DIN C25R 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 C25R Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.22 – 0.29
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
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
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

EN 10277: 2018 / Bright steel products - Technical delivery conditions

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DIN C25R 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 9257 properties — only a subset is shown here.

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DIN C25R Heat Treatments

  • Hardening: 860-900°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 (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: 880-920°C.
  • Austenitizing (quenching in water): 860-900°C, t > 30 min. Tempering: 550-660°C, t > 60 min. Normalizing: 880-920°C, t > 30 min.

DIN C25R Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
440 — 880 MPa
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Elongation, A
6 %
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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)
130 — 187
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Grain Size
val1
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