DIN 38 Cr 2 Structural and constructional steels

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

Data updates

Latest Update: 2022-05
Total number of updates: 5
Update History
2019-06 2018-01 2017-09 2017-03

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DIN 38 Cr 2 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.3500 – 0.4200
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.4000 – 0.6000
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.5000 – 0.8000
UNIT
%
CAS NUMBER
7439-96-5
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 38 Cr 2 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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DIN 38 Cr 2 Heat Treatments

  • Austenitizing (quenching in oil or water): 830-870°C, (at least 30 min). NOTE: The temperatures at the lower end of the range are generally applicable to hardening in water and those at the upper end for hardening in oil. Synthetic quenchants may also be used; Tempering: 540-680°C, (at least 60 min); End quench test: 850±5°C.
  • Austenitizing (quenching in water or oil): 830-870°C, t > 30 min. NOTE: The temperatures at the lower end of the range are generally applicable to hardening in water and those at the upper end for hardening in oil. 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 38 Cr 2 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
580 MPa
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Elongation, A
14 %
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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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Rockwell Hardness (HR)
val1
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  • 104 Cross References
  • 43 Composition
  • 125 Mechanical Properties
  • 3 Physical Properties
  • 12 Heat Treatment
  • - Metallography
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  • - Formability
  • 5 Fatigue
  • - Fracture
  • - Creep
  • - Joints
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  • 4 Dimensions
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