AWS E320LR vs. AWS E409Nb

Both AWS E320LR and AWS E409Nb are iron alloys. They have 52% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AWS E320LR and the bottom bar is AWS E409Nb.

AWS E320LR (W88022) Weld Metal AWS E409Nb (W40910) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

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

Elongation at Break, %		34
Elongation at Break, %		23

Poisson's Ratio		0.28
Poisson's Ratio		0.28

Shear Modulus, GPa		77
Shear Modulus, GPa		76

Tensile Strength: Ultimate (UTS), MPa		580
Tensile Strength: Ultimate (UTS), MPa		500

Thermal Properties

Latent Heat of Fusion, J/g		300
Latent Heat of Fusion, J/g		280

Melting Completion (Liquidus), °C		1410
Melting Completion (Liquidus), °C		1460

Melting Onset (Solidus), °C		1360
Melting Onset (Solidus), °C		1410

Specific Heat Capacity, J/kg-K		460
Specific Heat Capacity, J/kg-K		480

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

Otherwise Unclassified Properties

Base Metal Price, % relative		36
Base Metal Price, % relative		13

Density, g/cm³		8.2
Density, g/cm³		7.8

Embodied Carbon, kg CO₂/kg material		6.2
Embodied Carbon, kg CO₂/kg material		2.9

Embodied Energy, MJ/kg		87
Embodied Energy, MJ/kg		42

Embodied Water, L/kg		220
Embodied Water, L/kg		100

Common Calculations

PREN (Pitting Resistance)		28
PREN (Pitting Resistance)		14

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

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

Strength to Weight: Axial, points		20
Strength to Weight: Axial, points		18

Strength to Weight: Bending, points		19
Strength to Weight: Bending, points		18

Thermal Shock Resistance, points		15
Thermal Shock Resistance, points		14

Alloy Composition

Carbon (C), %		0 to 0.030
Carbon (C), %		0 to 0.12

Chromium (Cr), %		19 to 21
Chromium (Cr), %		11 to 14

Copper (Cu), %		3.0 to 4.0
Copper (Cu), %		0 to 0.75

Iron (Fe), %		32.7 to 42.5
Iron (Fe), %		80.2 to 88.5

Manganese (Mn), %		1.5 to 2.5
Manganese (Mn), %		0 to 1.0

Molybdenum (Mo), %		2.0 to 3.0
Molybdenum (Mo), %		0 to 0.75

Nickel (Ni), %		32 to 36
Nickel (Ni), %		0 to 0.6

Niobium (Nb), %		0 to 0.4
Niobium (Nb), %		0.5 to 1.5

Phosphorus (P), %		0 to 0.020
Phosphorus (P), %		0 to 0.040

Silicon (Si), %		0 to 0.3
Silicon (Si), %		0 to 1.0

Sulfur (S), %		0 to 0.015
Sulfur (S), %		0 to 0.030