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ASTM A182 Grade F2 vs. SAE-AISI 4140 Steel

Both ASTM A182 grade F2 and SAE-AISI 4140 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 (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A182 grade F2 and the bottom bar is SAE-AISI 4140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
200 to 310
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23
11 to 26
Fatigue Strength, MPa 220
360 to 650
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 350
410 to 660
Tensile Strength: Ultimate (UTS), MPa 550
690 to 1080
Tensile Strength: Yield (Proof), MPa 310
590 to 990

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
420
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 46
43
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.7
2.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.5
Embodied Energy, MJ/kg 21
20
Embodied Water, L/kg 50
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
74 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 250
920 to 2590
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20
25 to 38
Strength to Weight: Bending, points 19
22 to 30
Thermal Diffusivity, mm2/s 12
12
Thermal Shock Resistance, points 16
20 to 32

Alloy Composition

Carbon (C), % 0.050 to 0.21
0.38 to 0.43
Chromium (Cr), % 0.5 to 0.81
0.8 to 1.1
Iron (Fe), % 96.9 to 98.6
96.8 to 97.8
Manganese (Mn), % 0.3 to 0.8
0.75 to 1.0
Molybdenum (Mo), % 0.44 to 0.65
0.15 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0.1 to 0.6
0.15 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.040