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AWS E347 vs. SAE-AISI 4320 Steel

Both AWS E347 and SAE-AISI 4320 steel are iron alloys. They have 71% 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 E347 and the bottom bar is SAE-AISI 4320 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
21 to 29
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 580
570 to 790

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
46
Thermal Expansion, µm/m-K 14
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 19
3.4
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.7
1.7
Embodied Energy, MJ/kg 53
22
Embodied Water, L/kg 150
52

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
20 to 28
Strength to Weight: Bending, points 20
19 to 24
Thermal Diffusivity, mm2/s 4.2
13
Thermal Shock Resistance, points 15
19 to 27

Alloy Composition

Carbon (C), % 0 to 0.080
0.17 to 0.22
Chromium (Cr), % 18 to 21
0.4 to 0.6
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 61.9 to 72.5
95.8 to 97
Manganese (Mn), % 0.5 to 2.5
0.45 to 0.65
Molybdenum (Mo), % 0 to 0.75
0.2 to 0.3
Nickel (Ni), % 9.0 to 11
1.7 to 2.0
Niobium (Nb), % 0 to 1.0
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