12Cr18Ni9 (China / GB) Material Properties

Other designations:
Material group: Ferrous Alloys / Stainless steels
Country/Standard: China / GB

Data updates

Latest Update: 2024-10
Total number of updates: 15
Update History:
2024-03 2021-02 2020-01 2019-10 2019-05 2018-11 2017-05 2017-01 2016-12 2016-08 2016-05 2015-10 2015-08 2014-10

Mechanical Properties

Temperature

≤ 0°C
0 - 30°C
≥ 300°C
PROPERTY / VALUE
Yield Strength, Rp0.2 val1
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MPa view details
Yield Strength, Rp0.2 val1
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MPa view details
Tensile Strength 853.5 — 1695.3 MPa view details
Tensile Strength val1
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MPa view details
Tensile Strength val1
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Elongation, A 41.7 — 62.2 % view details
Elongation, A val1
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% view details
Elongation, A val1
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% view details
Reduction of Area val1
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% view details
Reduction of Area val1
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% view details
Reduction of Area val1
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% view details
Brinell Hardness (HB) 187 view details
Rockwell Hardness (HR) val1
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Vickers Hardness (HV) val1
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Yield Strength, Rp0.2 val1
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ksi view details
Yield Strength, Rp0.2 val1
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ksi view details
Tensile Strength 123.8 — 245.9 ksi view details
Tensile Strength val1
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ksi view details
Tensile Strength val1
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Elongation, A 41.7 — 62.2 % view details
Elongation, A val1
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% view details
Elongation, A val1
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% view details
Reduction of Area val1
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% view details
Reduction of Area val1
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% view details
Reduction of Area val1
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% view details
Brinell Hardness (HB) 187 view details
Rockwell Hardness (HR) val1
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Vickers Hardness (HV) val1
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Physical Properties

Temperature

0 - 30°C
30 - 100°C
100 - 300°C
≥ 300°C
PROPERTY / VALUE
Modulus of Elasticity 184 — 215 GPa view details
Modulus of Elasticity val1
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GPa view details
Modulus of Elasticity val1
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GPa view details
Modulus of Elasticity val1
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GPa view details
Density val1
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kg/dm³ view details
Poisson Coefficient val1
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Poisson Coefficient val1
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Poisson Coefficient val1
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Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Thermal Conductivity 15 — 15.9 W/(m∙°C) view details
Thermal Conductivity val1
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W/(m∙°C) view details
Thermal Conductivity val1
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W/(m∙°C) view details
Thermal Conductivity val1
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W/(m∙°C) view details
Heat Capacity val1
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J/(kg∙°C) view details
Heat Capacity val1
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J/(kg∙°C) view details
Heat Capacity val1
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J/(kg∙°C) view details
Heat Capacity val1
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J/(kg∙°C) view details
Electrical Resistivity 0.7 — 0.73 Ω∙mm²/m view details
Electrical Resistivity val1
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Ω∙mm²/m view details
Electrical Resistivity val1
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Ω∙mm²/m view details
Electrical Resistivity val1
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Ω∙mm²/m view details
Modulus of Elasticity 26.7 E+03 — 31.2 E+03 ksi view details
Modulus of Elasticity val1
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ksi view details
Modulus of Elasticity val1
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ksi view details
Modulus of Elasticity val1
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ksi view details
Density val1
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lb/in³ view details
Poisson Coefficient val1
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Poisson Coefficient val1
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Poisson Coefficient val1
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Coefficient of Thermal Expansion (CTE) val1
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10-6/°F view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°F view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°F view details
Thermal Conductivity 8.67 — 9.19 BTU/(h∙ft∙°F) view details
Thermal Conductivity val1
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BTU/(h∙ft∙°F) view details
Thermal Conductivity val1
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BTU/(h∙ft∙°F) view details
Thermal Conductivity val1
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BTU/(h∙ft∙°F) view details
Heat Capacity val1
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BTU/(lb∙°F) view details
Heat Capacity val1
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BTU/(lb∙°F) view details
Heat Capacity val1
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BTU/(lb∙°F) view details
Heat Capacity val1
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BTU/(lb∙°F) view details
Electrical Resistivity 1.16 E-03 — 1.21 E-03 Ω∙circular·mil/ft view details
Electrical Resistivity val1
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Ω∙circular·mil/ft view details
Electrical Resistivity val1
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Ω∙circular·mil/ft view details
Electrical Resistivity val1
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Ω∙circular·mil/ft view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.15
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
17.00 – 19.00
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
≤ 2.00
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
N
VALUE
val1
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UNIT
%
CAS NUMBER
7727-37-9; 17778-88-0
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

GB/T 1220: 2007 / Stainless steel bars

Heat Treatments

  • Heat to ≥ 1040°C, rapid cooling.
  • Heat treatment 1: Heat treated at 1150°C, cooled. Heat treatment 2: Heat treated at 1080°C, cooled.