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Grade FDSiCr Steel vs. EN 1.4988 Stainless Steel

Both grade FDSiCr steel and EN 1.4988 stainless steel are iron alloys. They have 68% of their average alloy composition in common. There are 25 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 grade FDSiCr steel and the bottom bar is EN 1.4988 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 580
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 1930
640

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Mechanical, °C 410
920
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 48
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
23
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 1.5
6.0
Embodied Energy, MJ/kg 20
89
Embodied Water, L/kg 48
150

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 69
23
Strength to Weight: Bending, points 44
21
Thermal Diffusivity, mm2/s 13
4.0
Thermal Shock Resistance, points 58
14

Alloy Composition

Carbon (C), % 0.5 to 0.6
0.040 to 0.1
Chromium (Cr), % 0.5 to 0.8
15.5 to 17.5
Copper (Cu), % 0 to 0.12
0
Iron (Fe), % 96.5 to 97.8
62.1 to 69.5
Manganese (Mn), % 0.5 to 0.9
0 to 1.5
Molybdenum (Mo), % 0
1.1 to 1.5
Nickel (Ni), % 0
12.5 to 14.5
Niobium (Nb), % 0
0.4 to 1.2
Nitrogen (N), % 0
0.060 to 0.14
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 1.2 to 1.6
0.3 to 0.6
Sulfur (S), % 0 to 0.025
0 to 0.015
Vanadium (V), % 0
0.6 to 0.85