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SAE-AISI 1108 Steel vs. ASTM A369 Grade FP12

Both SAE-AISI 1108 steel and ASTM A369 grade FP12 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 SAE-AISI 1108 steel and the bottom bar is ASTM A369 grade FP12.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110 to 140
140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23 to 34
20
Fatigue Strength, MPa 170 to 260
170
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 250 to 280
300
Tensile Strength: Ultimate (UTS), MPa 380 to 440
470
Tensile Strength: Yield (Proof), MPa 220 to 360
250

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
430
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
45
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
2.8
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.4
1.6
Embodied Energy, MJ/kg 18
21
Embodied Water, L/kg 46
52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95 to 110
81
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 340
160
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 13 to 16
17
Strength to Weight: Bending, points 15 to 16
17
Thermal Diffusivity, mm2/s 14
12
Thermal Shock Resistance, points 12 to 14
14

Alloy Composition

Carbon (C), % 0.080 to 0.13
0.050 to 0.15
Chromium (Cr), % 0
0.8 to 1.3
Iron (Fe), % 98.9 to 99.24
96.8 to 98.4
Manganese (Mn), % 0.6 to 0.8
0.3 to 0.61
Molybdenum (Mo), % 0
0.44 to 0.65
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0.080 to 0.13
0 to 0.025