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SAE-AISI T2 Steel vs. ASTM A387 Grade 12 Steel

Both SAE-AISI T2 steel and ASTM A387 grade 12 steel are iron alloys. They have 76% 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 T2 steel and the bottom bar is ASTM A387 grade 12 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 79
73
Tensile Strength: Ultimate (UTS), MPa 780 to 2150
470 to 520

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Melting Completion (Liquidus), °C 1820
1470
Melting Onset (Solidus), °C 1760
1420
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 19
44
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 46
2.8
Density, g/cm3 9.3
7.8
Embodied Carbon, kg CO2/kg material 11
1.6
Embodied Energy, MJ/kg 170
21
Embodied Water, L/kg 98
51

Common Calculations

PREN (Pitting Resistance) 36
2.7
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 23 to 64
16 to 18
Strength to Weight: Bending, points 20 to 40
17 to 18
Thermal Diffusivity, mm2/s 4.9
12
Thermal Shock Resistance, points 23 to 65
14 to 15

Alloy Composition

Carbon (C), % 0.8 to 0.9
0.050 to 0.17
Chromium (Cr), % 3.8 to 4.5
0.8 to 1.2
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 70.8 to 75.8
97 to 98.2
Manganese (Mn), % 0.2 to 0.4
0.4 to 0.65
Molybdenum (Mo), % 0 to 1.0
0.45 to 0.6
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.4
0.15 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 17.5 to 19
0
Vanadium (V), % 1.8 to 2.4
0

Comparable Variants