EN 1.4731 Stainless steels

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

Data updates

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

This material has 135 properties — only a subset is shown here.

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EN 1.4731 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.35 – 0.45
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
9.50 – 11.50
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
≤ 0.80
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
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

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

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EN 1.4731 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 215 GPa
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Density
7.61 — 8.1 kg/dm³
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Poisson Coefficient
val1
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Thermal Conductivity
21 W/(m∙°C)
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Heat Capacity
val1
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J/(kg∙°C)
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This material has 135 properties — only a subset is shown here.

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EN 1.4731 Heat Treatments

  • Hot working: 1100-900°C;
    Soft annealing (air cooling or water quenching): 780-820°C;
    Hardening (quenching in oil): 1000-1050°C;
    Tempering (air cooling or water quenching): 720-820°C.

EN 1.4731 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
900 — 1100 MPa
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Elongation, A
14 %
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Reduction of Area
val1
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%
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Brinell Hardness (HB)
266 — 325
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  • 51 Cross References
  • 8 Composition
  • 15 Mechanical Properties
  • 11 Physical Properties
  • 1 Heat Treatment
  • - Metallography
  • - Machinability
  • 1 Stress-Strain
  • - Formability
  • - Fatigue
  • - Fracture
  • - Creep
  • - Joints
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  • - Dimensions
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