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Grade FDSiCr Steel vs. S21603 Stainless Steel

Both grade FDSiCr steel and S21603 stainless steel are iron alloys. They have 64% of their average alloy composition in common. There are 22 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 FDSiCr steel and the bottom bar is S21603 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 580
200
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Reduction in Area, % 42
57
Shear Modulus, GPa 80
79
Tensile Strength: Ultimate (UTS), MPa 1930
690

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Mechanical, °C 410
990
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 13
17

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
17
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 1.5
3.6
Embodied Energy, MJ/kg 20
50
Embodied Water, L/kg 48
160

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 69
25
Strength to Weight: Bending, points 44
22
Thermal Shock Resistance, points 58
15

Alloy Composition

Carbon (C), % 0.5 to 0.6
0 to 0.030
Chromium (Cr), % 0.5 to 0.8
17.5 to 22
Copper (Cu), % 0 to 0.12
0
Iron (Fe), % 96.5 to 97.8
57.6 to 67.8
Manganese (Mn), % 0.5 to 0.9
7.5 to 9.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
5.0 to 7.0
Nitrogen (N), % 0
0.25 to 0.5
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 1.2 to 1.6
0 to 0.75
Sulfur (S), % 0 to 0.025
0 to 0.030