Titanium Grade 4, also known as Ti-CP Grade 4, is a well-known group of alloys with amazing corrosion resistance. In addition, this alloy has a high strength-t0weight ratio. Its chemical base of titanium and the oxygen, iron, carbon, and nitrogen make up for the relatively small amount in the overall. Most of all, Ti-4 Grade is extensively used in the aerospace industry, for the manufacture of medical devices and for marine applications. Titanium, Grade 4, is very well welded and deformed, thus making it perfect for intricately designed pieces. Differently from alloyed titanium, Grade 4 properties allow it to sustain an amazingly high ductility and be cold formed even in its raw form. The combination of high strength mechanical and low weight properties makes this material the closest in specifications to Grade 2 titanium, proving impressive durability and low weight qualities. There are a multitude of online tables, charts, diagrams and PDF documents with complete details of Grade 4 Titanium's chemical composition, grades and applications, which is a big support for engineers and manufacturers who aim to decide on an ultimate choice of material for the particular project.
Grade 4 titanium is a predominantly titanium metal that has an impressive resilience to corrosion and a remarkably high-to-low ratio for its weight. Its main chemical composition typically comprises of titanium (Ti) with parts of oxygen (O) and nitrogen (N), carbon (C), hydrogen (H) and iron (Fe). Unlike the other titanium types, Grade 4 does not contain any or comparatively low amounts of other elements such as aluminum and vanadium. It is typically nominated with the superfluous grade of resistance to corrosion which is applicable in applications where chemical processing, marine environments, and aerospace components are used. According to ASTM B348 and ASTM B265, it is an ASTM standard.
Elements | Titanium, Ti | Iron, Fe | Oxygen, O | Carbon, C | Nitrogen, N | Hydrogen, H |
---|---|---|---|---|---|---|
Min (%) | - | - | - | - | - | - |
Max (%) | ≥ 98.6 | ≤ 0.50 | ≤ 0.40 | ≤ 0.080 | ≤ 0.050 | ≤ 0.015 |
Advantages:
Corrosion Resistance: Withstands harsh environments without corroding easily.
Strength: Tensile strength at least 75% greater than Grade 5 titanium alloy and 45% lighter than steel.
Ductility: High ductility makes it easier to form and fabricate.
Weldability: Easily welded using conventional methods like shielded metal arc welding.
Disadvantages:
Cost: Relatively higher cost compared to some other titanium grades.
Machinability: Difficult to machine, requires sharp tools and precise methods.
Availability: Less readily available compared to other titanium grades.
Application Limitations: Suitable only where higher strength than Grade 2 is needed, but not the highest available.
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