AWS E240 vs. AWS E2593

Both AWS E240 and AWS E2593 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 E240 and the bottom bar is AWS E2593.

AWS E240 (W32410) Weld Metal AWS E2593 (W39593) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		200
Elastic (Young's, Tensile) Modulus, GPa		200

Elongation at Break, %		17
Elongation at Break, %		17

Poisson's Ratio		0.28
Poisson's Ratio		0.27

Shear Modulus, GPa		77
Shear Modulus, GPa		80

Tensile Strength: Ultimate (UTS), MPa		770
Tensile Strength: Ultimate (UTS), MPa		850

Thermal Properties

Latent Heat of Fusion, J/g		290
Latent Heat of Fusion, J/g		300

Melting Completion (Liquidus), °C		1390
Melting Completion (Liquidus), °C		1430

Melting Onset (Solidus), °C		1350
Melting Onset (Solidus), °C		1390

Specific Heat Capacity, J/kg-K		480
Specific Heat Capacity, J/kg-K		470

Thermal Conductivity, W/m-K		15
Thermal Conductivity, W/m-K		16

Thermal Expansion, µm/m-K		15
Thermal Expansion, µm/m-K		14

Otherwise Unclassified Properties

Base Metal Price, % relative		14
Base Metal Price, % relative		22

Density, g/cm³		7.7
Density, g/cm³		7.8

Embodied Carbon, kg CO₂/kg material		3.0
Embodied Carbon, kg CO₂/kg material		4.2

Embodied Energy, MJ/kg		42
Embodied Energy, MJ/kg		59

Embodied Water, L/kg		160
Embodied Water, L/kg		190

Common Calculations

PREN (Pitting Resistance)		22
PREN (Pitting Resistance)		39

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		14

Stiffness to Weight: Bending, points		25
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		28
Strength to Weight: Axial, points		30

Strength to Weight: Bending, points		24
Strength to Weight: Bending, points		25

Thermal Diffusivity, mm²/s		3.9
Thermal Diffusivity, mm²/s		4.3

Thermal Shock Resistance, points		19
Thermal Shock Resistance, points		21

Alloy Composition

Carbon (C), %		0 to 0.060
Carbon (C), %		0 to 0.040

Chromium (Cr), %		17 to 19
Chromium (Cr), %		24 to 27

Copper (Cu), %		0 to 0.75
Copper (Cu), %		1.5 to 3.0

Iron (Fe), %		58.6 to 68.4
Iron (Fe), %		52.7 to 62.5

Manganese (Mn), %		10.5 to 13.5
Manganese (Mn), %		0.5 to 1.5

Molybdenum (Mo), %		0 to 0.75
Molybdenum (Mo), %		2.9 to 3.9

Nickel (Ni), %		4.0 to 6.0
Nickel (Ni), %		8.5 to 10.5

Nitrogen (N), %		0.1 to 0.3
Nitrogen (N), %		0.080 to 0.25

Phosphorus (P), %		0 to 0.040
Phosphorus (P), %		0 to 0.040

Silicon (Si), %		0 to 1.0
Silicon (Si), %		0 to 1.0

Sulfur (S), %		0 to 0.030
Sulfur (S), %		0 to 0.030