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AWS ERTi-7 vs. ASTM Grade HL Steel

AWS ERTi-7 belongs to the titanium alloys classification, while ASTM grade HL steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is AWS ERTi-7 and the bottom bar is ASTM grade HL steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 20
11
Fatigue Strength, MPa 190
150
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 40
80
Tensile Strength: Ultimate (UTS), MPa 340
500
Tensile Strength: Yield (Proof), MPa 280
270

Thermal Properties

Latent Heat of Fusion, J/g 420
320
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1670
1390
Melting Onset (Solidus), °C 1620
1340
Specific Heat Capacity, J/kg-K 540
490
Thermal Expansion, µm/m-K 8.7
17

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 47
4.5
Embodied Energy, MJ/kg 800
65
Embodied Water, L/kg 470
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
48
Resilience: Unit (Modulus of Resilience), kJ/m3 360
180
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 21
18
Strength to Weight: Bending, points 24
18
Thermal Shock Resistance, points 26
11

Alloy Composition

Carbon (C), % 0 to 0.030
0.2 to 0.6
Chromium (Cr), % 0
28 to 32
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
40.8 to 53.8
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
18 to 22
Nitrogen (N), % 0 to 0.015
0
Oxygen (O), % 0.080 to 0.16
0
Palladium (Pd), % 0.12 to 0.25
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 2.0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 99.417 to 99.8
0