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Titanium Ti-17 vs Ti-6Al-6V-2Sn

Titanium · grade comparison

Titanium Ti-17 and Ti-6Al-6V-2Sn are both titanium grades. Ti-17 is the stronger of the two: yield strength 1,075 MPa (156 ksi) against 980 MPa (142 ksi) for Ti-6Al-6V-2Sn, about 10% more; tensile strength follows at 1,150 MPa (167 ksi) vs 1,050 MPa (152 ksi). In exchange, Ti-6Al-6V-2Sn is the more ductile: elongation 14% versus 10% for Ti-17. Ti-17 runs hotter in service (350°C vs 315°C continuous).

Ti-17Choose it when strength drives the design, or when the part sees heat.

Ti-6Al-6V-2SnChoose it when the part is bent, formed or impact-loaded.

Ti-17 vs Ti-6Al-6V-2Sn: properties

Ti-17Ti-6Al-6V-2Sn

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

112 GPa16.2 Msi
110 GPa16 Msi

Bulk Modulus

104 GPa15.1 Msi
105 GPa15.2 Msi

Tensile Strength (Ultimate)

1,150 MPa167 ksi
1,050 MPa152 ksi

Yield Strength (0.2% offset)

1,075 MPa156 ksi
980 MPa142 ksi

Elongation at Break

10%
14%

Reduction in Area

25%
30%

Compressive Strength

1,150 MPa167 ksi
1,010 MPa146 ksi

Shear Strength

700 MPa102 ksi
690 MPa100 ksi

Fatigue Strength (Endurance Limit)

600 MPa87 ksi
550 MPa79.8 ksi

Fracture Toughness (K_IC)

55 MPa·√m50.1 ksi·√in
60 MPa·√m54.6 ksi·√in

Charpy V-Notch Impact (RT)

17 J12.5 ft·lbf
19 J14 ft·lbf

Hardness, Rockwell C

37 HRC
36 HRC

Hardness, Vickers

365 HV
355 HV

Hardness, Brinell

—
340 HB

Same in both: Shear Modulus 42.5 GPa6.2 Msi · Poisson's Ratio 0.32

Physical

Density and transition temperatures.

Density

4.65 g/cm³0.17 lb/in³
4.54 g/cm³0.16 lb/in³

Melting Point (Solidus)

1,600°C2,912 °F
1,690°C3,074 °F

Liquidus Temperature

1,650°C3,002 °F
1,705°C3,101 °F

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

7 W/m·K4 BTU/hr·ft·°F
6.6 W/m·K3.8 BTU/hr·ft·°F

Specific Heat Capacity

500 J/kg·K0.12 BTU/lb·°F
544 J/kg·K0.13 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

9.4 µm/m·K5.2 µin/in·°F
9.1 µm/m·K5.1 µin/in·°F

Latent Heat of Fusion

325 J/g140 BTU/lb
365 J/g157 BTU/lb

Max Service Temperature (continuous)

350°C662 °F
315°C599 °F

Min Service Temperature

-100°C-148 °F
-196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

1.7×10⁻⁶ Ω·m66.9 µΩ·in
1.57×10⁻⁶ Ω·m61.8 µΩ·in

Electrical Conductivity

—
1.1 % IACS

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

85 / 100
82 / 100

Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

16 / 100
17 / 100

Machinability Rating (AISI 1212 = 100 %)

15%
20%

Weldability

30 / 100
35 / 100

Formability (cold)

15 / 100
20 / 100

Brazeability / Solderability

35 / 100
45 / 100

Polishability

70 / 100
65 / 100

Castability

—
30 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

680 MJ/kg292,348 BTU/lb
690 MJ/kg296,647 BTU/lb

Embodied Carbon (primary production)

42 kg CO₂/kg
45 kg CO₂/kg

Embodied Water

500 L/kg59.9 gal/lb
900 L/kg108 gal/lb

Typical Recycled Content

20%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

247 kN·m/kg
231 kN·m/kg

Specific Stiffness (E / density)

24.1 MN·m/kg
24.2 MN·m/kg

Modulus of Resilience

5,159 kJ/m³
4,365 kJ/m³

Thermal Diffusivity

3 mm²/s
2.7 mm²/s

Thermal Shock Resistance Index

8
7

Strength versus weight

Yield strength against density for every titanium grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.

3005007001,0004.555.5Density (g/cm³)Yield strength (MPa) — log scaleTi-6Al-6V-2SnTi-17

Manufacturing and finishing

CapabilityTi-17Ti-6Al-6V-2Sn
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Both take the same 1 finish: Plasma Spray.

Ti-17 vs Ti-6Al-6V-2Sn — frequently asked

Is Ti-17 stronger than Ti-6Al-6V-2Sn?

Yes. Ti-17 has a typical yield strength of 1,075 MPa (156 ksi) against 980 MPa (142 ksi) for Ti-6Al-6V-2Sn — about 10% more. Tensile strength is 1,150 MPa (167 ksi) vs 1,050 MPa (152 ksi).

Which is cheaper, Ti-17 or Ti-6Al-6V-2Sn?

Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which welds better, Ti-17 or Ti-6Al-6V-2Sn?

Ti-6Al-6V-2Sn. Its weldability rates fair (35/100) against poor (30/100) for Ti-17.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Ti-17 and Ti-6Al-6V-2Sn side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.

Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.