DIN 1.1203 Structural and constructional steels

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

Data updates

Latest Update: 2024-07
Total number of updates: 5
Update History
2022-08 2021-12 2019-06 2019-02

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DIN 1.1203 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.5200 – 0.6000
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Mn
VALUE
0.6000 – 0.9000
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
P
VALUE
≤ 0.0350
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 17204: 1990 / Seamless circular tubes of steels for quenching and tempering; technical delivery conditions

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DIN 1.1203 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Shear Modulus
79 GPa
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Density
7.67 — 7.86 kg/dm³
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Poisson Coefficient
val1
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DIN 1.1203 Heat Treatments

  • Annealing: 650-700°C; Normalizing: 830-860°C; Hardening in water: 805-835°C; Hardening in oil: 815-845°C; Tempering: 540-680°C
  • Austenitizing (quenching in water or oil): 805-845°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. A mandatory end quench test shall be carried out at 830+/- 5°C. Normalizing: 825-865°C, t > 30 min.

DIN 1.1203 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
590 — 1700 MPa
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Elongation, A
8 %
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Reduction of Area
val1
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%
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Brinell Hardness (HB)
≤ 255
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Rockwell Hardness (HR)
val1
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Vickers Hardness (HV)
val1
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  • 624 Cross References
  • 60 Composition
  • 170 Mechanical Properties
  • 6 Physical Properties
  • 13 Heat Treatment
  • 3 Metallography
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  • 1 Formability
  • 11 Fatigue
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