X 50 CrMnNiNbN 21-9 (European Union / EN) Material Properties

Other designations:
Material group: Ferrous Alloys / Stainless steels
Country/Standard: European Union / EN

Data updates

Latest Update: 2020-04
Total number of updates: 1
Update History:

Mechanical Properties

Temperature

0 - 30°C
≥ 300°C
PROPERTY / VALUE
Yield Strength, Rp0.2 580 MPa view details
Yield Strength, Rp0.2 val1
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MPa view details
Tensile Strength 950 — 1150 MPa view details
Tensile Strength val1
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MPa view details
Elongation, A 12 % view details
Reduction of Area val1
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% view details
Rockwell Hardness (HR) val1
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Yield Strength, Rp0.2 84.1 ksi view details
Yield Strength, Rp0.2 val1
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ksi view details
Tensile Strength 137.8 — 166.8 ksi view details
Tensile Strength val1
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ksi view details
Elongation, A 12 % view details
Reduction of Area val1
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% view details
Rockwell Hardness (HR) val1
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view details

Physical Properties

Temperature

0 - 30°C
30 - 100°C
100 - 300°C
≥ 300°C
PROPERTY / VALUE
Modulus of Elasticity 190 — 215 GPa view details
Density 7.61 — 8.1 kg/dm³ view details
Poisson Coefficient val1
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Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Thermal Conductivity 14.5 W/(m∙°C) view details
Heat Capacity val1
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J/(kg∙°C) view details
Modulus of Elasticity 27.6 E+03 — 31.2 E+03 ksi view details
Density 0.275 — 0.293 lb/in³ view details
Poisson Coefficient val1
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view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°F view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°F view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°F view details
Thermal Conductivity 8.38 BTU/(h∙ft∙°F) view details
Heat Capacity val1
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BTU/(lb∙°F) view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.45 – 0.55
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
20.00 – 22.00
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
8.00 – 10.00
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
N
VALUE
val1
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UNIT
%
CAS NUMBER
7727-37-9; 17778-88-0
CRITERIA
Nb+Ta
VALUE
val1
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UNIT
%
CAS NUMBER
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0
CRITERIA
P
VALUE
val1
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UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
val1
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UNIT
%
CAS NUMBER
7704-34-9
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3
CRITERIA
W
VALUE
val1
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UNIT
%
CAS NUMBER
7440-33-7

EN 10090: 1998 / Valve steels and alloys for internal combustion engines

Heat Treatments

  • Hot working: 1150-950°C;<br>Solution annealing (quenching in water): 1160-1200°C;<br>Precipitation hardening (cooling in air): 760-815°C (4-8 hours).