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AWS E240 vs. AWS E2594

Both AWS E240 and AWS E2594 are iron alloys. Both are furnished in the as-welded condition. They have 85% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AWS E240 and the bottom bar is AWS E2594.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 17
17
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
81
Tensile Strength: Ultimate (UTS), MPa 770
850

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Melting Completion (Liquidus), °C 1390
1440
Melting Onset (Solidus), °C 1350
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 15
14

Otherwise Unclassified Properties

Base Metal Price, % relative 14
22
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.0
4.3
Embodied Energy, MJ/kg 42
60
Embodied Water, L/kg 160
190

Common Calculations

PREN (Pitting Resistance) 22
43
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
30
Strength to Weight: Bending, points 24
25
Thermal Diffusivity, mm2/s 3.9
4.3
Thermal Shock Resistance, points 19
21

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.040
Chromium (Cr), % 17 to 19
24 to 27
Copper (Cu), % 0 to 0.75
0 to 0.75
Iron (Fe), % 58.6 to 68.4
53.8 to 63.8
Manganese (Mn), % 10.5 to 13.5
0.5 to 2.0
Molybdenum (Mo), % 0 to 0.75
3.5 to 4.5
Nickel (Ni), % 4.0 to 6.0
8.0 to 10.5
Nitrogen (N), % 0.1 to 0.3
0.2 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