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SAE-AISI 4718 Steel vs. ASTM A182 Grade F11 Class 2

Both SAE-AISI 4718 steel and ASTM A182 grade F11 class 2 are iron alloys. Both are furnished in the annealed condition. They have a very high 99% 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 4718 steel and the bottom bar is ASTM A182 grade F11 class 2.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 24
22
Fatigue Strength, MPa 270
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 330
340
Tensile Strength: Ultimate (UTS), MPa 510
540
Tensile Strength: Yield (Proof), MPa 370
310

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 420
430
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 39
39
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 3.0
2.9
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.6
Embodied Energy, MJ/kg 21
21
Embodied Water, L/kg 51
53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
100
Resilience: Unit (Modulus of Resilience), kJ/m3 360
260
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
19
Strength to Weight: Bending, points 18
19
Thermal Diffusivity, mm2/s 10
11
Thermal Shock Resistance, points 17
16

Alloy Composition

Carbon (C), % 0.16 to 0.21
0.1 to 0.2
Chromium (Cr), % 0.35 to 0.55
1.0 to 1.5
Iron (Fe), % 96.3 to 97.4
95.8 to 97.7
Manganese (Mn), % 0.7 to 0.9
0.3 to 0.8
Molybdenum (Mo), % 0.3 to 0.4
0.44 to 0.65
Nickel (Ni), % 0.9 to 1.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0.5 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.040