DIN 1.1221 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: 11
Update History

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DIN 1.1221 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.5700 – 0.6500
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 1652-4: 1990 / Bright steel made from steel for quenching and tempering; technical delivery conditions

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DIN 1.1221 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Shear Modulus
80 GPa
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Dynamic Modulus of Elasticity
val1
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GPa
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Density
7.67 — 7.86 kg/dm³
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Poisson Coefficient
val1
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DIN 1.1221 Heat Treatments

  • Annealed (+A): 650-700°C Normalized (+N): 820-860°C Austenitized: 800-840°C Tempered: 550-680°C
  • Annealing: 650-700°C; Normalizing: 830-860°C; Hardening in water: 805-835°C; Hardening in oil: 815-845°C; Tempering: 540-680°C

DIN 1.1221 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
620 MPa
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Elongation, A
4 %
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Reduction of Area
val1
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%
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Brinell Hardness (HB)
196 — 278
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Rockwell Hardness (HR)
val1
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Vickers Hardness (HV)
val1
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Grain Size
val1
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