AWS E33-31 vs. AWS ERTi-7

AWS E33-31 belongs to the iron alloys classification, while AWS ERTi-7 belongs to the titanium 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 E33-31 and the bottom bar is AWS ERTi-7.

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

Metric UnitsUS Customary Units

Mechanical Properties

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

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

Poisson's Ratio		0.27
Poisson's Ratio		0.32

Shear Modulus, GPa		81
Shear Modulus, GPa		40

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

Thermal Properties

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

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

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

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

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

Otherwise Unclassified Properties

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

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

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

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

Common Calculations

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

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

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

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

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

Alloy Composition

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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