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Grade FDSiCr Steel vs. S35125 Stainless Steel

Both grade FDSiCr steel and S35125 stainless steel are iron alloys. They have 43% of their average alloy composition in common. There are 24 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 FDSiCr steel and the bottom bar is S35125 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 80
78
Tensile Strength: Ultimate (UTS), MPa 1930
540

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Mechanical, °C 410
1100
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 48
12
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
36
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 1.5
6.4
Embodied Energy, MJ/kg 20
89
Embodied Water, L/kg 48
210

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 69
19
Strength to Weight: Bending, points 44
18
Thermal Diffusivity, mm2/s 13
3.1
Thermal Shock Resistance, points 58
12

Alloy Composition

Carbon (C), % 0.5 to 0.6
0 to 0.1
Chromium (Cr), % 0.5 to 0.8
20 to 23
Copper (Cu), % 0 to 0.12
0
Iron (Fe), % 96.5 to 97.8
36.2 to 45.8
Manganese (Mn), % 0.5 to 0.9
1.0 to 1.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
31 to 35
Niobium (Nb), % 0
0.25 to 0.6
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 1.2 to 1.6
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.015