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AWS ERTi-5 vs. Grade 250 Maraging Steel

AWS ERTi-5 belongs to the titanium alloys classification, while grade 250 maraging steel belongs to the iron alloys. There are 22 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-5 and the bottom bar is grade 250 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 10
7.3 to 17
Poisson's Ratio 0.32
0.3
Shear Modulus, GPa 40
75
Tensile Strength: Ultimate (UTS), MPa 900
970 to 1800
Tensile Strength: Yield (Proof), MPa 830
660 to 1740

Thermal Properties

Latent Heat of Fusion, J/g 410
270
Melting Completion (Liquidus), °C 1610
1480
Melting Onset (Solidus), °C 1560
1430
Specific Heat Capacity, J/kg-K 560
450
Thermal Expansion, µm/m-K 9.6
12

Otherwise Unclassified Properties

Base Metal Price, % relative 36
32
Density, g/cm3 4.4
8.2
Embodied Carbon, kg CO2/kg material 38
4.9
Embodied Energy, MJ/kg 610
65
Embodied Water, L/kg 200
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87
130 to 150
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
23
Strength to Weight: Axial, points 56
33 to 61
Strength to Weight: Bending, points 46
26 to 40
Thermal Shock Resistance, points 63
29 to 54

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0.050 to 0.15
Boron (B), % 0
0 to 0.0030
Calcium (Ca), % 0
0 to 0.050
Carbon (C), % 0 to 0.050
0 to 0.030
Cobalt (Co), % 0
7.0 to 8.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.22
66.3 to 71.1
Manganese (Mn), % 0
0 to 0.1
Molybdenum (Mo), % 0
4.6 to 5.2
Nickel (Ni), % 0
17 to 19
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0.12 to 0.2
0
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0
0 to 0.1
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 88.2 to 90.9
0.3 to 0.5
Vanadium (V), % 3.5 to 4.5
0
Zirconium (Zr), % 0
0 to 0.020