EN 1.4509 Stainless steels

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

Data updates

Latest Update: 2025-11
Total number of updates: 10
Update History

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EN 1.4509 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.030
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
17.5 – 18.5
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
≤ 1.00
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Nb
VALUE
val1
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UNIT
%
CAS NUMBER
7440-03-1
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
Ti
VALUE
val1
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UNIT
%
CAS NUMBER
7440-32-6

EN 10088-2: 2024 / Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes

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EN 1.4509 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 220 GPa
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Density
val1
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kg/dm³
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Poisson Coefficient
val1
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Thermal Conductivity
25 W/(m∙°C)
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Heat Capacity
val1
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J/(kg∙°C)
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Electrical Resistivity
0.6 Ω∙mm²/m
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Electrical Conductivity
val1
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S/m
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This material has 633 properties — only a subset is shown here.

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EN 1.4509 Heat Treatments

  • Hot forming: 1100-800°C, air cooling;
    +A - Annealing: 870-930°C (If heat-treatment is carried out in a continuous furnace, the upper part of the range specified should usually be preferred, or even exceeded), air or water cooling.
  • Hot forming: 1100 - 800°C, air cooling. Annealing: 870 - 930°C, air, water cooling.

EN 1.4509 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
400 — 750 MPa
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Elongation, A
8 %
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Impact Energy
val1
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J
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Brinell Hardness (HB)
≤ 200
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  • 249 Cross References
  • 56 Composition
  • 66 Mechanical Properties
  • 18 Physical Properties
  • 4 Heat Treatment
  • 1 Metallography
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  • 5 Fatigue
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