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SAE-AISI D4 Steel vs. SAE-AISI T4 Steel

Both SAE-AISI D4 steel and SAE-AISI T4 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 (7, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI D4 steel and the bottom bar is SAE-AISI T4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 74
80
Tensile Strength: Ultimate (UTS), MPa 760 to 2060
800 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1430
1810
Melting Onset (Solidus), °C 1380
1750
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 31
21
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
55
Density, g/cm3 7.7
9.4
Embodied Carbon, kg CO2/kg material 3.3
8.5
Embodied Energy, MJ/kg 49
130
Embodied Water, L/kg 100
120

Common Calculations

PREN (Pitting Resistance) 15
37
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 27 to 75
24 to 64
Strength to Weight: Bending, points 24 to 47
20 to 39
Thermal Diffusivity, mm2/s 8.3
5.4
Thermal Shock Resistance, points 23 to 63
24 to 64

Alloy Composition

Carbon (C), % 2.1 to 2.4
0.7 to 0.8
Chromium (Cr), % 11 to 13
3.8 to 4.5
Cobalt (Co), % 0
4.3 to 5.8
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 80.6 to 86.3
66.3 to 72.3
Manganese (Mn), % 0 to 0.6
0.1 to 0.4
Molybdenum (Mo), % 0.7 to 1.2
0.4 to 1.0
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.6
0.2 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
17.5 to 19
Vanadium (V), % 0 to 1.0
0.8 to 1.2

Comparable Variants