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Grade FDSiCr Steel vs. SAE-AISI 50B50 Steel

Both grade FDSiCr steel and SAE-AISI 50B50 steel are iron alloys. Their average alloy composition is basically identical. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is grade FDSiCr steel and the bottom bar is SAE-AISI 50B50 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 580
180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 1930
590

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 410
410
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 48
45
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
2.0
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.4
Embodied Energy, MJ/kg 20
19
Embodied Water, L/kg 48
48

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 69
21
Strength to Weight: Bending, points 44
20
Thermal Diffusivity, mm2/s 13
12
Thermal Shock Resistance, points 58
17

Alloy Composition

Boron (B), % 0
0.00050 to 0.0030
Carbon (C), % 0.5 to 0.6
0.48 to 0.53
Chromium (Cr), % 0.5 to 0.8
0.4 to 0.6
Copper (Cu), % 0 to 0.12
0
Iron (Fe), % 96.5 to 97.8
97.4 to 98.2
Manganese (Mn), % 0.5 to 0.9
0.75 to 1.0
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 1.2 to 1.6
0.15 to 0.35
Sulfur (S), % 0 to 0.025
0 to 0.040