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ASTM A369 Grade FP12 vs. SAE-AISI 1008 Steel

Both ASTM A369 grade FP12 and SAE-AISI 1008 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 31 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 FP12 and the bottom bar is SAE-AISI 1008 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
93 to 100
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
22 to 33
Fatigue Strength, MPa 170
150 to 220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 300
220 to 230
Tensile Strength: Ultimate (UTS), MPa 470
330 to 370
Tensile Strength: Yield (Proof), MPa 250
190 to 310

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 430
400
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1430
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
62
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
6.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
7.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
1.8
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.6
1.4
Embodied Energy, MJ/kg 21
18
Embodied Water, L/kg 52
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
78 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 160
92 to 260
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
12 to 13
Strength to Weight: Bending, points 17
13 to 15
Thermal Diffusivity, mm2/s 12
17
Thermal Shock Resistance, points 14
10 to 12

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.1
Chromium (Cr), % 0.8 to 1.3
0
Iron (Fe), % 96.8 to 98.4
99.31 to 99.7
Manganese (Mn), % 0.3 to 0.61
0.3 to 0.5
Molybdenum (Mo), % 0.44 to 0.65
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.025
0 to 0.050