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ASTM B817 Type II vs. AWS ER70S-A1

ASTM B817 type II belongs to the titanium alloys classification, while AWS ER70S-A1 belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ASTM B817 type II and the bottom bar is AWS ER70S-A1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
190
Elongation at Break, % 3.0 to 13
22
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
73
Tensile Strength: Ultimate (UTS), MPa 900 to 960
590
Tensile Strength: Yield (Proof), MPa 780 to 900
450

Thermal Properties

Latent Heat of Fusion, J/g 400
260
Melting Completion (Liquidus), °C 1580
1460
Melting Onset (Solidus), °C 1530
1420
Specific Heat Capacity, J/kg-K 550
470
Thermal Expansion, µm/m-K 9.9
13

Otherwise Unclassified Properties

Base Metal Price, % relative 37
2.5
Density, g/cm3 4.6
7.8
Embodied Carbon, kg CO2/kg material 40
1.5
Embodied Energy, MJ/kg 650
20
Embodied Water, L/kg 220
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 26 to 120
120
Resilience: Unit (Modulus of Resilience), kJ/m3 2890 to 3890
540
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 34
24
Strength to Weight: Axial, points 55 to 58
21
Strength to Weight: Bending, points 45 to 47
20
Thermal Shock Resistance, points 62 to 66
17

Alloy Composition

Aluminum (Al), % 5.0 to 6.0
0
Carbon (C), % 0 to 0.1
0 to 0.12
Chlorine (Cl), % 0 to 0.2
0
Copper (Cu), % 0.35 to 1.0
0 to 0.35
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0.35 to 1.0
96.1 to 99.3
Manganese (Mn), % 0
0 to 1.3
Molybdenum (Mo), % 0
0.4 to 0.65
Nickel (Ni), % 0
0 to 0.2
Nitrogen (N), % 0 to 0.040
0
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.1
0.3 to 0.7
Sodium (Na), % 0 to 0.2
0
Sulfur (S), % 0
0 to 0.025
Tin (Sn), % 1.5 to 2.5
0
Titanium (Ti), % 82.1 to 87.8
0
Vanadium (V), % 5.0 to 6.0
0
Residuals, % 0 to 0.4
0 to 0.5