DIN 1.0478 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: 7
Update History

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DIN 1.0478 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
≥ 0.020
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
C
VALUE
≤ 0.18
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
CEV
VALUE
≤ 0.41
UNIT
%
CAS NUMBER
CRITERIA
Cr
VALUE
val1
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UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
val1
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UNIT
%
CAS NUMBER
7440-50-8
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
N
VALUE
val1
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UNIT
%
CAS NUMBER
7727-37-9; 17778-88-0
CRITERIA
Nb
VALUE
val1
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UNIT
%
CAS NUMBER
7440-03-1
CRITERIA
Nb+V
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
V
VALUE
val1
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UNIT
%
CAS NUMBER
7440-62-2

EN 10222-4: 2017 / Steel forgings for pressure purposes - Part 4: Weldable fine grain steels with high proof strength

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DIN 1.0478 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 676 properties — only a subset is shown here.

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DIN 1.0478 Heat Treatments

  • Quenched and tempered: 860-940°C, cooled in oil, polymer or water. Tempered at 600-700°C.
  • Quench and temper:
    Hardening at 860-940°C, after reaching the temperature in the entire cross-section quench in water, oil or cool in air.
    Tempering at 560-700°C, holding time according to DIN EN 10052 at least 30 min, cool down in still air.
    Normalizing at 880-960°C, after reaching the temperature in the entire cross-section cool in still air.
    Heat treatment after welding:
    Stress relief annealing at 530-580°C, cool in still air or in the oven.
    When heating the annealing temperature on the surface of the component, the following guide values are recommended depending on the thickness:
    ≤ 15 mm at least 15 min
    > 15 mm ≤ 30 mm at least 30 min
    > 30 mm ≤ 350 mm at least 60 min
    > 350 mm about 120 min
    The maximum holding time according to DIN EN 10052 for the usual stress-relief annealing is 150 min. With a holding time > 90 min or with multiple anneals, the lower limit of the temperature range should be aimed for.

DIN 1.0478 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
205 MPa
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Tensile Strength
370 — 510 MPa
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Elongation, A
22 %
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Impact Energy
val1
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J
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  • 208 Cross References
  • 29 Composition
  • 94 Mechanical Properties
  • 3 Physical Properties
  • 2 Heat Treatment
  • - Metallography
  • - Machinability
  • - Stress-Strain
  • - Formability
  • - Fatigue
  • - Fracture
  • - Creep
  • - Joints
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  • 136 Dimensions
  • - Tribology
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  • - Ageing
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