Beta 21S (Grade 21, UNS R58210) is a heat-treatable, metastable β-titanium alloy with a typical composition of Ti-15Mo-3Al-2.7Nb-0.25Si. This high-strength, oxidation-resistant titanium alloy was developed for the aerospace industry and offers good cold formability and weldability.
Compared to traditional α+β titanium alloys, Beta 21S offers higher strength, better creep resistance, and improved resistance to high-temperature oxidation. It also exhibits good resistance to aerospace hydraulic fluids, making it suitable for high-performance applications such as aerospace structural components, fasteners, and metal matrix composites.
Beta 21S is an age-hardenable, metastable β-titanium alloy. Through heat treatment, aging, and cold working, various combinations of strength and ductility can be achieved, making it suitable for components that require high strength, formability, and resistance to environmental exposure.
Used for: aircraft engine components, aircraft structural parts, high-strength fasteners, and hydraulic system components.
Beta 21S can be used as a matrix material for metal-matrix composites.
It can be used to manufacture bolts, screws, rivets, and fasteners.
Beta 21S exhibits good resistance to hydraulic fluids used in the aerospace industry.
| диаметр(mm) | Длина (настраиваемая) |
| Ø0.5мм | Customized according to customer requirements |
| Ø0.889мм | Customized according to customer requirements |
| Ø1.00-2.00 мм | Customized according to customer requirements |
| Ø2.00-3.00 мм | Customized according to customer requirements |
| Ø3.00-4.00 мм | Customized according to customer requirements |
| Ø4.00-5.00 мм | Customized according to customer requirements |
| Condition | Tensile strength, Rm | Yield strength, Rp0.2 | Elongation, A |
|---|---|---|---|
| Annealed | ≥1068 MPa | ≥758 MPa | ≥12% |
| Work-hardened | ~900–1200 MPa | ~800–1100 MPa | ~5–15% |
| Solution-treated and aged | ~1000–1250 MPa | ~900–1150 MPa | ~4–12% |
| Aged | up to ≥1170 MPa | up to ≥1100 MPa | ~4–10% |
