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ASTM A356 Grade 9 vs. AWS ERTi-5

ASTM A356 grade 9 belongs to the iron alloys classification, while AWS ERTi-5 belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM A356 grade 9 and the bottom bar is AWS ERTi-5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 17
10
Fatigue Strength, MPa 310
470
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
40
Tensile Strength: Ultimate (UTS), MPa 670
900
Tensile Strength: Yield (Proof), MPa 460
830

Thermal Properties

Latent Heat of Fusion, J/g 260
410
Maximum Temperature: Mechanical, °C 440
340
Melting Completion (Liquidus), °C 1470
1610
Melting Onset (Solidus), °C 1430
1560
Specific Heat Capacity, J/kg-K 470
560
Thermal Conductivity, W/m-K 41
7.1
Thermal Expansion, µm/m-K 13
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 3.6
36
Density, g/cm3 7.8
4.4
Embodied Carbon, kg CO2/kg material 2.4
38
Embodied Energy, MJ/kg 33
610
Embodied Water, L/kg 56
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
87
Resilience: Unit (Modulus of Resilience), kJ/m3 570
3250
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 24
56
Strength to Weight: Bending, points 22
46
Thermal Diffusivity, mm2/s 11
2.9
Thermal Shock Resistance, points 19
63

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0 to 0.2
0 to 0.050
Chromium (Cr), % 1.0 to 1.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 95.2 to 97.2
0 to 0.22
Manganese (Mn), % 0.5 to 0.9
0
Molybdenum (Mo), % 0.9 to 1.2
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0.12 to 0.2
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.2 to 0.6
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
88.2 to 90.9
Vanadium (V), % 0.2 to 0.35
3.5 to 4.5