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SAE-AISI T8 Steel vs. AWS E309LMo

Both SAE-AISI T8 steel and AWS E309LMo are iron alloys. They have 64% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T8 steel and the bottom bar is AWS E309LMo.

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
79
Tensile Strength: Ultimate (UTS), MPa 780 to 2140
580

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Melting Completion (Liquidus), °C 1730
1430
Melting Onset (Solidus), °C 1670
1390
Specific Heat Capacity, J/kg-K 420
480
Thermal Conductivity, W/m-K 18
15
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Base Metal Price, % relative 45
22
Density, g/cm3 9.0
7.9
Embodied Carbon, kg CO2/kg material 10
4.2
Embodied Energy, MJ/kg 160
59
Embodied Water, L/kg 120
180

Common Calculations

PREN (Pitting Resistance) 30
32
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 24 to 66
21
Strength to Weight: Bending, points 21 to 41
20
Thermal Diffusivity, mm2/s 4.8
3.9
Thermal Shock Resistance, points 24 to 66
15

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.040
Chromium (Cr), % 3.8 to 4.5
22 to 25
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0 to 0.75
Iron (Fe), % 69.3 to 75.4
53.6 to 63.5
Manganese (Mn), % 0.2 to 0.4
0.5 to 2.5
Molybdenum (Mo), % 0.4 to 1.0
2.0 to 3.0
Nickel (Ni), % 0 to 0.3
12 to 14
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 0.030
Tungsten (W), % 13.3 to 14.8
0
Vanadium (V), % 1.8 to 2.4
0