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AWS E318 vs. SAE-AISI 1049 Steel

Both AWS E318 and SAE-AISI 1049 steel are iron alloys. They have 64% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AWS E318 and the bottom bar is SAE-AISI 1049 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
11 to 17
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
72
Tensile Strength: Ultimate (UTS), MPa 620
680 to 750

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
51
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 23
1.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.4
1.4
Embodied Energy, MJ/kg 62
18
Embodied Water, L/kg 160
46

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
24 to 27
Strength to Weight: Bending, points 20
22 to 23
Thermal Diffusivity, mm2/s 4.0
14
Thermal Shock Resistance, points 16
22 to 24

Alloy Composition

Carbon (C), % 0 to 0.080
0.46 to 0.53
Chromium (Cr), % 17 to 20
0
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 57.6 to 69.5
98.5 to 98.9
Manganese (Mn), % 0.5 to 2.5
0.6 to 0.9
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 11 to 14
0
Niobium (Nb), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0 to 0.050