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ASTM A356 Grade 2 vs. R58150 Titanium

ASTM A356 grade 2 belongs to the iron alloys classification, while R58150 titanium belongs to the titanium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM A356 grade 2 and the bottom bar is R58150 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
140
Elongation at Break, % 25
13
Fatigue Strength, MPa 200
330
Poisson's Ratio 0.29
0.32
Reduction in Area, % 39
68
Shear Modulus, GPa 73
52
Tensile Strength: Ultimate (UTS), MPa 510
770
Tensile Strength: Yield (Proof), MPa 270
550

Thermal Properties

Latent Heat of Fusion, J/g 250
410
Maximum Temperature: Mechanical, °C 410
320
Melting Completion (Liquidus), °C 1470
1760
Melting Onset (Solidus), °C 1430
1700
Specific Heat Capacity, J/kg-K 470
500
Thermal Expansion, µm/m-K 13
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
48
Density, g/cm3 7.9
5.4
Embodied Carbon, kg CO2/kg material 1.5
31
Embodied Energy, MJ/kg 20
480
Embodied Water, L/kg 47
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
94
Resilience: Unit (Modulus of Resilience), kJ/m3 190
1110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
32
Strength to Weight: Axial, points 18
40
Strength to Weight: Bending, points 18
35
Thermal Shock Resistance, points 15
48

Alloy Composition

Carbon (C), % 0 to 0.25
0 to 0.1
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 97.7 to 99.55
0 to 0.1
Manganese (Mn), % 0 to 0.7
0
Molybdenum (Mo), % 0.45 to 0.65
14 to 16
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
83.5 to 86