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Grade TDC Steel vs. SAE-AISI 4028 Steel

Both grade TDC steel and SAE-AISI 4028 steel are iron alloys. Their average alloy composition is basically identical. There are 25 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 grade TDC steel and the bottom bar is SAE-AISI 4028 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 510
150 to 190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 1700
490 to 630

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
49
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.5
Embodied Energy, MJ/kg 19
19
Embodied Water, L/kg 47
47

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 60
17 to 22
Strength to Weight: Bending, points 40
18 to 21
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 50
16 to 20

Alloy Composition

Carbon (C), % 0.6 to 0.75
0.25 to 0.3
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 98 to 99.4
98.1 to 98.7
Manganese (Mn), % 0.5 to 1.2
0.7 to 0.9
Molybdenum (Mo), % 0
0.2 to 0.3
Phosphorus (P), % 0 to 0.020
0 to 0.035
Silicon (Si), % 0.1 to 0.35
0.15 to 0.35
Sulfur (S), % 0 to 0.020
0.035 to 0.050