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AWS ERTi-2 vs. Grade 300 Maraging Steel

AWS ERTi-2 belongs to the titanium alloys classification, while grade 300 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-2 and the bottom bar is grade 300 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 20
6.5 to 18
Poisson's Ratio 0.32
0.3
Shear Modulus, GPa 40
75
Tensile Strength: Ultimate (UTS), MPa 340
1030 to 2030
Tensile Strength: Yield (Proof), MPa 280
760 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 420
270
Melting Completion (Liquidus), °C 1670
1480
Melting Onset (Solidus), °C 1620
1430
Specific Heat Capacity, J/kg-K 540
450
Thermal Expansion, µm/m-K 8.7
12

Otherwise Unclassified Properties

Base Metal Price, % relative 37
34
Density, g/cm3 4.5
8.2
Embodied Carbon, kg CO2/kg material 31
5.1
Embodied Energy, MJ/kg 510
68
Embodied Water, L/kg 110
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
130 to 170
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
23
Strength to Weight: Axial, points 21
35 to 68
Strength to Weight: Bending, points 24
28 to 43
Thermal Shock Resistance, points 27
31 to 62

Alloy Composition

Aluminum (Al), % 0
0.050 to 0.15
Boron (B), % 0
0 to 0.0030
Calcium (Ca), % 0
0 to 0.050
Carbon (C), % 0 to 0.030
0 to 0.030
Cobalt (Co), % 0
8.5 to 9.5
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
65 to 68.4
Manganese (Mn), % 0
0 to 0.1
Molybdenum (Mo), % 0
4.6 to 5.2
Nickel (Ni), % 0
18 to 19
Nitrogen (N), % 0 to 0.015
0
Oxygen (O), % 0.080 to 0.16
0
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0
0 to 0.1
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 99.667 to 99.92
0.5 to 0.8
Zirconium (Zr), % 0
0 to 0.020