23-8N (United States / SAE) Material Properties

Material group: Ferrous Alloys / Stainless steels
Country/Standard: United States / SAE

Data updates

Latest Update: 2024-03
Total number of updates: 2
Update History:
2018-06

Mechanical Properties

Temperature

≤ 0°C
0 - 30°C
≥ 300°C
PROPERTY / VALUE
Yield Strength, Rp0.2 550 — 634 MPa view details
Yield Strength, Rp0.2 val1
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MPa view details
Tensile Strength 1019.9 MPa view details
Tensile Strength val1
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MPa view details
Tensile Strength val1
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MPa view details
Elongation, A 20 % view details
Elongation, A val1
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% view details
Reduction of Area val1
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% view details
Rockwell Hardness (HR) val1
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view details
Yield Strength, Rp0.2 79.8 — 92 ksi view details
Yield Strength, Rp0.2 val1
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ksi view details
Tensile Strength 147.9 ksi view details
Tensile Strength val1
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ksi view details
Tensile Strength val1
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ksi view details
Elongation, A 20 % view details
Elongation, A val1
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% view details
Reduction of Area val1
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% view details
Rockwell Hardness (HR) val1
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view details

Physical Properties

Temperature

0 - 30°C
30 - 100°C
100 - 300°C
≥ 300°C
PROPERTY / VALUE
Modulus of Elasticity 190 — 215 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 14.5 — 18 W/(m∙°C) view details
Heat Capacity val1
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J/(kg∙°C) view details
Electrical Resistivity 0.75 Ω∙mm²/m view details
Electrical Conductivity val1
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S/m view details
Modulus of Elasticity 27.6 E+03 — 31.2 E+03 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 8.38 — 10.4 BTU/(h∙ft∙°F) view details
Heat Capacity val1
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BTU/(lb∙°F) view details
Electrical Resistivity 1.25 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
0.28 – 0.38
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
22.00 – 24.00
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Fe
VALUE
Base
UNIT
%
CAS NUMBER
7439-89-6
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
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
CRITERIA
W
VALUE
val1
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UNIT
%
CAS NUMBER
7440-33-7

SAE J775: 2004 / Engine poppet valve information report

Heat Treatments

  • Hot forming at 1150 - 980°C; <br> Quenching or solution heat treatment at 1150 - 1170°C, water quenching; <br> Tempering or artifical aging at 800 - 830°C, 8h, air cooling.