DIN C50 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: 4
Update History
2019-06 2018-10 2018-09

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DIN C50 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.47 – 0.55
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
≤ 0.40
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cr+Mo+Ni
VALUE
≤ 0.63
UNIT
%
CAS NUMBER
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

Steels for quenching and tempering - Part 2: Technical delivery conditions for non alloy steels, EN 10083-2 / 1996

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DIN C50 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 C50 Heat Treatments

  • Hardening: 810-850°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: Oil or water (Other quenching agents such as synthetic quenchants may also be used.);
    Tempering: 550-660°C (Time for tempering as a guide: at least 1h.);
    Normalizing: 830-870°C.
  • Austenitizing (quenching in water or oil): 810-850°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: 550-660°C, t > 60 min. Normalizing: 830-870°C, t > 30 min.

DIN C50 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
590 — 1100 MPa
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Elongation, A
5 %
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Reduction of Area
val1
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%
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Brinell Hardness (HB)
179 — 269
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Grain Size
val1
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  • 352 Cross References
  • 58 Composition
  • 95 Mechanical Properties
  • 3 Physical Properties
  • 4 Heat Treatment
  • - Metallography
  • - Machinability
  • - Stress-Strain
  • - Formability
  • 10 Fatigue
  • - Fracture
  • - Creep
  • - Joints
  • - Coatings
  • 6 Dimensions
  • - Tribology
  • - Corrosion
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