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SAE-AISI T8 Steel vs. ASTM A387 Grade 11 Steel

Both SAE-AISI T8 steel and ASTM A387 grade 11 steel are iron alloys. They have 75% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T8 steel and the bottom bar is ASTM A387 grade 11 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 780 to 2140
500 to 600

Thermal Properties

Latent Heat of Fusion, J/g 250
260
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
39
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 45
2.9
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 10
1.6
Embodied Energy, MJ/kg 160
21
Embodied Water, L/kg 120
53

Common Calculations

PREN (Pitting Resistance) 30
3.1
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 24 to 66
18 to 21
Strength to Weight: Bending, points 21 to 41
18 to 20
Thermal Diffusivity, mm2/s 4.8
11
Thermal Shock Resistance, points 24 to 66
15 to 18

Alloy Composition

Carbon (C), % 0.75 to 0.85
0.050 to 0.17
Chromium (Cr), % 3.8 to 4.5
1.0 to 1.5
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 69.3 to 75.4
96.2 to 97.6
Manganese (Mn), % 0.2 to 0.4
0.4 to 0.65
Molybdenum (Mo), % 0.4 to 1.0
0.45 to 0.65
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.4
0.5 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 13.3 to 14.8
0
Vanadium (V), % 1.8 to 2.4
0

Comparable Variants