AWS ERTi-7 vs. AWS E33-31

AWS ERTi-7 belongs to the titanium alloys classification, while AWS E33-31 belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is AWS ERTi-7 and the bottom bar is AWS E33-31.

AWS ERTi-7 Weld Metal AWS E33-31 (W33310) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		110
Elastic (Young's, Tensile) Modulus, GPa		210

Elongation at Break, %		20
Elongation at Break, %		29

Poisson's Ratio		0.32
Poisson's Ratio		0.27

Shear Modulus, GPa		40
Shear Modulus, GPa		81

Tensile Strength: Ultimate (UTS), MPa		340
Tensile Strength: Ultimate (UTS), MPa		810

Thermal Properties

Latent Heat of Fusion, J/g		420
Latent Heat of Fusion, J/g		320

Melting Completion (Liquidus), °C		1670
Melting Completion (Liquidus), °C		1380

Melting Onset (Solidus), °C		1620
Melting Onset (Solidus), °C		1330

Specific Heat Capacity, J/kg-K		540
Specific Heat Capacity, J/kg-K		480

Thermal Expansion, µm/m-K		8.7
Thermal Expansion, µm/m-K		14

Otherwise Unclassified Properties

Density, g/cm³		4.5
Density, g/cm³		7.9

Embodied Carbon, kg CO₂/kg material		47
Embodied Carbon, kg CO₂/kg material		6.0

Embodied Energy, MJ/kg		800
Embodied Energy, MJ/kg		86

Embodied Water, L/kg		470
Embodied Water, L/kg		260

Common Calculations

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

Stiffness to Weight: Bending, points		35
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		21
Strength to Weight: Axial, points		28

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

Thermal Shock Resistance, points		26
Thermal Shock Resistance, points		19

Alloy Composition

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

Chromium (Cr), %		0
Chromium (Cr), %		31 to 35

Copper (Cu), %		0
Copper (Cu), %		0.4 to 0.8

Hydrogen (H), %		0 to 0.0080
Hydrogen (H), %		0

Iron (Fe), %		0 to 0.12
Iron (Fe), %		24.7 to 34.8

Manganese (Mn), %		0
Manganese (Mn), %		2.5 to 4.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		1.0 to 2.0

Nickel (Ni), %		0
Nickel (Ni), %		30 to 32

Nitrogen (N), %		0 to 0.015
Nitrogen (N), %		0.3 to 0.5

Oxygen (O), %		0.080 to 0.16
Oxygen (O), %		0

Palladium (Pd), %		0.12 to 0.25
Palladium (Pd), %		0

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

Silicon (Si), %		0
Silicon (Si), %		0 to 0.9

Sulfur (S), %		0
Sulfur (S), %		0 to 0.010

Titanium (Ti), %		99.417 to 99.8
Titanium (Ti), %		0