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Titanium Grade 26 vs Ti-6Al-2Sn-4Zr-2Mo-0.1Si

Titanium · grade comparison

Titanium Grade 26 and Ti-6Al-2Sn-4Zr-2Mo-0.1Si are both titanium grades. Ti-6Al-2Sn-4Zr-2Mo-0.1Si is the stronger of the two: yield strength 930 MPa (135 ksi) against 380 MPa (55.1 ksi) for Grade 26, about 145% more; tensile strength follows at 1,010 MPa (146 ksi) vs 485 MPa (70.3 ksi). In exchange, Grade 26 is the more ductile: elongation 26% versus 15% for Ti-6Al-2Sn-4Zr-2Mo-0.1Si, and Ti-6Al-2Sn-4Zr-2Mo-0.1Si is harder (320 HB vs 160 HB). Ti-6Al-2Sn-4Zr-2Mo-0.1Si is stiffer (114 GPa vs 103 GPa) and Ti-6Al-2Sn-4Zr-2Mo-0.1Si runs hotter in service (510°C vs 400°C continuous). 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-6Al-2Sn-4Zr-2Mo-0.1SiChoose it when strength drives the design, or when the part sees heat.

Grade 26 vs Ti-6Al-2Sn-4Zr-2Mo-0.1Si: properties

Grade 26Ti-6Al-2Sn-4Zr-2Mo-0.1Si

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

103 GPa14.9 Msi
114 GPa16.5 Msi

Shear Modulus

45 GPa6.5 Msi
44.5 GPa6.5 Msi

Bulk Modulus

110 GPa16 Msi
107 GPa15.5 Msi

Poisson's Ratio

0.34
0.32

Tensile Strength (Ultimate)

485 MPa70.3 ksi
1,010 MPa146 ksi

Yield Strength (0.2% offset)

380 MPa55.1 ksi
930 MPa135 ksi

Elongation at Break

26%
15%

Reduction in Area

45%
33%

Compressive Strength

450 MPa65.3 ksi
970 MPa141 ksi

Shear Strength

320 MPa46.4 ksi
620 MPa89.9 ksi

Fatigue Strength (Endurance Limit)

260 MPa37.7 ksi
520 MPa75.4 ksi

Fracture Toughness (K_IC)

66 MPa·√m60.1 ksi·√in
55 MPa·√m50.1 ksi·√in

Charpy V-Notch Impact (RT)

40 J29.5 ft·lbf
20 J14.8 ft·lbf

Hardness, Brinell

160 HB
320 HB

Hardness, Rockwell B

82 HRB
—

Hardness, Vickers

170 HV
330 HV

Hardness, Rockwell C

—
32 HRC

Physical

Density and transition temperatures.

Density

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

Melting Point (Solidus)

1,660°C3,020 °F
1,650°C3,002 °F

Liquidus Temperature

1,668°C3,034 °F
1,705°C3,101 °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
7 W/m·K4 BTU/hr·ft·°F

Specific Heat Capacity

523 J/kg·K0.12 BTU/lb·°F
460 J/kg·K0.11 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

8.6 µm/m·K4.8 µin/in·°F
7.7 µm/m·K4.3 µin/in·°F

Latent Heat of Fusion

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

Max Service Temperature (continuous)

400°C752 °F
510°C950 °F

Same in both: Min Service Temperature -196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

3.1 % IACS
0.87 % IACS

Electrical Resistivity

5.6×10⁻⁷ Ω·m22 µΩ·in
1.98×10⁻⁶ Ω·m78 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%
18%

Weldability

85 / 100
65 / 100

Formability (cold)

72 / 100
25 / 100

Brazeability / Solderability

40 / 100
35 / 100

Same in both: Castability 30 / 100 · Polishability 70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

650 MJ/kg279,450 BTU/lb
680 MJ/kg292,348 BTU/lb

Embodied Carbon (primary production)

38 kg CO₂/kg
40 kg CO₂/kg

Embodied Water

320 L/kg38.3 gal/lb
800 L/kg95.9 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
222 kN·m/kg

Specific Stiffness (E / density)

22.8 MN·m/kg
25.1 MN·m/kg

Modulus of Resilience

701 kJ/m³
3,793 kJ/m³

Thermal Diffusivity

7 mm²/s
3.4 mm²/s

Thermal Shock Resistance Index

9
8

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-6Al-2Sn-4Zr-2Mo-0.1Si

Manufacturing and finishing

CapabilityGrade 26Ti-6Al-2Sn-4Zr-2Mo-0.1Si
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Both take the same 1 finish: Plasma Spray.

Grade 26 vs Ti-6Al-2Sn-4Zr-2Mo-0.1Si — frequently asked

Is Ti-6Al-2Sn-4Zr-2Mo-0.1Si stronger than Grade 26?

Yes. Ti-6Al-2Sn-4Zr-2Mo-0.1Si has a typical yield strength of 930 MPa (135 ksi) against 380 MPa (55.1 ksi) for Grade 26 — about 145% more. Tensile strength is 1,010 MPa (146 ksi) vs 485 MPa (70.3 ksi).

Which is cheaper, Grade 26 or Ti-6Al-2Sn-4Zr-2Mo-0.1Si?

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-6Al-2Sn-4Zr-2Mo-0.1Si?

Grade 26. Its machinability rates fair (35/100) against poor (18/100) for Ti-6Al-2Sn-4Zr-2Mo-0.1Si; for welding the order is Grade 26 first (excellent, 85/100) then Ti-6Al-2Sn-4Zr-2Mo-0.1Si (good, 65/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in Grade 26 and Ti-6Al-2Sn-4Zr-2Mo-0.1Si 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.