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AISI 415 Stainless Steel vs. R58150 Titanium

AISI 415 stainless steel belongs to the iron alloys classification, while R58150 titanium belongs to the titanium alloys. There are 27 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 AISI 415 stainless steel and the bottom bar is R58150 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
140
Elongation at Break, % 17
13
Fatigue Strength, MPa 430
330
Poisson's Ratio 0.28
0.32
Reduction in Area, % 50
68
Shear Modulus, GPa 76
52
Shear Strength, MPa 550
470
Tensile Strength: Ultimate (UTS), MPa 900
770
Tensile Strength: Yield (Proof), MPa 700
550

Thermal Properties

Latent Heat of Fusion, J/g 270
410
Maximum Temperature: Mechanical, °C 780
320
Melting Completion (Liquidus), °C 1450
1760
Melting Onset (Solidus), °C 1400
1700
Specific Heat Capacity, J/kg-K 480
500
Thermal Expansion, µm/m-K 10
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 11
48
Density, g/cm3 7.8
5.4
Embodied Carbon, kg CO2/kg material 2.5
31
Embodied Energy, MJ/kg 35
480
Embodied Water, L/kg 110
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
94
Resilience: Unit (Modulus of Resilience), kJ/m3 1250
1110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
32
Strength to Weight: Axial, points 32
40
Strength to Weight: Bending, points 26
35
Thermal Shock Resistance, points 33
48

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.1
Chromium (Cr), % 11.5 to 14
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 77.8 to 84
0 to 0.1
Manganese (Mn), % 0.5 to 1.0
0
Molybdenum (Mo), % 0.5 to 1.0
14 to 16
Nickel (Ni), % 3.5 to 5.5
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
83.5 to 86