AWS E320 vs. AWS E307

Both AWS E320 and AWS E307 are iron alloys. Both are furnished in the as-welded condition. They have 70% 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 E320 and the bottom bar is AWS E307.

AWS E320 (W88021) Weld Metal AWS E307 (W30710) 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, %		34
Elongation at Break, %		34

Poisson's Ratio		0.28
Poisson's Ratio		0.28

Shear Modulus, GPa		77
Shear Modulus, GPa		78

Tensile Strength: Ultimate (UTS), MPa		620
Tensile Strength: Ultimate (UTS), MPa		660

Thermal Properties

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

Melting Completion (Liquidus), °C		1410
Melting Completion (Liquidus), °C		1420

Melting Onset (Solidus), °C		1360
Melting Onset (Solidus), °C		1370

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		38
Base Metal Price, % relative		17

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

Embodied Carbon, kg CO₂/kg material		6.5
Embodied Carbon, kg CO₂/kg material		3.5

Embodied Energy, MJ/kg		91
Embodied Energy, MJ/kg		49

Embodied Water, L/kg		220
Embodied Water, L/kg		160

Common Calculations

PREN (Pitting Resistance)		28
PREN (Pitting Resistance)		23

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		21
Strength to Weight: Axial, points		24

Strength to Weight: Bending, points		20
Strength to Weight: Bending, points		22

Thermal Shock Resistance, points		16
Thermal Shock Resistance, points		17

Alloy Composition

Carbon (C), %		0 to 0.070
Carbon (C), %		0.040 to 0.14

Chromium (Cr), %		19 to 21
Chromium (Cr), %		18 to 21.5

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

Iron (Fe), %		31.8 to 43.5
Iron (Fe), %		59.6 to 69.2

Manganese (Mn), %		0.5 to 2.5
Manganese (Mn), %		3.3 to 4.8

Molybdenum (Mo), %		2.0 to 3.0
Molybdenum (Mo), %		0.5 to 1.5

Nickel (Ni), %		32 to 36
Nickel (Ni), %		9.0 to 10.7

Niobium (Nb), %		0 to 1.0
Niobium (Nb), %		0

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

Silicon (Si), %		0 to 0.6
Silicon (Si), %		0 to 1.0

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