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SAE-AISI 5140 Steel vs. Grade TDSiCrV Steel

Both SAE-AISI 5140 steel and grade TDSiCrV 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 SAE-AISI 5140 steel and the bottom bar is grade TDSiCrV steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 290
630
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 560 to 970
2100

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 420
420
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 45
47
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
2.3
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
1.9
Embodied Energy, MJ/kg 19
26
Embodied Water, L/kg 49
50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20 to 34
75
Strength to Weight: Bending, points 19 to 28
47
Thermal Diffusivity, mm2/s 12
13
Thermal Shock Resistance, points 16 to 29
63

Alloy Composition

Carbon (C), % 0.38 to 0.43
0.5 to 0.7
Chromium (Cr), % 0.7 to 0.9
0.5 to 1.0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 97.3 to 98.1
96.1 to 97.8
Manganese (Mn), % 0.7 to 0.9
0.4 to 0.9
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0.15 to 0.35
1.2 to 1.7
Sulfur (S), % 0 to 0.040
0 to 0.020
Vanadium (V), % 0
0.1 to 0.25