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Grade 4 Titanium vs. EN 1.4417 Stainless Steel

Grade 4 titanium belongs to the titanium alloys classification, while EN 1.4417 stainless steel belongs to the iron alloys. There are 30 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 grade 4 titanium and the bottom bar is EN 1.4417 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 17
25
Fatigue Strength, MPa 340
380
Impact Strength: V-Notched Charpy, J 23
56
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 41
81
Tensile Strength: Ultimate (UTS), MPa 640
730
Tensile Strength: Yield (Proof), MPa 530
550

Thermal Properties

Latent Heat of Fusion, J/g 420
300
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1660
1450
Melting Onset (Solidus), °C 1610
1410
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 19
17
Thermal Expansion, µm/m-K 9.4
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 6.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 37
21
Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 31
4.1
Embodied Energy, MJ/kg 500
57
Embodied Water, L/kg 110
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
170
Resilience: Unit (Modulus of Resilience), kJ/m3 1330
730
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 40
26
Strength to Weight: Bending, points 37
23
Thermal Diffusivity, mm2/s 7.6
4.6
Thermal Shock Resistance, points 46
20

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 0
24 to 26
Copper (Cu), % 0
0 to 1.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
56.7 to 66.9
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 0
6.0 to 8.5
Nitrogen (N), % 0 to 0.050
0.15 to 0.25
Oxygen (O), % 0 to 0.4
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 98.6 to 100
0
Tungsten (W), % 0
0 to 1.0
Residuals, % 0 to 0.4
0