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AISI 440B Stainless Steel vs. R58150 Titanium

AISI 440B stainless steel belongs to the iron alloys classification, while R58150 titanium belongs to the titanium alloys. There are 25 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 440B 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, % 3.0 to 18
13
Fatigue Strength, MPa 260 to 850
330
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
52
Shear Strength, MPa 460 to 1110
470
Tensile Strength: Ultimate (UTS), MPa 740 to 1930
770
Tensile Strength: Yield (Proof), MPa 430 to 1860
550

Thermal Properties

Latent Heat of Fusion, J/g 280
410
Maximum Temperature: Mechanical, °C 870
320
Melting Completion (Liquidus), °C 1480
1760
Melting Onset (Solidus), °C 1370
1700
Specific Heat Capacity, J/kg-K 480
500
Thermal Expansion, µm/m-K 10
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
48
Density, g/cm3 7.7
5.4
Embodied Carbon, kg CO2/kg material 2.2
31
Embodied Energy, MJ/kg 31
480
Embodied Water, L/kg 120
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57 to 110
94
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
32
Strength to Weight: Axial, points 27 to 70
40
Strength to Weight: Bending, points 24 to 45
35
Thermal Shock Resistance, points 27 to 70
48

Alloy Composition

Carbon (C), % 0.75 to 1.0
0 to 0.1
Chromium (Cr), % 16 to 18
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 78.2 to 83.3
0 to 0.1
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0 to 0.75
14 to 16
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
83.5 to 86