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Grade TDC Steel vs. S17400 Stainless Steel

Both grade TDC steel and S17400 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is grade TDC steel and the bottom bar is S17400 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 510
280 to 440
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.28
Reduction in Area, % 50
40 to 62
Shear Modulus, GPa 80
75
Tensile Strength: Ultimate (UTS), MPa 1700
910 to 1390

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
850
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
17
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
14
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
2.7
Embodied Energy, MJ/kg 19
39
Embodied Water, L/kg 47
130

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 60
32 to 49
Strength to Weight: Bending, points 40
27 to 35
Thermal Diffusivity, mm2/s 14
4.5
Thermal Shock Resistance, points 50
30 to 46

Alloy Composition

Carbon (C), % 0.6 to 0.75
0 to 0.070
Chromium (Cr), % 0 to 0.3
15 to 17
Copper (Cu), % 0 to 0.1
3.0 to 5.0
Iron (Fe), % 98 to 99.4
70.4 to 78.9
Manganese (Mn), % 0.5 to 1.2
0 to 1.0
Nickel (Ni), % 0
3.0 to 5.0
Niobium (Nb), % 0
0.15 to 0.45
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0.1 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030