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SAE-AISI T8 Steel vs. AWS E630

Both SAE-AISI T8 steel and AWS E630 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 (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 E630.

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
76
Tensile Strength: Ultimate (UTS), MPa 780 to 2140
1040

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Melting Completion (Liquidus), °C 1730
1430
Melting Onset (Solidus), °C 1670
1380
Specific Heat Capacity, J/kg-K 420
470
Thermal Conductivity, W/m-K 18
17
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Base Metal Price, % relative 45
14
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 10
2.8
Embodied Energy, MJ/kg 160
40
Embodied Water, L/kg 120
140

Common Calculations

PREN (Pitting Resistance) 30
18
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 24 to 66
37
Strength to Weight: Bending, points 21 to 41
29
Thermal Diffusivity, mm2/s 4.8
4.5
Thermal Shock Resistance, points 24 to 66
28

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.050
Chromium (Cr), % 3.8 to 4.5
16 to 16.8
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
3.3 to 4.0
Iron (Fe), % 69.3 to 75.4
71.6 to 75.9
Manganese (Mn), % 0.2 to 0.4
0.25 to 0.75
Molybdenum (Mo), % 0.4 to 1.0
0 to 0.75
Nickel (Ni), % 0 to 0.3
4.5 to 5.0
Niobium (Nb), % 0
0.15 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.4
0 to 0.75
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