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AWS E330 vs. SAE-AISI 4720 Steel

Both AWS E330 and SAE-AISI 4720 steel are iron alloys. They have 49% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is AWS E330 and the bottom bar is SAE-AISI 4720 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 29
25
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 580
490

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 12
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 31
2.9
Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 5.4
1.6
Embodied Energy, MJ/kg 75
21
Embodied Water, L/kg 180
50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20
17
Strength to Weight: Bending, points 19
18
Thermal Diffusivity, mm2/s 3.2
10
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0.18 to 0.25
0.17 to 0.22
Chromium (Cr), % 14 to 17
0.35 to 0.55
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 40.7 to 51.8
96.7 to 97.8
Manganese (Mn), % 1.0 to 2.5
0.5 to 0.7
Molybdenum (Mo), % 0 to 0.75
0.15 to 0.25
Nickel (Ni), % 33 to 37
0.9 to 1.2
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