels with specific inspection requirements EN-10253-2:-2007.pdf
EN 10088-1: 2005 Stainless steels. List of stainless steels EN-10088-1:-2005.pdf
1.4605(EN) X10CrMoVNb9-1
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Jiangyou Longhai Special Steel Co.,Ltd.

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