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ASTM A182 Grade F5a vs. SAE-AISI 8642 Steel

Both ASTM A182 grade F5a and SAE-AISI 8642 steel are iron alloys. They have a very high 95% 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 A182 grade F5a and the bottom bar is SAE-AISI 8642 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 25
23
Fatigue Strength, MPa 380
270
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Shear Strength, MPa 450
370
Tensile Strength: Ultimate (UTS), MPa 710
580
Tensile Strength: Yield (Proof), MPa 520
380

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 510
410
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 40
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 9.4
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 4.5
2.6
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.8
1.5
Embodied Energy, MJ/kg 24
20
Embodied Water, L/kg 69
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
120
Resilience: Unit (Modulus of Resilience), kJ/m3 700
390
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
20
Strength to Weight: Bending, points 23
20
Thermal Diffusivity, mm2/s 11
10
Thermal Shock Resistance, points 20
17

Alloy Composition

Carbon (C), % 0 to 0.25
0.4 to 0.45
Chromium (Cr), % 4.0 to 6.0
0.4 to 0.6
Iron (Fe), % 91.4 to 95.6
96.6 to 97.8
Manganese (Mn), % 0 to 0.6
0.75 to 1.0
Molybdenum (Mo), % 0.44 to 0.65
0.15 to 0.25
Nickel (Ni), % 0 to 0.5
0.4 to 0.7
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 0.5
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040