DIN 1.7228 Structural and constructional steels

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

Data updates

Latest Update: 2025-08
Total number of updates: 13
Update History

This material has 831 properties — only a subset is shown here.

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DIN 1.7228 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.46 – 0.54
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.90 – 1.20
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.50 – 0.80
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
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 10250-3: 2022 / Open die steel forgings for general engineering purposes - Part 3: Alloy special steels

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DIN 1.7228 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Shear Modulus
val1
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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
42 W/(m∙°C)
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Heat Capacity
val1
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J/(kg∙°C)
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Electrical Resistivity
0.19 Ω∙mm²/m
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Electrical Conductivity
val1
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S/m
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This material has 831 properties — only a subset is shown here.

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DIN 1.7228 Heat Treatments

  • Normalized at 840-870°C
    Quenched at 820-850°C
    Tempered at 530-670°C
    Surface hardened at 820-890°C
  • Austenitizing (quenching in oil): 820-860°C, t > 30 min. Synthetic quenchants may also be used. Tempering: 540-680°C, t > 60 min. A mandatory end quench test shall be carried out at 850+/- 5°C.

DIN 1.7228 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
700 MPa
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Elongation, A
9 %
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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)
≤ 248
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Rockwell Hardness (HR)
val1
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Vickers Hardness (HV)
val1
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Grain Size
val1
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  • 171 Cross References
  • 89 Composition
  • 290 Mechanical Properties
  • 17 Physical Properties
  • 28 Heat Treatment
  • 2 Metallography
  • - Machinability
  • 56 Stress-Strain
  • - Formability
  • 3 Fatigue
  • - Fracture
  • - Creep
  • - Joints
  • - Coatings
  • 46 Dimensions
  • - Tribology
  • - Corrosion
  • - Ageing
  • - Weatherability
  • - Irradiation
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