38Si7 (Germany / DIN) Material Properties

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

Data updates

Latest Update: -
Total number of updates: 0
Update History:
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Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Yield Strength, Rp0.2 val1
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MPa view details
Tensile Strength 1300 — 1600 MPa view details
Elongation, A 8 % view details
Reduction of Area val1
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% view details
Impact Energy val1
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J view details
Brinell Hardness (HB) ≤ 280 view details
Yield Strength, Rp0.2 val1
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ksi view details
Tensile Strength 188.5 — 232.1 ksi view details
Elongation, A 8 % view details
Reduction of Area val1
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% view details
Impact Energy val1
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ft·lb view details
Brinell Hardness (HB) ≤ 280 view details

Physical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Modulus of Elasticity 190 — 210 GPa view details
Density 7.67 — 7.86 kg/dm³ view details
Poisson Coefficient 0.27 — 0.3 view details
Modulus of Elasticity 27.6 E+03 — 30.5 E+03 ksi view details
Density 0.277 — 0.284 lb/in³ view details
Poisson Coefficient 0.27 — 0.3 view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.35 – 0.42
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Mn
VALUE
0.50 – 0.80
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
P
VALUE
≤ 0.030
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 17221: 1988 / Hot rolled steels for springs suitable for quenching and tempering - Technical delivery conditions

Heat Treatments

  • Hardening (cooling in water): 830-860°C
  • Quench hardening temperature: 880 +/- 10°C (in water like a quenching medium); Tempering temperature: 450 +/- 10°C