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ASTM A182 Grade F1 vs. SAE-AISI 1055 Steel

Both ASTM A182 grade F1 and SAE-AISI 1055 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is ASTM A182 grade F1 and the bottom bar is SAE-AISI 1055 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
220
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
11 to 14
Fatigue Strength, MPa 220
260 to 390
Poisson's Ratio 0.29
0.29
Reduction in Area, % 34
34 to 45
Shear Modulus, GPa 73
72
Shear Strength, MPa 340
440 to 450
Tensile Strength: Ultimate (UTS), MPa 540
730 to 750
Tensile Strength: Yield (Proof), MPa 310
400 to 630

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
400
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 50
51
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
11
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
12

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
1.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.4
Embodied Energy, MJ/kg 20
18
Embodied Water, L/kg 48
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
80 to 85
Resilience: Unit (Modulus of Resilience), kJ/m3 260
440 to 1070
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
26
Strength to Weight: Bending, points 19
23
Thermal Diffusivity, mm2/s 13
14
Thermal Shock Resistance, points 16
23 to 24

Alloy Composition

Carbon (C), % 0 to 0.28
0.5 to 0.6
Iron (Fe), % 97.7 to 98.8
98.4 to 98.9
Manganese (Mn), % 0.6 to 0.9
0.6 to 0.9
Molybdenum (Mo), % 0.44 to 0.65
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.045
0 to 0.050