AMS4921 CP Grade 4 Titanium Bars, Wire, Forgings, and Rings
- CP Grade 4, Commercially Pure
- Annealed condition
- High strength-to-weight ratio
- Excellent corrosion resistance
- Good biocompatibility
- High fatigue strength
- Good weldability
Features
AMS4921 CP Grade 4 Titanium Bars, Wire, Forgings, and Rings Commercially Pure 70 Ksi (483 MPa) Yield Strength
Chemical Composition (wt.%) of AMS4921 CP Grade 4 Titanium Bars, Wire, Forgings, and Rings
| Element | Min | Max |
| Iron | — | 0.50 |
| Oxygen | — | 0.40 |
| Carbon | — | 0.08 |
| Nitrogen | — | 0.05 (500 ppm) |
| Hydrogen | — | 0.0125 (125 ppm) |
| Other Elements, each (3.1.1) | — | 0.10 |
| Other Elements, total (3.1.1) | — | 0.30 |
| Titanium | remainder | |
Mechanical properties of AMS4921 CP Grade 4 Titanium Bars, Wire, Forgings, and Rings
| Property | Value |
|---|---|
| Tensile Strength | 80 ksi (552 MPa) minimum |
| Yield Strength (0.2% Offset) | 70 ksi (483 MPa) minimum |
| Elongation (in 2 inches or 50mm/4D) | Longitudinal (L): 15%, Long-Transverse (L-T): 12%, Short-Transverse (S-T): 10% |
| Reduction of Area | Longitudinal (L): 30%, Long-Transverse (L-T): 25%, Short-Transverse (S-T): – |
Technical Specifications
| Specification | Value |
| Standard | AMS4921 CP Grade 4 Titanium Bars, Wire, Forgings, and Rings Commercially Pure 70 Ksi (483 MPa) Yield Strength |
| Grade | Commercially pure Grade 4, CP Grade 4 |
| Type | Bar, Wire, Forgings, Rings |
| Dimension | Bar Dia: 0.25 to 12 inches (6.35 to 304.8 mm), Length: up to 20 feet (6096 mm) |
| Wire Dia: 0.020 to 0.500 inches (0.51 to 12.7 mm) | |
| Block: Width: 2 – 24 inches (50 -610mm) x Height: 2 – 24 inches (50-610mm) x Length: 2 – 20 feet (610-6100mm) | |
| Rings: OD: 250-1500mm, ID: 150-1400mm, Height: 20-500mm | |
| Density | 4.51g/cm³ |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Tests | Chemical Composition, Mechanical Properties |
Key properties
High Strength-to-ratio: Offers strength comparable to steel at a significantly lower weight.
Excellent corrosion resistance: Highly resistant to corrosive environments, including saltwater and many chemicals.
Good biocompatibility: Suitable for medical implants due to its inertness within the human body.
High fatigue strength: Withstands cyclic loading and stress without failure.
Good weldability: Can be readily welded using appropriate techniques.
Packing
Packed in plywood boxes.
Applications
Aircraft structural components: Due to its high strength-to-weight ratio and excellent corrosion resistance, AMS 4921 is commonly used for structural parts like airframes, landing gear components, and engine mounts.
Fasteners and bolts: The material’s strength and resistance to fatigue make it ideal for critical fasteners in aircraft assembly.
Hydraulic tubing: CP Grade 4 titanium’s corrosion resistance and ability to withstand high pressures make it suitable for hydraulic lines in aircraft systems.
Implants: The biocompatibility and corrosion resistance of AMS 4921 make it well-suited for medical implants like hip and knee replacements, bone screws, and plates.
Surgical instruments: The material’s strength, durability, and resistance to sterilization make it ideal for surgical instruments.
Boat hulls and fittings: AMS 4921’s resistance to saltwater corrosion makes it ideal for marine applications such as boat hulls, propeller shafts, and rigging components.
Offshore oil and gas equipment: Its strength and corrosion resistance are valuable for components used in offshore drilling and production platforms.
Reactor vessels and piping: The material’s resistance to various chemicals and high temperatures makes it suitable for equipment used in chemical processing plants.
Heat exchangers: AMS 4921’s thermal conductivity and corrosion resistance are valuable for heat exchanger applications.
Other Applications
Automotive components: Used in high-performance vehicles for their strength and weight-saving advantages.
Sporting goods: Because of its high strength and low weight, it is used in bicycle frames, golf clubs, and other sporting equipment.
Architectural applications: Chosen for its aesthetic appeal and corrosion resistance in decorative elements and structural components.
