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AWS E2593 vs. AWS E240

Both AWS E2593 and AWS E240 are iron alloys. Both are furnished in the as-welded condition. They have 83% of their average alloy composition in common.

For each property being compared, the top bar is AWS E2593 and the bottom bar is AWS E240.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
17
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 850
770

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Melting Completion (Liquidus), °C 1430
1390
Melting Onset (Solidus), °C 1390
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 14
15

Otherwise Unclassified Properties

Base Metal Price, % relative 22
14
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.2
3.0
Embodied Energy, MJ/kg 59
42
Embodied Water, L/kg 190
160

Common Calculations

PREN (Pitting Resistance) 39
22
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
28
Strength to Weight: Bending, points 25
24
Thermal Diffusivity, mm2/s 4.3
3.9
Thermal Shock Resistance, points 21
19

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.060
Chromium (Cr), % 24 to 27
17 to 19
Copper (Cu), % 1.5 to 3.0
0 to 0.75
Iron (Fe), % 52.7 to 62.5
58.6 to 68.4
Manganese (Mn), % 0.5 to 1.5
10.5 to 13.5
Molybdenum (Mo), % 2.9 to 3.9
0 to 0.75
Nickel (Ni), % 8.5 to 10.5
4.0 to 6.0
Nitrogen (N), % 0.080 to 0.25
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