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SAE-AISI T4 Steel vs. SAE-AISI H12 Steel

Both SAE-AISI T4 steel and SAE-AISI H12 steel are iron alloys. They have 77% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T4 steel and the bottom bar is SAE-AISI H12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
75
Tensile Strength: Ultimate (UTS), MPa 800 to 2140
690 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1810
1480
Melting Onset (Solidus), °C 1750
1440
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 21
36
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 55
9.0
Density, g/cm3 9.4
7.9
Embodied Carbon, kg CO2/kg material 8.5
2.9
Embodied Energy, MJ/kg 130
41
Embodied Water, L/kg 120
76

Common Calculations

PREN (Pitting Resistance) 37
12
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 24 to 64
24 to 65
Strength to Weight: Bending, points 20 to 39
22 to 42
Thermal Diffusivity, mm2/s 5.4
9.8
Thermal Shock Resistance, points 24 to 64
22 to 60

Alloy Composition

Carbon (C), % 0.7 to 0.8
0.3 to 0.4
Chromium (Cr), % 3.8 to 4.5
4.8 to 5.5
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 66.3 to 72.3
87.8 to 91.7
Manganese (Mn), % 0.1 to 0.4
0.2 to 0.5
Molybdenum (Mo), % 0.4 to 1.0
1.3 to 1.8
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.4
0.8 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 17.5 to 19
1.0 to 1.7
Vanadium (V), % 0.8 to 1.2
0 to 0.5

Comparable Variants