CNS 631 Stainless steels

Material group: Ferrous Alloys / Stainless steels
Country / Standard: China / CNS

Data updates

Latest Update: 2021-01
Total number of updates: 1
Update History

This material has 72 properties — only a subset is shown here.

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CNS 631 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
0.75 – 1.50
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
C
VALUE
≤ 0.09
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
16.00 – 18.00
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
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

G3067: 1987 / Stainless steel bars

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CNS 631 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 72 properties — only a subset is shown here.

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CNS 631 Heat Treatments

  • Solutionizing: 1000 - 1100°C, rapid cooling. Precipitation hardening: TH1050: After solutionizing, 760°C +/- 15°C (90 minutes), cool down to 15°C or lower within 1 hour (30 minutes), 565°C +/- 10°C (90 minutes), then air cool. RH950: After solutionizing, 955°C +/- 10°C (10 minutes), air cool down to room temperature, -73°C +/- 6°C within 24 hours (8 hours), 510°C +/- 10°C (60 minutes), then air cool.

CNS 631 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
≥ 1030 MPa
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Brinell Hardness (HB)
≥ 229
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Elongation, A
≥ 4 %
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Reduction of Area
val1
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%
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Yield Strength, Rp0.2
val1
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MPa
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  • 45Cross References
  • 8Composition
  • 14Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
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