AMS4901 CP Grade 4 Titanium Plate and Sheet
- Commercial pure grade 4 (CP Grade 4)
- Annealed condition
- Yield Strength: 70 ksi (485 MPa)
- High Strength
- Excellent Corrosion Resistance
- Good Weldability
- Biocompatible
- Good Formability
Features
AMS4901 (CP Grade 4 Titanium) Titanium Sheet, Strip, And Plate, Commercially Pure, Annealed, 70.0 Ksi (485 MPa)
Chemical Composition of AMS4901 CP Grade 4 Titanium Plate and Sheet (wt.%)
| Element | min | max |
| Iron | – | 0.50 |
| Oxygen | – | 0.40 |
| Carbon | – | 0.08 |
| Nitrogen | – | 0.05 (500 ppm) |
| Hydrogen | – | 0.015 (150 ppm) |
| Other Elements, each (3.1.1) | – | 0.10 |
| Other Elements, total (3.1.1) | – | 0.30 |
| Titanium | remainder | |
Mechanical Properties of AMS4901 CP Grade 4 Titanium Plate and Sheet
| Property | Value |
| Tensile Strength, minimum | 80 ksi (552 MPa) |
| Yield Strength at 0.2% Offset | 70 to 95 ksi (483 to 655 MPa) |
| Elongation in 2 Inches (50.8 mm) or 4D, minimum | 15% |
Bending Parameter
| Nominal Thickness (Inch) | Nominal Thickness (Millimeters) | Bend Factor |
| Up to 0.070, incl | Up to 1.78, incl | 2.5 |
| Over 0.070 to 0.1875, excl | Over 1.78 to 4.762, excl | 3 |
Technical Specifications
| Specification | Value |
| Standard | AMS4901 Titanium Sheet, Strip, And Plate, Commercially Pure, Annealed, 70.0 Ksi (485 MPa) |
| Grade | Grade 4 |
| Melting Practice | Alloy shall be produced by electron beam cold hearth or plasma arc cold hearth melting method or multiple melting with the final melting cycle under vacuum. When multiple melting is used, the first melt shall be made using a vacuum consumable electrode, non-consumable electrode, electron beam cold hearth, or plasma arc cold hearth melting practice. The subsequent melt or melts shall be made using vacuum arc remelting (VAR) practice. Alloy additions are not permitted in the final remelt cycle. |
| Type | Titanium Sheet, Strip, and Plate |
| Dimension | Strip: Width 25.4-1219.2mm x Thickness 0.41-4.75mm |
| Sheet: Width 1000-2000mm x Thickness 0.41-4.75mm | |
| Plate: Width 1000-2000mm x Thickness 4.75-101.6mm | |
| Density | 4.51g/cm³ |
| Condition | Sheet and Strip: Hot rolled with or without subsequent cold reduction, annealed, descaled, and leveled, having a surface appearance comparable to a commercial corrosion-resistant steel No. 2D finish. Plate: Hot rolled, annealed, descaled, and flattened, having a surface appearance comparable to a commercial corrosion-resistant steel No. 1 finish. Plate products shall be produced using standard industry practices designed strictly for producing plate stock to the procured thickness. Bar, billet, forgings, or forging stock shall not be supplied in lieu of plate. |
| 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: Offers the highest strength among commercially pure titanium grades.
Excellent corrosion resistance: This is especially true in seawater, oxidizing environments, and various chemicals.
Good Weldability: Facilitates fabrication and joining of components.
Biocompatible: Suitable for medical implants and instruments.
Good Formability: Allows for shaping into complex parts.
Packing
Packed in plywood boxes or on pallets.
Application
Pressure vessels and tanks: Grade 4’s higher strength suits pressure vessels, reactors, and tanks in chemical processing and storage.
Heat exchangers: Its corrosion resistance and strength are valuable in heat exchanger applications involving high pressures or corrosive fluids.
Piping systems: Used for high-pressure piping systems carrying corrosive chemicals.
Aircraft structural components: While less common than Ti-6Al-4V alloys, Grade 4 can be used for less critical structural parts requiring good formability and corrosion resistance.
Marine components: Suitable for marine hardware, fasteners, and structural components exposed to seawater due to its corrosion resistance and strength.
Orthopedic implants: Grade 4’s higher strength makes it a potential option for load-bearing orthopedic implants like bone plates and screws, particularly in cases where higher strength is required.
Dental implants: They can be used for dental implants and instruments due to their biocompatibility and corrosion resistance.
High-performance automotive parts: Used for specialized components like exhaust systems and suspension parts requiring high strength and corrosion resistance.
Sporting goods: Grade 4 can be used in high-end bicycle frames, golf clubs, and other sporting equipment requiring strength and lightweight properties.
