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AISI 441 Stainless Steel vs. Grade 1 Titanium

AISI 441 stainless steel belongs to the iron alloys classification, while grade 1 titanium belongs to the titanium alloys. There are 31 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 441 stainless steel and the bottom bar is grade 1 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
120
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 23
28
Fatigue Strength, MPa 180
170
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
39
Shear Strength, MPa 300
200
Tensile Strength: Ultimate (UTS), MPa 470
310
Tensile Strength: Yield (Proof), MPa 270
220

Thermal Properties

Latent Heat of Fusion, J/g 280
420
Maximum Temperature: Mechanical, °C 910
320
Melting Completion (Liquidus), °C 1440
1660
Melting Onset (Solidus), °C 1400
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 2.7
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
37
Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 2.8
31
Embodied Energy, MJ/kg 41
510
Embodied Water, L/kg 130
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
79
Resilience: Unit (Modulus of Resilience), kJ/m3 190
230
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 17
19
Strength to Weight: Bending, points 17
23
Thermal Diffusivity, mm2/s 6.1
8.2
Thermal Shock Resistance, points 16
24

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 17.5 to 19.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 76 to 82.2
0 to 0.2
Manganese (Mn), % 0 to 1.0
0
Nickel (Ni), % 0 to 1.0
0
Niobium (Nb), % 0.3 to 0.9
0
Nitrogen (N), % 0 to 0.030
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), % 0.1 to 0.5
99.095 to 100
Residuals, % 0
0 to 0.4