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Grade TDSiCr Steel vs. S38815 Stainless Steel

Both grade TDSiCr steel and S38815 stainless steel are iron alloys. They have 64% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is grade TDSiCr steel and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 590
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
74
Tensile Strength: Ultimate (UTS), MPa 1950
610

Thermal Properties

Latent Heat of Fusion, J/g 270
370
Maximum Temperature: Mechanical, °C 410
860
Melting Completion (Liquidus), °C 1440
1360
Melting Onset (Solidus), °C 1400
1310
Specific Heat Capacity, J/kg-K 480
500
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
19
Density, g/cm3 7.7
7.5
Embodied Carbon, kg CO2/kg material 1.5
3.8
Embodied Energy, MJ/kg 20
54
Embodied Water, L/kg 48
140

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 70
22
Strength to Weight: Bending, points 45
21
Thermal Shock Resistance, points 58
15

Alloy Composition

Aluminum (Al), % 0
0 to 0.3
Carbon (C), % 0.5 to 0.6
0 to 0.030
Chromium (Cr), % 0.5 to 0.8
13 to 15
Copper (Cu), % 0 to 0.1
0.75 to 1.5
Iron (Fe), % 96.6 to 97.8
56.1 to 67
Manganese (Mn), % 0.5 to 0.9
0 to 2.0
Molybdenum (Mo), % 0
0.75 to 1.5
Nickel (Ni), % 0
13 to 17
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 1.2 to 1.6
5.5 to 6.5
Sulfur (S), % 0 to 0.020
0 to 0.020