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303 Stainless Steel Mechanical Properties


AISI Type 303 Se Stainless Steel, cold drawn, bar, tested at RT

COMPONENT
WT. %
C
Max 0.15
Cr
18
Fe
69
Mn
Max 2
Ni
9
P
Max 0.2
S
Max 0.06
Se
Max 0.15
Si
Max 1
 
PHYSICAL PROPERTIES
METRIC
ENGLISH
COMMENTS
Density
8 g/cc
0.289 lb/in³
 
 
MECHANICAL PROPERTIES
METRIC
ENGLISH
COMMENTS
Hardness, Brinell
228
228
 
Hardness, Knoop
251
251
Converted from Brinell hardness
Hardness,
Rockwell B
96
96
Converted from Brinell hardness
Hardness,
Rockwell C
19
19
Converted from Brinell hardness.
Value below normal HRC range, for comparison only
Hardness, Vickers
240
240
Converted from Brinell hardness
Tensile Strength, Ultimate
690 MPa
100000 psi
 
Tensile Strength, Yield
415 MPa
60200 psi
at 0.2% offset
Elongation at Break
40%
40%
in 50 mm
Modulus of Elasticity
193 GPa
28000 ksi
tension
Poisson's Ratio
0.25
0.25
Calculated
Shear Modulus
77.2 GPa
11200 ksi
 
 
ELECTRICAL PROPERTIES
METRIC
ENGLISH
COMMENTS
Electrical Resistivity
7.2e-005
ohm-cm
7.2e-005
ohm-cm
 
 
THERMAL PROPERTIES
METRIC
ENGLISH
COMMENTS
CTE, linear 20°C
17.2 µm/m-°C
9.56  µin/in-°F
from 0-100°C
CTE, linear 250°C
17.8  µm/m-°C
9.89  µin/in-°F
at 0-315°C (32-600°F)
CTE, linear 500°C
18.4  µm/m-°C
10.2  µin/in-°F
at 0-540°C, 18.7 µm/m-C
at 0-650°C
Specific Heat Capacity
0.5 J/g-°C
0.12  BTU/lb-°F
from 0-100°C (32-212°F)
Thermal Conductivity
16.2  W/m-K
112  BTU-in
/hr-ft²-°F
at 100°C (212°F), 21.5 W/m-K at 500°C (930°F)
Melting Point
1400 - 1420 °C
2550 - 2590 °F
 
Solidus
1400 °C
2550 °F
 
Liquidus
1420 °C
2590 °F