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Grade 4 Titanium vs. AISI 205 Stainless Steel

Grade 4 titanium belongs to the titanium alloys classification, while AISI 205 stainless steel belongs to the iron 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 grade 4 titanium and the bottom bar is AISI 205 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
210 to 440
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 17
11 to 51
Fatigue Strength, MPa 340
410 to 640
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
77
Shear Strength, MPa 390
560 to 850
Tensile Strength: Ultimate (UTS), MPa 640
800 to 1430
Tensile Strength: Yield (Proof), MPa 530
450 to 1100

Thermal Properties

Latent Heat of Fusion, J/g 420
280
Maximum Temperature: Mechanical, °C 320
880
Melting Completion (Liquidus), °C 1660
1380
Melting Onset (Solidus), °C 1610
1340
Specific Heat Capacity, J/kg-K 540
480
Thermal Expansion, µm/m-K 9.4
18

Otherwise Unclassified Properties

Base Metal Price, % relative 37
11
Density, g/cm3 4.5
7.6
Embodied Carbon, kg CO2/kg material 31
2.6
Embodied Energy, MJ/kg 500
37
Embodied Water, L/kg 110
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
150 to 430
Resilience: Unit (Modulus of Resilience), kJ/m3 1330
510 to 3060
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
26
Strength to Weight: Axial, points 40
29 to 52
Strength to Weight: Bending, points 37
25 to 37
Thermal Shock Resistance, points 46
16 to 29

Alloy Composition

Carbon (C), % 0 to 0.080
0.12 to 0.25
Chromium (Cr), % 0
16.5 to 18.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
62.6 to 68.1
Manganese (Mn), % 0
14 to 15.5
Nickel (Ni), % 0
1.0 to 1.7
Nitrogen (N), % 0 to 0.050
0.32 to 0.4
Oxygen (O), % 0 to 0.4
0
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 98.6 to 100
0
Residuals, % 0 to 0.4
0