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Grade 4 Titanium vs. EN 1.4901 Stainless Steel

Grade 4 titanium belongs to the titanium alloys classification, while EN 1.4901 stainless steel belongs to the iron 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 grade 4 titanium and the bottom bar is EN 1.4901 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 17
19
Fatigue Strength, MPa 340
310
Impact Strength: V-Notched Charpy, J 23
38
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
76
Shear Strength, MPa 390
460
Tensile Strength: Ultimate (UTS), MPa 640
740
Tensile Strength: Yield (Proof), MPa 530
490

Thermal Properties

Latent Heat of Fusion, J/g 420
260
Maximum Temperature: Mechanical, °C 320
650
Melting Completion (Liquidus), °C 1660
1490
Melting Onset (Solidus), °C 1610
1450
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 19
26
Thermal Expansion, µm/m-K 9.4
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
8.2
Electrical Conductivity: Equal Weight (Specific), % IACS 6.3
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 37
11
Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 31
2.8
Embodied Energy, MJ/kg 500
40
Embodied Water, L/kg 110
89

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
120
Resilience: Unit (Modulus of Resilience), kJ/m3 1330
620
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 40
26
Strength to Weight: Bending, points 37
23
Thermal Diffusivity, mm2/s 7.6
6.9
Thermal Shock Resistance, points 46
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 0 to 0.080
0.070 to 0.13
Chromium (Cr), % 0
8.5 to 9.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
85.8 to 89.1
Manganese (Mn), % 0
0.3 to 0.6
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 0
0 to 0.4
Niobium (Nb), % 0
0.040 to 0.090
Nitrogen (N), % 0 to 0.050
0.030 to 0.070
Oxygen (O), % 0 to 0.4
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 98.6 to 100
0 to 0.010
Tungsten (W), % 0
1.5 to 2.0
Vanadium (V), % 0
0.15 to 0.25
Zirconium (Zr), % 0
0 to 0.010
Residuals, % 0 to 0.4
0