DIN 28Mn6 Structural and constructional steels

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

Data updates

Latest Update: 2024-12
Total number of updates: 7
Update History

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DIN 28Mn6 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.2500 – 0.3200
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
≤ 0.4000
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
1.3000 – 1.6500
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

DIN 1652-4: 1990 / Bright steel made from steel for quenching and tempering; technical delivery conditions

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DIN 28Mn6 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 732 properties — only a subset is shown here.

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DIN 28Mn6 Heat Treatments

  • Hardening: 830-870°C (Temperatures at the lower end of the range are generally used for water, and those at the upper end for oil quenching; Time for austenitizing as a guide: at least 30 min.);
    Quenching agent: Water or oil (Other quenching agents such as synthetic quenchants may also be used.);
    Tempering: 540-680°C (Time for tempering as a guide: at least 1h.);
    End quench test austenitizing: 850 ± 5°C (Time for austenitizing as a guide: 30-35 min.).
  • Annealing: 650-750°C; Normalizing: 850-880°C; Hardening in water: 820-850°C; Hardening in oil: 830-860°C; Tempering: 540-680°C

DIN 28Mn6 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
470 — 1000 MPa
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Elongation, A
11 %
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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)
≤ 255
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Grain Size
val1
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  • 219 Cross References
  • 75 Composition
  • 247 Mechanical Properties
  • 3 Physical Properties
  • 13 Heat Treatment
  • - Metallography
  • - Machinability
  • - Stress-Strain
  • - Formability
  • 10 Fatigue
  • - Fracture
  • - Creep
  • - Joints
  • - Coatings
  • 6 Dimensions
  • - Tribology
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