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ASTM A182 Grade F23 vs. SAE-AISI 4718 Steel

Both ASTM A182 grade F23 and SAE-AISI 4718 steel are iron alloys. They have a very high 96% 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 F23 and the bottom bar is SAE-AISI 4718 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
24
Fatigue Strength, MPa 320
270
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Shear Strength, MPa 360
330
Tensile Strength: Ultimate (UTS), MPa 570
510
Tensile Strength: Yield (Proof), MPa 460
370

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 450
420
Melting Completion (Liquidus), °C 1500
1460
Melting Onset (Solidus), °C 1450
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 41
39
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
3.0
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 2.5
1.6
Embodied Energy, MJ/kg 36
21
Embodied Water, L/kg 59
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
110
Resilience: Unit (Modulus of Resilience), kJ/m3 550
360
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20
18
Strength to Weight: Bending, points 19
18
Thermal Diffusivity, mm2/s 11
10
Thermal Shock Resistance, points 17
17

Alloy Composition

Aluminum (Al), % 0 to 0.030
0
Boron (B), % 0.0010 to 0.0060
0
Carbon (C), % 0.040 to 0.1
0.16 to 0.21
Chromium (Cr), % 1.9 to 2.6
0.35 to 0.55
Iron (Fe), % 93.2 to 96.2
96.3 to 97.4
Manganese (Mn), % 0.1 to 0.6
0.7 to 0.9
Molybdenum (Mo), % 0.050 to 0.3
0.3 to 0.4
Nickel (Ni), % 0 to 0.4
0.9 to 1.2
Niobium (Nb), % 0.020 to 0.080
0
Nitrogen (N), % 0 to 0.015
0
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.5
0.15 to 0.35
Sulfur (S), % 0 to 0.010
0 to 0.040
Titanium (Ti), % 0.0050 to 0.060
0
Tungsten (W), % 1.5 to 1.8
0
Vanadium (V), % 0.2 to 0.3
0