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Titanium Ti Grade 29 BETA vs Ti Grade 29-STA

Titanium · Ti Grade 29 temper comparison

Ti Grade 29 BETA and Ti Grade 29-STA are two conditions of the same titanium grade, Ti Grade 29: BETA (transformed Beta) versus STA (solution treated and aged). The chemistry is identical, so every difference below comes from the condition. Ti Grade 29-STA is the stronger of the two: yield strength 930 MPa (135 ksi) against 830 MPa (120 ksi) for Ti Grade 29 BETA, about 12% more; tensile strength follows at 1,000 MPa (145 ksi) vs 910 MPa (132 ksi). Ti Grade 29-STA is harder — 350 HB against 320 HB for Ti Grade 29 BETA — which matters for wear surfaces and threads. Ti Grade 29 BETA runs hotter in service (400°C vs 315°C continuous).

Ti Grade 29 BETAChoose it when the part sees heat.

Ti Grade 29-STAChoose it when strength drives the design, or when surface hardness matters.

Ti Grade 29 BETA vs Ti Grade 29-STA: properties

Ti Grade 29 BETATi Grade 29-STA

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

112 GPa16.2 Msi
114 GPa16.5 Msi

Shear Modulus

43 GPa6.2 Msi
44 GPa6.4 Msi

Poisson's Ratio

0.34
0.34

Tensile Strength (Ultimate)

910 MPa132 ksi
1,000 MPa145 ksi

Yield Strength (0.2% offset)

830 MPa120 ksi
930 MPa135 ksi

Reduction in Area

22%
28%

Compressive Strength

950 MPa138 ksi
870 MPa126 ksi

Fatigue Strength (Endurance Limit)

430 MPa62.4 ksi
560 MPa81.2 ksi

Fracture Toughness (K_IC)

90 MPa·√m81.9 ksi·√in
70 MPa·√m63.7 ksi·√in

Charpy V-Notch Impact (RT)

20 J14.8 ft·lbf
27 J19.9 ft·lbf

Hardness, Brinell

320 HB
350 HB

Hardness, Rockwell C

34 HRC
36 HRC

Hardness, Vickers

335 HV
365 HV

Same in both: Bulk Modulus 110 GPa16 Msi · Elongation at Break 11% · Shear Strength 570 MPa82.7 ksi

Physical

Density and transition temperatures.

Same in both: Density 4.43 g/cm³0.16 lb/in³ · Melting Point (Solidus) 1,604°C2,919 °F · Liquidus Temperature 1,660°C3,020 °F

Thermal

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

Thermal Conductivity

6.9 W/m·K4 BTU/hr·ft·°F
6.7 W/m·K3.9 BTU/hr·ft·°F

Specific Heat Capacity

560 J/kg·K0.13 BTU/lb·°F
526 J/kg·K0.13 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

8.8 µm/m·K4.9 µin/in·°F
8.7 µm/m·K4.8 µin/in·°F

Latent Heat of Fusion

365 J/g157 BTU/lb
290 J/g125 BTU/lb

Max Service Temperature (continuous)

400°C752 °F
315°C599 °F

Min Service Temperature

-196°C-321 °F
-253°C-423 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

1.7×10⁻⁶ Ω·m66.9 µΩ·in
1.71×10⁻⁶ Ω·m67.3 µΩ·in

Same in both: Electrical Conductivity 1 % IACS

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

94 / 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

18 / 100
16 / 100

Machinability Rating (AISI 1212 = 100 %)

20%
16%

Weldability

72 / 100
80 / 100

Formability (cold)

22 / 100
20 / 100

Castability

40 / 100
45 / 100

Brazeability / Solderability

35 / 100
40 / 100

Same in both: Polishability 70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Carbon (primary production)

37 kg CO₂/kg
45 kg CO₂/kg

Embodied Water

1,200 L/kg144 gal/lb
800 L/kg95.9 gal/lb

Same in both: Embodied Energy (primary production) 650 MJ/kg279,450 BTU/lb · Typical Recycled Content 25%

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 Grade 29

Ti Grade 29 BETA vs Ti Grade 29-STA — frequently asked

Is Ti Grade 29-STA stronger than Ti Grade 29 BETA?

Yes. Ti Grade 29-STA has a typical yield strength of 930 MPa (135 ksi) against 830 MPa (120 ksi) for Ti Grade 29 BETA — about 12% more. Tensile strength is 1,000 MPa (145 ksi) vs 910 MPa (132 ksi).

Which condition does FabDigit quote by default, BETA or STA?

Annealed is the default Ti Grade 29 condition in the FabDigit quote flow (neither BETA nor STA). The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.

Which welds better, Ti Grade 29 BETA or Ti Grade 29-STA?

Ti Grade 29-STA. Its weldability rates very good (80/100) against very good (72/100) for Ti Grade 29 BETA.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Ti Grade 29 BETA and Ti Grade 29-STA 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.