Ti 6 2 4 2 UNS R54620 UNS R54621
Titanium 6-2-4-2 is a near-alpha titanium alloy with a good combination of tensile strength, creep strength, and toughness.
(Ti-6Al-2Sn-4Zr-2Mo) Strip*, Coil*, Foil* & Wire, AMS 4975
Description
Titanium 6-2-4-2 is a near-alpha titanium alloy with a good combination of tensile strength, creep strength, and toughness. It is generally intended for high temperature use in environments up to 1000 °F (538 °C).
Applications
Engine applications, afterburner cans, hot airframe components
Chemistry Typical
Titanium: Balance
Aluminum: 5.50-6.50
Tin: 1.80-2.20
Zirconium: 3.60-4.40
Molybdenum: 1.80-2.20
Silicon: 0.06-0.13
Iron: 0.25 max
Oxygen: 0.15 max
Carbon: 0.08 max
Nitrogen: 0.010-0.0125
Residuals each 0.10 max, total 0.40 max
Common Titanium Grade Names
| Name | Code | Description 1 | Description 2 | ASTM | AMS | UNS |
| Titanium 6-2-4-2 | TI624 | Composition similar to R56420 | Timetal 6-2-4-2 | 4919 |
Physical Properties
Density: 0.164 lbs/in3, 4.54 g/cm3
Electrical Resistivity: 72.8 - 74.8 µ½•in, 1.85 - 1.90 µ½•m
Specific Heat Capacity: 0.120 BTU/lb-°F, 0.502 J/g-°F
Thermal Conductivity: BTU-in/hr-ft2-°F (W/m-K):
48.0 (6.92)
Mean Coefficient of Thermal Expansion: µin/in-°F (µm/m-°C): 32.0 - 212 °F (0 - 100 °C): 4.28 (7.70)
Magnetic Permeability Nonmagnetic Non-magnetic
Modulus of Elasticity: ksi (MPa)
16.5 x 103 (11.4 x 103) in tension
Melting Point: 2890 - 3120 °F (1588 - 1716 °C)
Forms
Strip, Foil, Ribbon: Inquire with Ulbrich Stainless Steel
Wire: Inquire with Ulbrich Shaped Wire
Mechanical Properties at Room Temperature
Properties: Annealed (Typical)
Ultimate Tensile Strength: 135 KSI (930 MPa )
Yield Strength (0.2% offset): 125 KSI (862 MPa )
Elongation: 8% Min
Additional Properties
Corrosion Resistance
Refer to NACE (National Associate of Corrosion Engineers) for recommendations.
Finishes
Strip, Foil, Ribbon: Inquire with Ulbrich Stainless Steel Wire: Inquire with Ulbrich Wire
Welding
For best results refer to: SSINA's "Welding of Stainless Steels and Other Joining Methods".
Limitation of Liability and Disclaimer of Warranty: In no event will Ulbrich Stainless Steels & Special Metals, Inc., be liable for any damages arising from the use of the information included in this document or that it is suitable for the 'applications' noted. We believe the information and data provided to be accurate to the best of our knowledge but, all data is considered typical values only. It is intended for reference and general information and not recommended for specification, design or engineering purposes. Ulbrich assumes no implied or express warranty in regard to the creation or accuracy of the data provided in this document.
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