DIN 1.6359 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country/Standard: Germany / DIN

Data updates

Latest Update: 2025-11
Total number of updates: 1
Update History

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DIN 1.6359 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
0.05 – 0.15
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
C
VALUE
≤ 0.03
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Co
VALUE
7.0 – 8.5
UNIT
%
CAS NUMBER
7440-48-4
CRITERIA
Fe
VALUE
val1
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UNIT
%
CAS NUMBER
7439-89-6
CRITERIA
Mn
VALUE
val1
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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
CRITERIA
Ti
VALUE
val1
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UNIT
%
CAS NUMBER
7440-32-6

EN 3528: 2013 / Aerospace series. Steel X2NiCoMo18-8-5 (1.6359) - Vacuum induction melted and vacuum arc remelted. Solution treated and precipitation treated. Bar. a or D ≤ 150 mm. 1 750 MPa ≤ Rm ≤ 2 000 MPa

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DIN 1.6359 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Density
7.67 — 7.86 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 248 properties — only a subset is shown here.

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DIN 1.6359 Heat Treatments

  • Solution treated: 790°C <= θ <= 840°C / AC and precipitation treated: + 465°C θ <= 495°C / t => 3h.
  • Solution treated (Delivery condition): 790-840°C / AC
    Solution treated and precipitation treated (Use condition): Delivery condition + 465-495°C / t ≥ 3h / AC

DIN 1.6359 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
1750 — 2000 MPa
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Elongation, A
3 %
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Reduction of Area
val1
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%
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Impact Energy
val1
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J
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Brinell Hardness (HB)
≤ 372
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Vickers Hardness (HV)
val1
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Grain Size
val1
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  • 96 Cross References
  • 31 Composition
  • 38 Mechanical Properties
  • 3 Physical Properties
  • 3 Heat Treatment
  • - Metallography
  • - Machinability
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  • 1 Formability
  • - Fatigue
  • - Fracture
  • - Creep
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