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AISI 446 Stainless Steel vs. Grade 1 Titanium

AISI 446 stainless steel belongs to the iron alloys classification, while grade 1 titanium belongs to the titanium alloys. There are 32 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 446 stainless steel and the bottom bar is grade 1 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
120
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 23
28
Fatigue Strength, MPa 200
170
Poisson's Ratio 0.27
0.32
Reduction in Area, % 50
36
Shear Modulus, GPa 79
39
Shear Strength, MPa 360
200
Tensile Strength: Ultimate (UTS), MPa 570
310
Tensile Strength: Yield (Proof), MPa 300
220

Thermal Properties

Latent Heat of Fusion, J/g 290
420
Maximum Temperature: Mechanical, °C 1180
320
Melting Completion (Liquidus), °C 1510
1660
Melting Onset (Solidus), °C 1430
1610
Specific Heat Capacity, J/kg-K 490
540
Thermal Conductivity, W/m-K 17
20
Thermal Expansion, µm/m-K 11
8.8

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
37
Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 2.4
31
Embodied Energy, MJ/kg 35
510
Embodied Water, L/kg 150
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
79
Resilience: Unit (Modulus of Resilience), kJ/m3 230
230
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
35
Strength to Weight: Axial, points 21
19
Strength to Weight: Bending, points 20
23
Thermal Diffusivity, mm2/s 4.6
8.2
Thermal Shock Resistance, points 19
24

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.080
Chromium (Cr), % 23 to 27
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 69.2 to 77
0 to 0.2
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 0 to 0.75
0
Nitrogen (N), % 0 to 0.25
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 0.030
0
Titanium (Ti), % 0
99.095 to 100
Residuals, % 0
0 to 0.4