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ASTM A369 Grade FPA vs. SAE-AISI 1012 Steel

Both ASTM A369 grade FPA and SAE-AISI 1012 steel are iron alloys. Their average alloy composition is basically identical. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FPA and the bottom bar is SAE-AISI 1012 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
100 to 110
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 27
21 to 31
Fatigue Strength, MPa 180
150 to 230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 240
230 to 250
Tensile Strength: Ultimate (UTS), MPa 380
360 to 400
Tensile Strength: Yield (Proof), MPa 240
200 to 330

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
53
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
6.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
7.9

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
1.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 18
18
Embodied Water, L/kg 46
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
80 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 150
110 to 300
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 13
13 to 14
Strength to Weight: Bending, points 15
14 to 15
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 12
11 to 13

Alloy Composition

Carbon (C), % 0 to 0.25
0.1 to 0.15
Iron (Fe), % 98.3 to 99.63
99.16 to 99.6
Manganese (Mn), % 0.27 to 0.93
0.3 to 0.6
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.1 to 0.5
0
Sulfur (S), % 0 to 0.035
0 to 0.050