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SAE-AISI T8 Steel vs. EN 1.4903 Stainless Steel

Both SAE-AISI T8 steel and EN 1.4903 stainless steel are iron alloys. They have 78% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T8 steel and the bottom bar is EN 1.4903 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 78
75
Tensile Strength: Ultimate (UTS), MPa 780 to 2140
670 to 680

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1730
1460
Melting Onset (Solidus), °C 1670
1420
Specific Heat Capacity, J/kg-K 420
470
Thermal Conductivity, W/m-K 18
26
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 45
7.0
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 10
2.6
Embodied Energy, MJ/kg 160
36
Embodied Water, L/kg 120
88

Common Calculations

PREN (Pitting Resistance) 30
13
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 24 to 66
24
Strength to Weight: Bending, points 21 to 41
22
Thermal Diffusivity, mm2/s 4.8
7.0
Thermal Shock Resistance, points 24 to 66
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0.75 to 0.85
0.080 to 0.12
Chromium (Cr), % 3.8 to 4.5
8.0 to 9.5
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0 to 0.3
Iron (Fe), % 69.3 to 75.4
87.1 to 90.5
Manganese (Mn), % 0.2 to 0.4
0.3 to 0.6
Molybdenum (Mo), % 0.4 to 1.0
0.85 to 1.1
Nickel (Ni), % 0 to 0.3
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 13.3 to 14.8
0
Vanadium (V), % 1.8 to 2.4
0.18 to 0.25