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SAE-AISI 9254 Steel vs. Grade TDC Steel

Both SAE-AISI 9254 steel and grade TDC steel are iron alloys. They have a very high 98% of their average alloy composition in common. 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 9254 steel and the bottom bar is grade TDC steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
510
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
80
Tensile Strength: Ultimate (UTS), MPa 660
1700

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 410
400
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 46
51
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
1.9
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.4
Embodied Energy, MJ/kg 20
19
Embodied Water, L/kg 49
47

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
60
Strength to Weight: Bending, points 22
40
Thermal Diffusivity, mm2/s 12
14
Thermal Shock Resistance, points 20
50

Alloy Composition

Carbon (C), % 0.51 to 0.59
0.6 to 0.75
Chromium (Cr), % 0.6 to 0.8
0 to 0.3
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 96.1 to 97.1
98 to 99.4
Manganese (Mn), % 0.6 to 0.8
0.5 to 1.2
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 1.2 to 1.6
0.1 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.020