SA-995 Grade 4A (United States / ASME) Material Properties

Alternative designations: 22Cr-5Ni-3Mo-N
Material group: Ferrous Alloys / Cast steels
Country/Standard: United States / ASME

Data updates

Latest Update: 2024-01
Total number of updates: 3
Update History:
2023-12 2023-10

Mechanical Properties

Temperature

≤ 0°C
0 - 30°C
30 - 100°C
100 - 300°C
≥ 300°C
PROPERTY / VALUE
Yield Strength, Rp0.2 415 MPa view details
Yield Strength, Rp0.2 val1
Full data access requires a free trial. Sign Up Free
MPa view details
Yield Strength, Rp0.2 val1
Full data access requires a free trial. Sign Up Free
MPa view details
Yield Strength, Rp0.2 val1
Full data access requires a free trial. Sign Up Free
MPa view details
Tensile Strength 620 MPa view details
Tensile Strength val1
Full data access requires a free trial. Sign Up Free
MPa view details
Tensile Strength val1
Full data access requires a free trial. Sign Up Free
MPa view details
Tensile Strength val1
Full data access requires a free trial. Sign Up Free
MPa view details
Elongation, A 25 % view details
Impact Energy val1
Full data access requires a free trial. Sign Up Free
J view details
Yield Strength, Rp0.2 60.2 ksi view details
Yield Strength, Rp0.2 val1
Full data access requires a free trial. Sign Up Free
ksi view details
Yield Strength, Rp0.2 val1
Full data access requires a free trial. Sign Up Free
ksi view details
Yield Strength, Rp0.2 val1
Full data access requires a free trial. Sign Up Free
ksi view details
Tensile Strength 89.9 ksi view details
Tensile Strength val1
Full data access requires a free trial. Sign Up Free
ksi view details
Tensile Strength val1
Full data access requires a free trial. Sign Up Free
ksi view details
Tensile Strength val1
Full data access requires a free trial. Sign Up Free
ksi view details
Elongation, A 25 % view details
Impact Energy val1
Full data access requires a free trial. Sign Up Free
ft·lb view details

Physical Properties

Temperature

≤ 0°C
0 - 30°C
30 - 100°C
100 - 300°C
≥ 300°C
PROPERTY / VALUE
Modulus of Elasticity 209 GPa view details
Modulus of Elasticity val1
Full data access requires a free trial. Sign Up Free
GPa view details
Modulus of Elasticity val1
Full data access requires a free trial. Sign Up Free
GPa view details
Modulus of Elasticity val1
Full data access requires a free trial. Sign Up Free
GPa view details
Modulus of Elasticity val1
Full data access requires a free trial. Sign Up Free
GPa view details
Density 7.83 kg/dm³ view details
Poisson Coefficient val1
Full data access requires a free trial. Sign Up Free
view details
Coefficient of Thermal Expansion (CTE) val1
Full data access requires a free trial. Sign Up Free
10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
Full data access requires a free trial. Sign Up Free
10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
Full data access requires a free trial. Sign Up Free
10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
Full data access requires a free trial. Sign Up Free
10-6/°C view details
Thermal Conductivity 14.1 W/(m∙°C) view details
Thermal Conductivity val1
Full data access requires a free trial. Sign Up Free
W/(m∙°C) view details
Thermal Conductivity val1
Full data access requires a free trial. Sign Up Free
W/(m∙°C) view details
Thermal Conductivity val1
Full data access requires a free trial. Sign Up Free
W/(m∙°C) view details
Service Temperature val1
Full data access requires a free trial. Sign Up Free
°C view details
Modulus of Elasticity 30.3 E+03 ksi view details
Modulus of Elasticity val1
Full data access requires a free trial. Sign Up Free
ksi view details
Modulus of Elasticity val1
Full data access requires a free trial. Sign Up Free
ksi view details
Modulus of Elasticity val1
Full data access requires a free trial. Sign Up Free
ksi view details
Modulus of Elasticity val1
Full data access requires a free trial. Sign Up Free
ksi view details
Density 0.283 lb/in³ view details
Poisson Coefficient val1
Full data access requires a free trial. Sign Up Free
view details
Coefficient of Thermal Expansion (CTE) val1
Full data access requires a free trial. Sign Up Free
10-6/°F view details
Coefficient of Thermal Expansion (CTE) val1
Full data access requires a free trial. Sign Up Free
10-6/°F view details
Coefficient of Thermal Expansion (CTE) val1
Full data access requires a free trial. Sign Up Free
10-6/°F view details
Coefficient of Thermal Expansion (CTE) val1
Full data access requires a free trial. Sign Up Free
10-6/°F view details
Thermal Conductivity 8.15 BTU/(h∙ft∙°F) view details
Thermal Conductivity val1
Full data access requires a free trial. Sign Up Free
BTU/(h∙ft∙°F) view details
Thermal Conductivity val1
Full data access requires a free trial. Sign Up Free
BTU/(h∙ft∙°F) view details
Thermal Conductivity val1
Full data access requires a free trial. Sign Up Free
BTU/(h∙ft∙°F) view details
Service Temperature val1
Full data access requires a free trial. Sign Up Free
°F view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.030
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
21.0 – 23.5
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
≤ 1.00
UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Mn
VALUE
val1
Full data access requires a free trial. Sign Up Free
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
Full data access requires a free trial. Sign Up Free
UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
N
VALUE
val1
Full data access requires a free trial. Sign Up Free
UNIT
%
CAS NUMBER
7727-37-9; 17778-88-0
CRITERIA
Ni
VALUE
val1
Full data access requires a free trial. Sign Up Free
UNIT
%
CAS NUMBER
7440-02-0
CRITERIA
P
VALUE
val1
Full data access requires a free trial. Sign Up Free
UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
val1
Full data access requires a free trial. Sign Up Free
UNIT
%
CAS NUMBER
7704-34-9
CRITERIA
Si
VALUE
val1
Full data access requires a free trial. Sign Up Free
UNIT
%
CAS NUMBER
7440-21-3

ASME Boiler and Pressure Vessel Code An International Code Section II - Part A Ferrous Material Specifications / American Society of Mechanical Engineers / 2023

Heat Treatments

  • Heat treatment: 1120°C (2050°F) minimum for sufficient time to heat casting uniformly to temperature and water quench, or the casting may be furnace cooled to 1010°C (1850°F) minimum (15 min), water quench. A rapid cool by other means may be employed in lieu of water quench.