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AISI 308 Stainless Steel vs. Grade TDSiCr Steel

Both AISI 308 stainless steel and grade TDSiCr steel are iron alloys. They have 69% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AISI 308 stainless steel and the bottom bar is grade TDSiCr steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
590
Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Reduction in Area, % 57
48
Shear Modulus, GPa 78
80
Tensile Strength: Ultimate (UTS), MPa 590
1950

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Mechanical, °C 990
410
Melting Completion (Liquidus), °C 1420
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
46
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 17
2.2
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.2
1.5
Embodied Energy, MJ/kg 46
20
Embodied Water, L/kg 150
48

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
70
Strength to Weight: Bending, points 20
45
Thermal Diffusivity, mm2/s 4.1
12
Thermal Shock Resistance, points 13
58

Alloy Composition

Carbon (C), % 0 to 0.080
0.5 to 0.6
Chromium (Cr), % 19 to 21
0.5 to 0.8
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 64.1 to 71
96.6 to 97.8
Manganese (Mn), % 0 to 2.0
0.5 to 0.9
Nickel (Ni), % 10 to 12
0
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 0.75
1.2 to 1.6
Sulfur (S), % 0 to 0.030
0 to 0.020