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.

AWS E2593 (W39593) Weld Metal AWS E240 (W32410) 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		0.27
Poisson's Ratio		0.28

Shear Modulus, GPa		80
Shear Modulus, GPa		77

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

Thermal Properties

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

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

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

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

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

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

Otherwise Unclassified Properties

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

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

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

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

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

Common Calculations

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

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		30
Strength to Weight: Axial, points		28

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

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

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

Alloy Composition

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

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

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

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

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

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

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

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

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