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Grade 1 Titanium vs. EN 1.4749 Stainless Steel

Grade 1 titanium belongs to the titanium alloys classification, while EN 1.4749 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is grade 1 titanium and the bottom bar is EN 1.4749 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
180
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 28
16
Fatigue Strength, MPa 170
190
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 39
80
Shear Strength, MPa 200
370
Tensile Strength: Ultimate (UTS), MPa 310
600
Tensile Strength: Yield (Proof), MPa 220
320

Thermal Properties

Latent Heat of Fusion, J/g 420
300
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1660
1420
Melting Onset (Solidus), °C 1610
1380
Specific Heat Capacity, J/kg-K 540
490
Thermal Conductivity, W/m-K 20
17
Thermal Expansion, µm/m-K 8.8
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 37
13
Density, g/cm3 4.5
7.6
Embodied Carbon, kg CO2/kg material 31
2.5
Embodied Energy, MJ/kg 510
36
Embodied Water, L/kg 110
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79
80
Resilience: Unit (Modulus of Resilience), kJ/m3 230
250
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
26
Strength to Weight: Axial, points 19
22
Strength to Weight: Bending, points 23
21
Thermal Diffusivity, mm2/s 8.2
4.6
Thermal Shock Resistance, points 24
22

Alloy Composition

Carbon (C), % 0 to 0.080
0.15 to 0.2
Chromium (Cr), % 0
26 to 29
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
68.5 to 73.7
Manganese (Mn), % 0
0 to 1.0
Nitrogen (N), % 0 to 0.030
0.15 to 0.25
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 99.095 to 100
0
Residuals, % 0 to 0.4
0