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Titanium Grade 26 vs Ti-8Al-1Mo-1V

Titanium · grade comparison

Titanium Grade 26 and Ti-8Al-1Mo-1V are both titanium grades. Ti-8Al-1Mo-1V is the stronger of the two: yield strength 950 MPa (138 ksi) against 380 MPa (55.1 ksi) for Grade 26, about 150% more; tensile strength follows at 1,000 MPa (145 ksi) vs 485 MPa (70.3 ksi). In exchange, Grade 26 is the more ductile: elongation 26% versus 15% for Ti-8Al-1Mo-1V, and Ti-8Al-1Mo-1V is harder (315 HB vs 160 HB). Ti-8Al-1Mo-1V is lighter (4.37 g/cm³ vs 4.51 g/cm³ for Grade 26) and Ti-8Al-1Mo-1V is stiffer (124 GPa vs 103 GPa). On the shop floor, Grade 26 machines more easily (fair vs poor) and Grade 26 welds better (excellent vs good).

Grade 26Choose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.

Ti-8Al-1Mo-1VChoose it when strength drives the design, or when weight is the constraint.

Grade 26 vs Ti-8Al-1Mo-1V: properties

Grade 26Ti-8Al-1Mo-1V

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

103 GPa14.9 Msi
124 GPa18 Msi

Shear Modulus

45 GPa6.5 Msi
46 GPa6.7 Msi

Bulk Modulus

110 GPa16 Msi
115 GPa16.7 Msi

Poisson's Ratio

0.34
0.32

Tensile Strength (Ultimate)

485 MPa70.3 ksi
1,000 MPa145 ksi

Yield Strength (0.2% offset)

380 MPa55.1 ksi
950 MPa138 ksi

Elongation at Break

26%
15%

Reduction in Area

45%
30%

Compressive Strength

450 MPa65.3 ksi
1,000 MPa145 ksi

Shear Strength

320 MPa46.4 ksi
660 MPa95.7 ksi

Fatigue Strength (Endurance Limit)

260 MPa37.7 ksi
540 MPa78.3 ksi

Fracture Toughness (K_IC)

66 MPa·√m60.1 ksi·√in
70 MPa·√m63.7 ksi·√in

Charpy V-Notch Impact (RT)

40 J29.5 ft·lbf
20 J14.8 ft·lbf

Hardness, Brinell

160 HB
315 HB

Hardness, Rockwell B

82 HRB
—

Hardness, Vickers

170 HV
330 HV

Hardness, Rockwell C

—
33 HRC

Physical

Density and transition temperatures.

Density

4.51 g/cm³0.16 lb/in³
4.37 g/cm³0.16 lb/in³

Melting Point (Solidus)

1,660°C3,020 °F
1,540°C2,804 °F

Liquidus Temperature

1,668°C3,034 °F
1,650°C3,002 °F

Thermal

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

Thermal Conductivity

16.4 W/m·K9.5 BTU/hr·ft·°F
6.5 W/m·K3.8 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

8.6 µm/m·K4.8 µin/in·°F
8.5 µm/m·K4.7 µin/in·°F

Latent Heat of Fusion

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

Max Service Temperature (continuous)

400°C752 °F
450°C842 °F

Min Service Temperature

-196°C-321 °F
-100°C-148 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

3.1 % IACS
0.9 % IACS

Electrical Resistivity

5.6×10⁻⁷ Ω·m22 µΩ·in
1.99×10⁻⁶ Ω·m78.3 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

96 / 100
85 / 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

35 / 100
18 / 100

Machinability Rating (AISI 1212 = 100 %)

30%
20%

Weldability

85 / 100
55 / 100

Formability (cold)

72 / 100
30 / 100

Castability

30 / 100
—

Brazeability / Solderability

40 / 100
45 / 100

Same in both: Polishability 70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

650 MJ/kg279,450 BTU/lb
700 MJ/kg300,946 BTU/lb

Embodied Carbon (primary production)

38 kg CO₂/kg
45 kg CO₂/kg

Embodied Water

320 L/kg38.3 gal/lb
500 L/kg59.9 gal/lb

Same in both: Typical Recycled Content 25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

108 kN·m/kg
229 kN·m/kg

Specific Stiffness (E / density)

22.8 MN·m/kg
28.4 MN·m/kg

Modulus of Resilience

701 kJ/m³
3,639 kJ/m³

Thermal Diffusivity

7 mm²/s
3 mm²/s

Thermal Shock Resistance Index

9
6

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 scaleGrade 26Ti-8Al-1Mo-1V

Manufacturing and finishing

CapabilityGrade 26Ti-8Al-1Mo-1V
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Both take the same 1 finish: Plasma Spray.

Grade 26 vs Ti-8Al-1Mo-1V — frequently asked

Is Ti-8Al-1Mo-1V stronger than Grade 26?

Yes. Ti-8Al-1Mo-1V has a typical yield strength of 950 MPa (138 ksi) against 380 MPa (55.1 ksi) for Grade 26 — about 150% more. Tensile strength is 1,000 MPa (145 ksi) vs 485 MPa (70.3 ksi).

Which is cheaper, Grade 26 or Ti-8Al-1Mo-1V?

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 is easier to machine, Grade 26 or Ti-8Al-1Mo-1V?

Grade 26. Its machinability rates fair (35/100) against poor (18/100) for Ti-8Al-1Mo-1V; for welding the order is Grade 26 first (excellent, 85/100) then Ti-8Al-1Mo-1V (good, 55/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in Grade 26 and Ti-8Al-1Mo-1V 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.