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SAE-AISI 9254 Steel vs. Grade TDSiCr Steel

Both SAE-AISI 9254 steel and grade TDSiCr 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 9254 steel and the bottom bar is grade TDSiCr steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
590
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
1950

Thermal Properties

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
2.2
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 1.5
1.5
Embodied Energy, MJ/kg 20
20
Embodied Water, L/kg 49
48

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
70
Strength to Weight: Bending, points 22
45
Thermal Diffusivity, mm2/s 12
12
Thermal Shock Resistance, points 20
58

Alloy Composition

Carbon (C), % 0.51 to 0.59
0.5 to 0.6
Chromium (Cr), % 0.6 to 0.8
0.5 to 0.8
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 96.1 to 97.1
96.6 to 97.8
Manganese (Mn), % 0.6 to 0.8
0.5 to 0.9
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 1.2 to 1.6
1.2 to 1.6
Sulfur (S), % 0 to 0.040
0 to 0.020