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You should choose titanium Grade 2 Round Bar for corrosion resistance because it forms a thin, self-repairing oxide film that protects the metal in seawater, chloride solutions, and many process chemicals. This commercially pure grade, UNS R50400, also offers a useful balance of ductility, weldability, and moderate strength, with a density of about 4.51 g/cm³. Compared with common stainless steels, it can lower maintenance and replacement costs in severe marine and chemical service. Shaanxi CXMET Technology Co., Ltd. supplies this grade from China. In this guide, I explain how the material works, how it compares with other bars, and what to check before you buy.

Understanding Titanium Grade 2 Round Bar and Its Corrosion Resistance

Titanium Grade 2 Round Bar: A Practical Overview for B2B Buyers

One name for titanium Grade 2 Round Bar is UNS R50400. It is the purest titanium that can be bought. It has at least 99.2% Ti in it. This grade is called the "workhorse grade" by metalworkers because it doesn't rust and can be bent and welded. It weighs 4.51 grams per cubic centimeter, which is about 40% less than carbon steel and a lot less than stainless steel, which weighs 8 grams per cubic centimeter. When a bar is bought, it is cut into parts for ships or factories, fasteners, fittings, valves, and shafts. Before you say yes, make sure you look at the standard, the product's state, its size, and its approved mechanical qualities. Then look at the material's chemical makeup, tracking records, heat number, and test findings.

How the Oxide Film Protects Titanium Grade 2

A very thin film of titanium oxide, only a few nanometers thick, keeps it from rusting. It forms almost right away when air or water hits the metal. When the film gets scratched, the oxygen in the air fixes it fast. Because it can fix itself, titanium Grade 2 Round Bar works well in seawater, saltwater, and many chloride solutions. This kind of weather can cause pitting in stainless steels. Based on our Grade 2 product data, the film also stays strong when exposed to nitric acid and chromic acid, which are oxidizing agents. This property is good because the bar's surface stays safe over time. This feature helps with heat exchangers, desalination systems, and gear that is far away.

Where Corrosion Limits Apply?

Metal can't handle everything; that's what I always tell people who buy it. Things like temperature, concentration, flow, air, layers, and the shape of the cracks can all change how well something works. Electromagnetism can happen when two metals touch, and the less honest metal usually gets hurt. There are some chemicals that scientists need to learn more about. Some of these are chemicals that lower the pH, fluorides, dry chlorine, and very concentrated chemicals. Cracks that are very tight under seals or screws can also damage one area when it is hot. The surface should also be cleaned. Rough spots on metal can be caused by iron from steel tools or dust, so people who work in factories should be careful and keep their tools clean. We can help you figure out if titanium Grade 2 Round Bar is the right tool for the job if you tell us about the heat, shape, and type of fluid.

Comparing Materials and Meeting Standards

Titanium Grade 2 vs. Grade 1 and Grade 5

The mark is based on how strong it is and how easy it is to make. As per ASTM B348, the following grades have different tensile strengths: Grade 1 has 240 MPa, Grade 2 has 345 MPa, and Grade 5 (Ti-6Al-4V) has 895 MPa. It is stronger than Grade 1, but it can still be shaped (it can only stretch 20%). It's harder to shape and join Grade 5 steel, but it's stronger. Parts that will be heavy should be made of Grade 5, and parts that will be near chemicals should be made of Grade 2. Titanium Grade 2 Round Bar is usually the best choice for parts that need to be adjusted, like shafts, fittings, and heat exchangers. If you do that, you can also save money on steel and grinding.

Titanium vs. Stainless Steel and Nickel Alloys

It's not as heavy as steel, but types 304 and 316 can get stress rust cracks and pits when they are near warm salt. Titanium is pricier to buy, but its low density and long service life can lower its total cost in marine and chloride-rich jobs, where it takes less time to fix parts and do work. Usually, nickel metals are the best choice because they can handle higher temperatures and some reducing acids better. You should look at more than just the price per unit when you compare. You should consider things like the chance of corrosion, the mechanical load, the amount of work needed to machine it, its availability, its certification, its service life, and the total cost of delivery. It's often clear from that full view where titanium Grade 2 Round Bar works best and where another metal would work better.

Standards, Certification, and Quality Documentation

When the rules are clear, mistakes don't cost a lot of money. We follow ASTM B348, AMS 4921, and ASME SB348 when we make our titanium Grade 2 Round Bar. Part of ASTM F67 is surgical devices made of titanium that has not been alloyed. Medical buyers should make this clear in their question. To keep your grades straight, always add UNS R50400. It says what chemicals are in it, how strong it is, how big it is, what the standard is, and what the inspection results were. All of these things are written on a real mill certificate. We have checks from ISO 9001, SGS, and EN 10204 3.1. It's also a good idea to see if the provider can track, review, export, and keep the original mill records. These checks will help you confirm that the items in the box match the certificate in your file.

Sizes, Manufacturing Routes, and Fabrication

Titanium Grade 2 Round Bar Sizes, Dimensions, and Weight Planning

Our sizes range from 3 mm to 300 mm, and our widths range from 1000 mm to 6000 mm. You can get lengths that aren't shown. Check that the diameter figure you are given shows the standard size, the range of sizes, the cross-sectional area, the weight per meter, and the state of the supply. You can figure out how heavy something is by its size and the density, which is 4.51 g/cm³. A 50 mm bar weighs about 8.9 kg per meter before it is tweaked. Shipping costs depend on cutting space, packing, and surface smoothness. You should write down the maximum length, the end finish, the removal of burrs, the marking, and the inspection time on the order for cut-to-length wood when you place it. To send things, please let us know right away if you need boxes, protective film, or labels.

Manufacturing Routes and Surface Finish Options

Our titanium Grade 2 Round Bar is hot-rolled, which is a good way to make thick bars and heavy pieces. Because they are cold-drawn and have soft sides, our precision-ground bars can be used in very precise designs. The specs can be H9, H10, or anything else the customer wants. We can smooth, pickle, turn, or centerless grind the metal. For hinges, locks, and medical parts, it's important to know how rough something is. That is, what was the Ra value? How straight is it? What tests were done, like an ultrasonic check? It's also important to keep things clean because iron and carbon steel dust can make rust less strong. On the order form, you should write down what you need for cleaning, cover film, and packaging.

Machining, Welding, and Fabrication Tips

Always be careful with shops that know how to make, weld, shape, drill, thread, and bend titanium Grade 2 Round Bar. Titanium isn't very good at moving heat around, so it gathers around the edges. Cut slowly, use sharp tools, a steady feed, a lot of coolant, and get rid of chips well to keep the work from getting too hard and galling. Before you weld, you should clean the joint and cover it with argon or helium so that oxygen, nitrogen, and hydrogen don't weaken the bond. Grade 2 doesn't get harder when it rains as Grade 5 does, but it can be burned or used to relieve stress. Watch out for thread galling, fill in any gaps, use the right lubricants, and make sure the parts can be joined together galvanically.

Applications and CXMET Product Details

Application Guide: When Titanium Grade 2 Round Bar Is the Right Choice?

For jobs that need something strong that won't rust, grade 2 is a good choice. Heat exchangers and condensers, chemical processing tanks and pipes, evaporation and saltwater systems, power generation equipment, aerospace parts, medical devices, electrolytic and anodizing equipment, and parts of buildings that get wet are some of the things that it is used for most of the time. Bars are used to make parts for pumps, valve stems, fittings, bolts, and shafts. Since it's not magnetic, doesn't hold water, and isn't dense, it lasts longer and needs less upkeep. It can be used in chloride solutions, nitric and chromic acid, sulfuric and hydrochloric acid that has been diluted, and salty, wet air. It can handle heat up to 400 °C. For bigger loads, Grade 5 might be better. Is the chemical very harsh? If so, you might want to look into nickel metals or other materials.

CXMET Specifications at a Glance

Here are the main specifications for our titanium Grade 2 Round Bar, as listed in our product data.

Item	Detail
Brand / Origin	CXMET / China
Grade / Technique	GR2 (UNS R50400), hot-rolled
Standards	ASTM B348, AMS 4921, ASME SB348
Purity	Minimum 99.2% Ti
Diameter / Length	3–300 mm / 1000–6000 mm or custom
Tensile / Yield / Elongation	Min 345 MPa / 275 MPa / 20%
Finish / Tolerance	Polished, pickled, turned, centerless ground / H9, H10, or custom
Certification	ISO 9001, SGS, EN 10204 3.1
Application / Package	Industrial, medical / as per your requirements

Please confirm these details against your drawing, since custom sizes and finishes are available.

Customization Options for Specialized Duty

It's not big enough for lots of projects. We start with models or CAD files and make parts that are different lengths and widths. We then finish them in different ways, like by passivating, polishing, or sandblasting. We can also give you precision-ground bars for work that needs to meet strict standards. You can also have a third party test and check the quality of our products if you need to. We can also provide OEM and private label services to partners all over the world. In 2005, we started our business in the China Titanium Valley. It covers 50,000 square meters and has more than 80 skilled technicians working in it. Tin, nickel, tantalum, niobium, tungsten, molybdenum, zirconium, and other metals are what we work with. Let us know how you plan to use the titanium Grade 2 Round Bar and send us a picture of yourself. After that, we'll give you a good way to make it.

How to Buy from an International Supplier?

Build a Complete Technical Request

Making a full request is the first thing you need to do to buy something good. Remember to include the Grade 2 or UNS R50400, the diameter, the length, the number, the tolerance, the surface finish, the production state, the testing needs, the verification, the address, and the Incoterms. You can also add the customer standard, ASTM, EN, or ISO. What is the name of the building or port where the goods will be received in the US? Write it down, along with any marking rules that the receiving team needs to follow. Because of this, the supplier can be sure the titanium Grade 2 Round Bar is good for the job. Let them know what kind of fluid, how hot it is, and how much pressure is being used. CAD or drawing files are even better when you need to make things. They won't have to guess about things they don't know if you give them enough information. You can get a price faster this way.

Compare Quotes and Confirm Supply Terms

Get a price list from each source for the materials, the work that needs to be done, the cutting, the inspection, the packing, the shipping, and the supplies. This list shows you deals that are all the same. You can pick the best one for you. Check if the item is in stock, how long it takes to make, where it comes from, how to pay, and if it can be sent outside China. Get a price based on a term like FOB or CIF so it's clear who pays for the shipping. We pack these bars however you tell us to in China. Because these things affect the price, a clear quote also lists the amount of correctness, the finish on the surface, and the approval. Different prices may seem very low at times. But you should ensure that the deal includes the same tests, grade, and standard. Your plan and budget will be safe if you match the scope.

Verify Before Shipment

Before the cargo leaves, review the certificates, heat markings, dimensions, quantities, and packaging against your purchase order. The bar number should match the test report number. Before sending the goods for important jobs, please ensure you obtain permission for a sample, a third-party check, or proof. If you ask, we can have a third party verify and test the quality of our work. When the titanium Grade 2 Round Bar arrives, make sure that the markings can be read and that the bar's length and width match what it says on the seal. Please ensure that the papers list the correct standard, such as ASTM F67, if the order is for medicines. You should use measurements and pictures to show any differences so that everyone can figure it out quickly. When you're being checked out or trying to figure out what went wrong, keep the mill certificate with your quality records to show that you own those records.

Conclusion

Titanium Grade 2 Round Bar is used in designs that need to block corrosion because it is strong, bendable, and weldable, and its oxide film is stable and self-repairing. It is also at least 99.2 percent pure. How strong it is and how easy it is to make are both between Grade 1 and Grade 5. It costs more than stainless steel to buy, but it breaks down less often and needs fewer repairs, so that can make up for it. Some of the limits that are still in place are for acids, fluorides, cracks, electrical contact, and temperature. It's important to obey the rules, have the right UNS R50400 identification, full certificates, exact measurements, clean cutting and welding, and make sure the application is carefully looked over before it is approved.

FAQ

Is the titanium Grade 2 round bar suitable for seawater and chloride service?

Many people believe it could work here since the oxide film doesn't mix with the chrome. Before you decide, look for cracks, electrical contact, load, and the weather.

How does Grade 2 differ from Grade 5?

Grade 2 is clean enough for business use, forms well, welds, and doesn't rust. Grade 5 metal is strong, so it works well for parts that will see a lot of use.

What does ASTM B348 cover?

Titanium alloys are used to make the bars and billets covered by ASTM B348. ASTM B348 says that our bars are Grade 2 dense, which means that they weigh 4.51 g/cm³.

Can I machine and weld a Grade 2 bar?

When you machine, use coolant, sharp tools, and slow speeds. To protect the metal while you weld, make sure the joints are clean and use argon or helium.

Do you supply cut-to-length bars?

Yes. You can cut them to any length you want, or we have ones that range from 1000 mm to 6000 mm. Please send the product type, standard, thickness, length, number, tolerances, finish, and intended use.

Request a Titanium Grade 2 Round Bar Quote

Email sales@cxmet.com with the grade, standard, size, number, finish, and purpose of the item. Our company is from China, and we sell titanium Grade 2 Round Bar. We'll make sure the information is correct, give you a clear quote with proof, and show you how to make it. Our tech team can quickly make things to specific lengths and have a third party check them out because they work from sketches. To learn more about the product, please visit https://www.cxmet-tech.com/ or feel free to send your question now.

References

1. ASTM International, Standard Specification for Titanium and Titanium Alloy Bars and Billets (ASTM B348/B348M), 2019.

2. ASTM International, Standard Specification for Unalloyed Titanium, for Surgical Implant Applications (ASTM F67), 2013.

3. Donachie, M. J., Titanium: A Technical Guide, 2nd Edition, ASM International, 2000.

4. Leyens, C., and Peters, M., Titanium and Titanium Alloys: Fundamentals and Applications, Wiley-VCH, 2003.

5. Schutz, R. W., and Thomas, D. E., "Corrosion of Titanium and Titanium Alloys," ASM Handbook, Volume 13: Corrosion, ASM International, 1987.

6. Boyer, R., Welsch, G., and Collings, E. W. (Eds.), Materials Properties Handbook: Titanium Alloys, ASM International, 1994.