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AWS E2593 vs. SAE-AISI 4340 Steel

Both AWS E2593 and SAE-AISI 4340 steel are iron alloys. They have 62% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is AWS E2593 and the bottom bar is SAE-AISI 4340 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
12 to 22
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 850
690 to 1280

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
44
Thermal Expansion, µm/m-K 14
13

Otherwise Unclassified Properties

Base Metal Price, % relative 22
3.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.2
1.7
Embodied Energy, MJ/kg 59
22
Embodied Water, L/kg 190
53

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
24 to 45
Strength to Weight: Bending, points 25
22 to 33
Thermal Diffusivity, mm2/s 4.3
12
Thermal Shock Resistance, points 21
20 to 38

Alloy Composition

Carbon (C), % 0 to 0.040
0.38 to 0.43
Chromium (Cr), % 24 to 27
0.7 to 0.9
Copper (Cu), % 1.5 to 3.0
0
Iron (Fe), % 52.7 to 62.5
95.1 to 96.3
Manganese (Mn), % 0.5 to 1.5
0.6 to 0.8
Molybdenum (Mo), % 2.9 to 3.9
0.2 to 0.3
Nickel (Ni), % 8.5 to 10.5
1.7 to 2.0
Nitrogen (N), % 0.080 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040