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Titanium Grade 13 vs Grade 26

Titanium · grade comparison

Titanium Grade 13 and Grade 26 are both titanium grades. Grade 26 is the stronger of the two: yield strength 380 MPa (55.1 ksi) against 240 MPa (34.8 ksi) for Grade 13, about 58% more; tensile strength follows at 485 MPa (70.3 ksi) vs 345 MPa (50 ksi). Grade 26 is harder — 160 HB against 130 HB for Grade 13 — which matters for wear surfaces and threads. Grade 26 runs hotter in service (400°C vs 300°C continuous).

Grade 26Choose it when strength drives the design, or when surface hardness matters.

Grade 13 vs Grade 26: properties

Grade 13Grade 26

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

105 GPa15.2 Msi
103 GPa14.9 Msi

Shear Modulus

40 GPa5.8 Msi
45 GPa6.5 Msi

Tensile Strength (Ultimate)

345 MPa50 ksi
485 MPa70.3 ksi

Yield Strength (0.2% offset)

240 MPa34.8 ksi
380 MPa55.1 ksi

Elongation at Break

28%
26%

Compressive Strength

260 MPa37.7 ksi
450 MPa65.3 ksi

Shear Strength

240 MPa34.8 ksi
320 MPa46.4 ksi

Fatigue Strength (Endurance Limit)

190 MPa27.6 ksi
260 MPa37.7 ksi

Fracture Toughness (K_IC)

80 MPa·√m72.8 ksi·√in
66 MPa·√m60.1 ksi·√in

Charpy V-Notch Impact (RT)

60 J44.3 ft·lbf
40 J29.5 ft·lbf

Hardness, Brinell

130 HB
160 HB

Hardness, Rockwell B

72 HRB
82 HRB

Hardness, Vickers

140 HV
170 HV

Same in both: Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.34 · Reduction in Area 45%

Physical

Density and transition temperatures.

Melting Point (Solidus)

1,650°C3,002 °F
1,660°C3,020 °F

Liquidus Temperature

1,675°C3,047 °F
1,668°C3,034 °F

Same in both: Density 4.51 g/cm³0.16 lb/in³

Thermal

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

Thermal Conductivity

17.5 W/m·K10.1 BTU/hr·ft·°F
16.4 W/m·K9.5 BTU/hr·ft·°F

Specific Heat Capacity

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

Latent Heat of Fusion

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

Max Service Temperature (continuous)

300°C572 °F
400°C752 °F

Min Service Temperature

-250°C-418 °F
-196°C-321 °F

Same in both: Thermal Expansion (CTE, 20–100 °C) 8.6 µm/m·K4.8 µin/in·°F

Electrical

Conductivity and insulation.

Same in both: Electrical Conductivity 3.1 % IACS · Electrical Resistivity 5.6×10⁻⁷ Ω·m22 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

93 / 100
96 / 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

38 / 100
35 / 100

Weldability

88 / 100
85 / 100

Castability

—
30 / 100

Same in both: Machinability Rating (AISI 1212 = 100 %) 30% · Formability (cold) 72 / 100 · Brazeability / Solderability 40 / 100 · Polishability 70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

660 MJ/kg283,749 BTU/lb
650 MJ/kg279,450 BTU/lb

Embodied Carbon (primary production)

45 kg CO₂/kg
38 kg CO₂/kg

Embodied Water

1,500 L/kg180 gal/lb
320 L/kg38.3 gal/lb

Same in both: Typical Recycled Content 25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

76 kN·m/kg
108 kN·m/kg

Specific Stiffness (E / density)

23.3 MN·m/kg
22.8 MN·m/kg

Modulus of Resilience

274 kJ/m³
701 kJ/m³

Thermal Diffusivity

7.5 mm²/s
7 mm²/s

Thermal Shock Resistance Index

7
9

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 13Grade 26

Manufacturing and finishing

CapabilityGrade 13Grade 26
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Both take the same 1 finish: Plasma Spray.

Grade 13 vs Grade 26 — frequently asked

Is Grade 26 stronger than Grade 13?

Yes. Grade 26 has a typical yield strength of 380 MPa (55.1 ksi) against 240 MPa (34.8 ksi) for Grade 13 — about 58% more. Tensile strength is 485 MPa (70.3 ksi) vs 345 MPa (50 ksi).

Which is cheaper, Grade 13 or Grade 26?

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.

When should I choose Grade 13 over Grade 26?

Pick Grade 26 when strength drives the design, or when surface hardness matters.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Grade 13 and Grade 26 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.