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AWS E240 vs. AWS E219

Both AWS E240 and AWS E219 are iron alloys. Both are furnished in the as-welded condition. They have a very high 97% of their average alloy composition in common.

For each property being compared, the top bar is AWS E240 and the bottom bar is AWS E219.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
17
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 770
690

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Melting Completion (Liquidus), °C 1390
1400
Melting Onset (Solidus), °C 1350
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 15
15

Otherwise Unclassified Properties

Base Metal Price, % relative 14
15
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.0
3.1
Embodied Energy, MJ/kg 42
44
Embodied Water, L/kg 160
160

Common Calculations

PREN (Pitting Resistance) 22
25
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
25
Strength to Weight: Bending, points 24
23
Thermal Diffusivity, mm2/s 3.9
3.8
Thermal Shock Resistance, points 19
17

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.060
Chromium (Cr), % 17 to 19
19 to 21.5
Copper (Cu), % 0 to 0.75
0 to 0.75
Iron (Fe), % 58.6 to 68.4
58.6 to 67.4
Manganese (Mn), % 10.5 to 13.5
8.0 to 10
Molybdenum (Mo), % 0 to 0.75
0 to 0.75
Nickel (Ni), % 4.0 to 6.0
5.5 to 7.0
Nitrogen (N), % 0.1 to 0.3
0.1 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030