AWS E240 vs. SAE-AISI O6 Steel

Both AWS E240 and SAE-AISI O6 steel are iron alloys. They have 65% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AWS E240 and the bottom bar is SAE-AISI O6 steel.

AWS E240 (W32410) Weld Metal SAE-AISI O6 (T31506) Oil-Hardening Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		200
Elastic (Young's, Tensile) Modulus, GPa		180

Poisson's Ratio		0.28
Poisson's Ratio		0.29

Shear Modulus, GPa		77
Shear Modulus, GPa		71

Tensile Strength: Ultimate (UTS), MPa		770
Tensile Strength: Ultimate (UTS), MPa		670 to 2070

Thermal Properties

Latent Heat of Fusion, J/g		290
Latent Heat of Fusion, J/g		260

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		480

Thermal Conductivity, W/m-K		15
Thermal Conductivity, W/m-K		43

Thermal Expansion, µm/m-K		15
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Base Metal Price, % relative		14
Base Metal Price, % relative		2.3

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

Embodied Carbon, kg CO₂/kg material		3.0
Embodied Carbon, kg CO₂/kg material		1.5

Embodied Energy, MJ/kg		42
Embodied Energy, MJ/kg		21

Embodied Water, L/kg		160
Embodied Water, L/kg		47

Common Calculations

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		13

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

Strength to Weight: Axial, points		28
Strength to Weight: Axial, points		24 to 74

Strength to Weight: Bending, points		24
Strength to Weight: Bending, points		22 to 47

Thermal Diffusivity, mm²/s		3.9
Thermal Diffusivity, mm²/s		12

Thermal Shock Resistance, points		19
Thermal Shock Resistance, points		22 to 69

Alloy Composition

Carbon (C), %		0 to 0.060
Carbon (C), %		1.3 to 1.6

Chromium (Cr), %		17 to 19
Chromium (Cr), %		0 to 0.3

Copper (Cu), %		0 to 0.75
Copper (Cu), %		0 to 0.25

Iron (Fe), %		58.6 to 68.4
Iron (Fe), %		94.6 to 97.7

Manganese (Mn), %		10.5 to 13.5
Manganese (Mn), %		0.3 to 1.1

Molybdenum (Mo), %		0 to 0.75
Molybdenum (Mo), %		0.2 to 0.3

Nickel (Ni), %		4.0 to 6.0
Nickel (Ni), %		0 to 0.3

Nitrogen (N), %		0.1 to 0.3
Nitrogen (N), %		0

Phosphorus (P), %		0 to 0.040
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		0 to 1.0
Silicon (Si), %		0.55 to 1.5

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