ISO 61 SiCr 7 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country/Standard: International / ISO

Data updates

Latest Update: 2024-01
Total number of updates: 2
Update History
2022-08

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ISO 61 SiCr 7 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.57 – 0.65
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.20 – 0.40
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu+10Sn
VALUE
≤ 0.6000
UNIT
%
CAS NUMBER
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
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

Heat-treatable steels, alloy steels and free-cutting steels - Part 14: Hot-rolled steels for quenched and tempered springs, ISO 683-14 / 1992

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ISO 61 SiCr 7 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 319 properties — only a subset is shown here.

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ISO 61 SiCr 7 Heat Treatments

  • Quench hardening in oil 860±10 °C; Tempering 450±10 °C.

ISO 61 SiCr 7 Mechanical Properties


Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
1550 — 1850 MPa
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Elongation, A
5.5 %
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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)
≤ 280
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Rockwell Hardness (HR)
val1
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Grain Size
val1
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  • 134 Cross References

  • 14 Composition
  • 43 Mechanical Properties
  • 3 Physical Properties
  • 8 Heat Treatment
  • - Metallography
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