ISO SS Type 8 Stainless steels

Material group: Ferrous Alloys / Stainless steels
Country / Standard: International / ISO

Data updates

Latest Update: 2023-02
Total number of updates: 1
Update History

This material has 37 properties — only a subset is shown here.

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ISO SS Type 8 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.04 – 0.07
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
15.0 – 16.0
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
1.40 – 2.10
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
CRITERIA
Ti
VALUE
val1
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UNIT
%
CAS NUMBER
7440-32-6

ISO 683-16: 1976 / Heat-treated steels, alloy steels and free-cutting steels - Part 16: Precipitation hardening stainless steels

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ISO SS Type 8 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 215 GPa
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Density
7.61 — 8.1 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 37 properties — only a subset is shown here.

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ISO SS Type 8 Heat Treatments

  • Sheet and strip, plates:
    Solution treated (ST): 1050 ± 15°C, cool in air.
    Precipitation hardened (R118): 750 ± 10°C for 2 h, cool in air to 0 ± 5°C. Reheat 450 ± 10°C for 2 h, cool in air.
    Precipitation hardened (R098): 750 ± 10°C for 2 h, cool in air to 0 ± 5°C. Reheat 540 ± 10°C for 2 h, cool in air.

ISO SS Type 8 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
980 — 1370 MPa
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Brinell Hardness (HB)
≤ 235
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Elongation, A
≥ 6 %
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Rockwell Hardness (HR)
val1
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Yield Strength, Rp0.2
val1
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MPa
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  • 2Cross References
  • 10Composition
  • 21Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
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