AWS E240 vs. ASTM A182 Grade F5a

Both AWS E240 and ASTM A182 grade F5a are iron alloys. They have 70% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is AWS E240 and the bottom bar is ASTM A182 grade F5a.

AWS E240 (W32410) Weld Metal ASTM A182 Grade F5a (K42544) Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		200
Elastic (Young's, Tensile) Modulus, GPa		190

Elongation at Break, %		17
Elongation at Break, %		25

Poisson's Ratio		0.28
Poisson's Ratio		0.29

Shear Modulus, GPa		77
Shear Modulus, GPa		74

Tensile Strength: Ultimate (UTS), MPa		770
Tensile Strength: Ultimate (UTS), MPa		710

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		1460

Melting Onset (Solidus), °C		1350
Melting Onset (Solidus), °C		1420

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		40

Thermal Expansion, µm/m-K		15
Thermal Expansion, µm/m-K		13

Otherwise Unclassified Properties

Base Metal Price, % relative		14
Base Metal Price, % relative		4.5

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

Embodied Carbon, kg CO₂/kg material		3.0
Embodied Carbon, kg CO₂/kg material		1.8

Embodied Energy, MJ/kg		42
Embodied Energy, MJ/kg		24

Embodied Water, L/kg		160
Embodied Water, L/kg		69

Common Calculations

PREN (Pitting Resistance)		22
PREN (Pitting Resistance)		6.8

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		25

Strength to Weight: Bending, points		24
Strength to Weight: Bending, points		23

Thermal Diffusivity, mm²/s		3.9
Thermal Diffusivity, mm²/s		11

Thermal Shock Resistance, points		19
Thermal Shock Resistance, points		20

Alloy Composition

Carbon (C), %		0 to 0.060
Carbon (C), %		0 to 0.25

Chromium (Cr), %		17 to 19
Chromium (Cr), %		4.0 to 6.0

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

Iron (Fe), %		58.6 to 68.4
Iron (Fe), %		91.4 to 95.6

Manganese (Mn), %		10.5 to 13.5
Manganese (Mn), %		0 to 0.6

Molybdenum (Mo), %		0 to 0.75
Molybdenum (Mo), %		0.44 to 0.65

Nickel (Ni), %		4.0 to 6.0
Nickel (Ni), %		0 to 0.5

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

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

Silicon (Si), %		0 to 1.0
Silicon (Si), %		0 to 0.5

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