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ASTM A369 Grade FPB vs. Grade TDSiCr Steel

Both ASTM A369 grade FPB and grade TDSiCr steel are iron alloys. They have a very high 98% of their average alloy composition in common. 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 ASTM A369 grade FPB and the bottom bar is grade TDSiCr steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
590
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 470
1950

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
410
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 52
46
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
2.2
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
1.5
Embodied Energy, MJ/kg 18
20
Embodied Water, L/kg 46
48

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
70
Strength to Weight: Bending, points 17
45
Thermal Diffusivity, mm2/s 14
12
Thermal Shock Resistance, points 15
58

Alloy Composition

Carbon (C), % 0 to 0.3
0.5 to 0.6
Chromium (Cr), % 0
0.5 to 0.8
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 98.1 to 99.61
96.6 to 97.8
Manganese (Mn), % 0.29 to 1.1
0.5 to 0.9
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0.1 to 0.5
1.2 to 1.6
Sulfur (S), % 0 to 0.035
0 to 0.020