MakeItFrom.com
Menu (ESC)

SAE-AISI T8 Steel vs. S31730 Stainless Steel

Both SAE-AISI T8 steel and S31730 stainless steel are iron alloys. They have 62% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T8 steel and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 780 to 2140
540

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Melting Completion (Liquidus), °C 1730
1430
Melting Onset (Solidus), °C 1670
1390
Specific Heat Capacity, J/kg-K 420
470
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 45
24
Density, g/cm3 9.0
8.0
Embodied Carbon, kg CO2/kg material 10
4.6
Embodied Energy, MJ/kg 160
63
Embodied Water, L/kg 120
180

Common Calculations

PREN (Pitting Resistance) 30
30
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 24 to 66
19
Strength to Weight: Bending, points 21 to 41
18
Thermal Shock Resistance, points 24 to 66
12

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.030
Chromium (Cr), % 3.8 to 4.5
17 to 19
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
4.0 to 5.0
Iron (Fe), % 69.3 to 75.4
52.4 to 61
Manganese (Mn), % 0.2 to 0.4
0 to 2.0
Molybdenum (Mo), % 0.4 to 1.0
3.0 to 4.0
Nickel (Ni), % 0 to 0.3
15 to 16.5
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 13.3 to 14.8
0
Vanadium (V), % 1.8 to 2.4
0