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AISI 440B Stainless Steel vs. Grade 1 Titanium

AISI 440B stainless steel belongs to the iron alloys classification, while grade 1 titanium belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AISI 440B stainless steel and the bottom bar is grade 1 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 3.0 to 18
28
Fatigue Strength, MPa 260 to 850
170
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
39
Shear Strength, MPa 460 to 1110
200
Tensile Strength: Ultimate (UTS), MPa 740 to 1930
310
Tensile Strength: Yield (Proof), MPa 430 to 1860
220

Thermal Properties

Latent Heat of Fusion, J/g 280
420
Maximum Temperature: Mechanical, °C 870
320
Melting Completion (Liquidus), °C 1480
1660
Melting Onset (Solidus), °C 1370
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 23
20
Thermal Expansion, µm/m-K 10
8.8

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
37
Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 2.2
31
Embodied Energy, MJ/kg 31
510
Embodied Water, L/kg 120
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57 to 110
79
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 27 to 70
19
Strength to Weight: Bending, points 24 to 45
23
Thermal Diffusivity, mm2/s 6.1
8.2
Thermal Shock Resistance, points 27 to 70
24

Alloy Composition

Carbon (C), % 0.75 to 1.0
0 to 0.080
Chromium (Cr), % 16 to 18
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 78.2 to 83.3
0 to 0.2
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0 to 0.75
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
99.095 to 100
Residuals, % 0
0 to 0.4