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ASTM A369 Grade FPB vs. SAE-AISI 5160 Steel

Both ASTM A369 grade FPB and SAE-AISI 5160 steel are iron alloys. They have a very high 99% of their average alloy composition in common.

For each property being compared, the top bar is ASTM A369 grade FPB and the bottom bar is SAE-AISI 5160 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
200 to 340
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
12 to 18
Fatigue Strength, MPa 180
180 to 650
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 290
390 to 700
Tensile Strength: Ultimate (UTS), MPa 470
660 to 1150
Tensile Strength: Yield (Proof), MPa 270
280 to 1010

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
420
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
43
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 18
19
Embodied Water, L/kg 46
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
73 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 190
200 to 2700
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
23 to 41
Strength to Weight: Bending, points 17
22 to 31
Thermal Diffusivity, mm2/s 14
12
Thermal Shock Resistance, points 15
19 to 34

Alloy Composition

Carbon (C), % 0 to 0.3
0.56 to 0.61
Chromium (Cr), % 0
0.7 to 0.9
Iron (Fe), % 98.1 to 99.61
97.1 to 97.8
Manganese (Mn), % 0.29 to 1.1
0.75 to 1.0
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0.1 to 0.5
0.15 to 0.35
Sulfur (S), % 0 to 0.035
0 to 0.040