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ASTM A369 Grade FPB vs. ASTM Grade LC4 Steel

Both ASTM A369 grade FPB and ASTM grade LC4 steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FPB and the bottom bar is ASTM grade LC4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
27
Fatigue Strength, MPa 180
230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 470
570
Tensile Strength: Yield (Proof), MPa 270
310

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
410
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
49
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
4.6
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
1.8
Embodied Energy, MJ/kg 18
24
Embodied Water, L/kg 46
54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
130
Resilience: Unit (Modulus of Resilience), kJ/m3 190
260
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
20
Strength to Weight: Bending, points 17
19
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 15
17

Alloy Composition

Carbon (C), % 0 to 0.3
0 to 0.15
Iron (Fe), % 98.1 to 99.61
93.4 to 95.5
Manganese (Mn), % 0.29 to 1.1
0.5 to 0.8
Nickel (Ni), % 0
4.0 to 5.0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.1 to 0.5
0 to 0.6
Sulfur (S), % 0 to 0.035
0 to 0.045