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SAE-AISI 4621 Steel vs. AWS E330

Both SAE-AISI 4621 steel and AWS E330 are iron alloys. They have 50% 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 SAE-AISI 4621 steel and the bottom bar is AWS E330.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 27
29
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 500
580

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1350
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 46
12
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 3.3
31
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 1.6
5.4
Embodied Energy, MJ/kg 22
75
Embodied Water, L/kg 50
180

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
20
Strength to Weight: Bending, points 18
19
Thermal Diffusivity, mm2/s 12
3.2
Thermal Shock Resistance, points 15
16

Alloy Composition

Carbon (C), % 0.18 to 0.23
0.18 to 0.25
Chromium (Cr), % 0
14 to 17
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 96.1 to 97.1
40.7 to 51.8
Manganese (Mn), % 0.7 to 0.9
1.0 to 2.5
Molybdenum (Mo), % 0.2 to 0.3
0 to 0.75
Nickel (Ni), % 1.7 to 2.0
33 to 37
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030