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AWS E330H vs. AWS E347

Both AWS E330H and AWS E347 are iron alloys. Both are furnished in the as-welded condition. They have 74% of their average alloy composition in common.

For each property being compared, the top bar is AWS E330H and the bottom bar is AWS E347.

AWS E330H (W88335) Weld Metal AWS E347 (W34710) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

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

Elongation at Break, %		11
Elongation at Break, %		34

Poisson's Ratio		0.29
Poisson's Ratio		0.28

Shear Modulus, GPa		76
Shear Modulus, GPa		77

Tensile Strength: Ultimate (UTS), MPa		690
Tensile Strength: Ultimate (UTS), MPa		580

Thermal Properties

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

Melting Completion (Liquidus), °C		1400
Melting Completion (Liquidus), °C		1430

Melting Onset (Solidus), °C		1350
Melting Onset (Solidus), °C		1380

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

Thermal Conductivity, W/m-K		12
Thermal Conductivity, W/m-K		16

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		1.7
Electrical Conductivity: Equal Volume, % IACS		2.1

Electrical Conductivity: Equal Weight (Specific), % IACS		1.9
Electrical Conductivity: Equal Weight (Specific), % IACS		2.4

Otherwise Unclassified Properties

Base Metal Price, % relative		30
Base Metal Price, % relative		19

Density, g/cm³		8.1
Density, g/cm³		7.8

Embodied Carbon, kg CO₂/kg material		5.4
Embodied Carbon, kg CO₂/kg material		3.7

Embodied Energy, MJ/kg		76
Embodied Energy, MJ/kg		53

Embodied Water, L/kg		180
Embodied Water, L/kg		150

Common Calculations

PREN (Pitting Resistance)		17
PREN (Pitting Resistance)		21

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		24
Strength to Weight: Axial, points		21

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

Thermal Diffusivity, mm²/s		3.2
Thermal Diffusivity, mm²/s		4.2

Thermal Shock Resistance, points		19
Thermal Shock Resistance, points		15

Alloy Composition

Carbon (C), %		0.35 to 0.45
Carbon (C), %		0 to 0.080

Chromium (Cr), %		14 to 17
Chromium (Cr), %		18 to 21

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

Iron (Fe), %		40.5 to 51.7
Iron (Fe), %		61.9 to 72.5

Manganese (Mn), %		1.0 to 2.5
Manganese (Mn), %		0.5 to 2.5

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

Nickel (Ni), %		33 to 37
Nickel (Ni), %		9.0 to 11

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

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