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Grade 1 Titanium vs. EN 1.4451 Stainless Steel

Grade 1 titanium belongs to the titanium alloys classification, while EN 1.4451 stainless steel belongs to the iron alloys. There are 30 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 1 titanium and the bottom bar is EN 1.4451 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
220
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 28
25
Fatigue Strength, MPa 170
370
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 39
80
Tensile Strength: Ultimate (UTS), MPa 310
750
Tensile Strength: Yield (Proof), MPa 220
540

Thermal Properties

Latent Heat of Fusion, J/g 420
300
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1660
1430
Melting Onset (Solidus), °C 1610
1380
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 20
17
Thermal Expansion, µm/m-K 8.8
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 37
20
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
3.8
Embodied Energy, MJ/kg 510
53
Embodied Water, L/kg 110
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79
170
Resilience: Unit (Modulus of Resilience), kJ/m3 230
710
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 19
27
Strength to Weight: Bending, points 23
23
Thermal Diffusivity, mm2/s 8.2
4.5
Thermal Shock Resistance, points 24
16

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 0
25 to 27
Copper (Cu), % 0
2.8 to 3.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
56.2 to 64.6
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
5.0 to 7.0
Nitrogen (N), % 0 to 0.030
0.12 to 0.22
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 99.095 to 100
0
Residuals, % 0 to 0.4
0