X9CrNi18-9 (Czech Republic / CSN) Material Properties

Other designations: ,
Material group: Ferrous Alloys / Stainless steels
Country/Standard: Czech Republic / CSN

Data updates

Latest Update: 2020-10
Total number of updates: 4
Update History:
2016-11 2015-02 2015-01

Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Yield Strength, Rp0.2 val1
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MPa view details
Yield Strength, Rp1 val1
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MPa view details
Tensile Strength 550 — 2400 MPa view details
Elongation, A 40 % view details
Brinell Hardness (HB) ≤ 215 view details
Yield Strength, Rp0.2 val1
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ksi view details
Yield Strength, Rp1 val1
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ksi view details
Tensile Strength 79.8 — 348.1 ksi view details
Elongation, A 40 % view details
Brinell Hardness (HB) ≤ 215 view details

Physical Properties

Temperature

0 - 30°C
30 - 100°C
100 - 300°C
≥ 300°C
PROPERTY / VALUE
Modulus of Elasticity 180 — 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
Shear Modulus 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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view details
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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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Thermal Conductivity 15 W/(m∙°C) view details
Heat Capacity val1
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J/(kg∙°C) view details
Electrical Resistivity 0.73 Ω∙mm²/m view details
Electrical Conductivity val1
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S/m view details
Modulus of Elasticity 26.1 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
Shear Modulus 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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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
Coefficient of Thermal Expansion (CTE) val1
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10-6/°F view details
Thermal Conductivity 8.67 BTU/(h∙ft∙°F) view details
Heat Capacity val1
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BTU/(lb∙°F) view details
Electrical Resistivity 1.21 E-03 Ω∙circular·mil/ft view details
Electrical Conductivity val1
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S/in view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.030 – 0.15
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
17.0 – 19.0
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
≤ 2.00
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

EN 10088-1: 2023 / Stainless steels - Part 1: List of stainless steels

Heat Treatments

  • Heat treated at 350-400°C; Duration: 30 min to 1 h; Air cooling; The optimum heat treatment conditions may be very different. The spring manufacturer shall choose those conditions answering the purpose; The heat treatment data refer to compression springs, torsion and tension (springs without initial tension).
  • Hot working (air cooling): 1200-900°C; +AT - Solution annealing (air or water cooling): 1000-1100°C.<br><br>Hot formed conditions:<br>1U - Hot formed, not heat treated, not descaled.<br>1C - Hot formed, heat treated, not descaled. <br>1E - Hot formed, heat treated, mechanically descaled. <br>1D - Hot formed, heat treated, pickled, coated (optional).<br>1X - Hot formed, heat treated, rough machined.<br>1G - Hot formed, heat treated, descaled, rough machined or shaved in the case of rod. <br>Cold processed conditions:<br>2H - Finishes 1E, 1D or 1X, cold processed, coated (optional).<br>2D - Finish 2H, heat treated, pickled and skin- passed (optional), coated (optional). <br>2B - Finishes 1E, 1D or 1X, cold processed, mechanically smoothed. <br>2G - Finishes 2H, 2D or 2B, centreless ground, mechanically smoothed (optional). <br>P - Finishes 2H, 2D, 2B or 2G, specular polishing.