AWS E312 vs. AWS ERTi-7

AWS E312 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 E312 and the bottom bar is AWS ERTi-7.

AWS E312 (W31310) Weld Metal AWS ERTi-7 Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		200
Elastic (Young's, Tensile) Modulus, GPa		110

Elongation at Break, %		25
Elongation at Break, %		20

Poisson's Ratio		0.27
Poisson's Ratio		0.32

Shear Modulus, GPa		80
Shear Modulus, GPa		40

Tensile Strength: Ultimate (UTS), MPa		740
Tensile Strength: Ultimate (UTS), MPa		340

Thermal Properties

Latent Heat of Fusion, J/g		310
Latent Heat of Fusion, J/g		420

Melting Completion (Liquidus), °C		1410
Melting Completion (Liquidus), °C		1670

Melting Onset (Solidus), °C		1360
Melting Onset (Solidus), °C		1620

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

Thermal Expansion, µm/m-K		15
Thermal Expansion, µm/m-K		8.7

Otherwise Unclassified Properties

Density, g/cm³		7.7
Density, g/cm³		4.5

Embodied Carbon, kg CO₂/kg material		3.6
Embodied Carbon, kg CO₂/kg material		47

Embodied Energy, MJ/kg		52
Embodied Energy, MJ/kg		800

Embodied Water, L/kg		200
Embodied Water, L/kg		470

Common Calculations

Stiffness to Weight: Axial, points		15
Stiffness to Weight: Axial, points		13

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

Strength to Weight: Axial, points		27
Strength to Weight: Axial, points		21

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

Thermal Shock Resistance, points		18
Thermal Shock Resistance, points		26

Alloy Composition

Carbon (C), %		0 to 0.15
Carbon (C), %		0 to 0.030

Chromium (Cr), %		28 to 32
Chromium (Cr), %		0

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

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

Iron (Fe), %		52.3 to 63.5
Iron (Fe), %		0 to 0.12

Manganese (Mn), %		0.5 to 2.5
Manganese (Mn), %		0

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

Nickel (Ni), %		8.0 to 10.5
Nickel (Ni), %		0

Nitrogen (N), %		0
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 0.040
Phosphorus (P), %		0

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

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

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