Titanium Grade 4, Sheet, Coil, Bar, Plate, AMS 4901 (CP Grade 4) - UNS R50700

Grade 4 is the strongest of the commercially pure titanium grades, with a minimum yield strength of 480 MPa (70ksi) and has the highest allowable oxygen and iron content of the grades. Grade 4 is commercially pure, also referred to as CP, which means it is unalloyed. Grade 4 titanium features excellent resistance to corrosion and corrosion fatigue as well as high strength.
United Performance Metals stocks coil and sheet sizes 0.012" - 0.080" and plate sizes 0.250" - 0.625". Some of the key applications for this grade include dental and medical implants, airframe and engine components, and chemical processing machinery,
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Inventory Size Ranges for CP Grade 4
Type | Thickness | AMS Standards | ASTM | UNS | Get a Quote |
---|---|---|---|---|---|
Coil | 0.012" - 0.080" | AMS 4901, AMS 4921 | ASTM B 265, ASTM B 348, ASTM F 67 | UNS R50700 | Get a Quote |
Sheet | 0.012" - 0.080" | AMS 4901, AMS 4921 | ASTM B 265, ASTM B 348, ASTM F 67 | UNS R50700 | Get a Quote |
Plate | 0.250" - 0.625" | AMS 4901, AMS 4921 | ASTM B 265, ASTM B 348, ASTM F 67 | UNS R50700 | Get a Quote |
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Characteristics of CP Grade 4
CP Grade 4 has the highest strength of the CP grades, making it competitive with stainless steels for many corrosion resistant applications. The corrosion resistance of CP Ti - Grade 4 is based on the presence of a stable, continuous, tightly adherent oxide layer that forms spontaneously upon exposure to oxygen. If damaged, it reforms readily as long as there is some source of oxygen in the environment. Its strength is on a par with annealed stainless steels, and, in addition, it offers lighter weight and superior corrosion resistance. CP Ti, Grade 4 is not subject to grain boundary embrittlement or sensitization at elevated temperatures.
Working with CP Grade 4
Heat treatments used for CP Ti are annealing and stress relieving. Annealing is used to fully soften the material and remove all residual stresses. Stress relieving is used to remove some or most of the residual stresses from forming, or to recover compressive yield strength after stretching. CP Grade 4 can be hot and cold worked, machined, and welded.
Other industry standards we comply with:
- ASM/MIL-81200
- DFARS Compliant
Common Trade Names
- Grade 4 Titanium
- Gr. 4 Titanium
- CP 4 Titanium
Industry Applications for CP Grade 4
- Jet engine components
- Aerospace fasteners
- Marine and chemical processing and desalinization plants
- Corrosive waste disposal wells
- Pulp and paper production
Chemical Composition
Element | Min | Max | |
---|---|---|---|
N | Nitrogen | - | 0.05 |
C | Carbon | - | 0.08 |
O | Oxygen | - | 0.4 |
Fe | Iron | - | 0.5 |
H | Hydrogen | - | 0.015 |
Ti | Titanium | - | Balance |
- | Other | - | 0.4 |
Physical Properties
Physical Property | T (°F) | T (°C) | Value | Value (SI) |
---|---|---|---|---|
Density | - | - | 0.1630 lb/in³ | 4.512 g/cm3 |
Beta Transus | 1715-1765 | 935-963 | - | - |
Alpha Transus | 1635-1685 | 891-918 | - | - |
Melting (liquidus) Point | 3000-3040 | 1649-1671 | - | - |
Specific Heat | 73 | 23(°F) | 0.1250 Btu/°F | - |
Electrical Resistivity | 73 | 23(°F) | 3.93 μΩ∙in | .100 μΩ∙in |
Modulus of Elasticity | - | - | 15.0 x 10³ ksi | 10.3 x 104 MPa |
Mechanical Properties
Room Temperature Mechanical Properties | UTS, ksi (MPa) | YS, ksi (MPa) | %EI | %RA |
---|---|---|---|---|
Specified Properties | 80 (550) | 70 (480) | 15 | 30 |
Typical Properties | 95-100 (655-690) | 70-92 (480-635) | 20-25 | 38-51 |