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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.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 29
20
Poisson's Ratio 0.27
0.32
Shear Modulus, GPa 81
40
Tensile Strength: Ultimate (UTS), MPa 810
340

Thermal Properties

Latent Heat of Fusion, J/g 320
420
Melting Completion (Liquidus), °C 1380
1670
Melting Onset (Solidus), °C 1330
1620
Specific Heat Capacity, J/kg-K 480
540
Thermal Expansion, µm/m-K 14
8.7

Otherwise Unclassified Properties

Density, g/cm3 7.9
4.5
Embodied Carbon, kg CO2/kg material 6.0
47
Embodied Energy, MJ/kg 86
800
Embodied Water, L/kg 260
470

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 28
21
Strength to Weight: Bending, points 24
24
Thermal Shock Resistance, points 19
26

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 31 to 35
0
Copper (Cu), % 0.4 to 0.8
0
Hydrogen (H), % 0
0 to 0.0080
Iron (Fe), % 24.7 to 34.8
0 to 0.12
Manganese (Mn), % 2.5 to 4.0
0
Molybdenum (Mo), % 1.0 to 2.0
0
Nickel (Ni), % 30 to 32
0
Nitrogen (N), % 0.3 to 0.5
0 to 0.015
Oxygen (O), % 0
0.080 to 0.16
Palladium (Pd), % 0
0.12 to 0.25
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.9
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
99.417 to 99.8