Grade 2 (R50400) Titanium Square Bar
Grade 2 titanium square bar, also known as CP (Commercially Pure) Grade 2 Square Bar, is a solid square cross-section bar made from pure titanium (UNS R50400). It offers excellent corrosion resistance, moderate strength, good weldability, and fabricability.
Looking for corrosion-resistant, lightweight, and easy-to-machine titanium alloy square bar? Our Grade 2 titanium square bar conforms to ASTM B348 and is in stock, cut to length, and shipped worldwide. Full material certification and traceability are provided.
Why choose Grade 2 titanium square bar?
- The corrosion rate in natural seawater is less than 0.00013mm/year, and it can resist corrosion from chlorides, moisture and various chemical media for a long time.
- Tensile strength ≥ 345 MPa, yield strength ≥ 275 MPa, and the density is only 4.51 g/cm³, achieving a balance between lightness and structural performance.
- The material hardness is moderate (Brinell hardness ≤ 80 HRB), easy to perform conventional machining such as turning, milling, drilling, etc.
- It supports multiple welding methods such as TIG and MIG. No preheating is required during the welding process, and the joint performance is stable and reliable.
- The relative magnetic permeability is less than 1.00005, and the material is completely non-magnetic, making it suitable for high-end equipment that is sensitive to magnetic interference.
- It has passed ISO 10993 biocompatibility certification and is suitable for use in human contact equipment and precision instrument components.
Popular Grade 2 titanium square bar types
Forged titanium square bar
Size range: conventional side length is 6–400 mm, lengths up to 3000–6000 mm.
Features: It is formed by multiple hammer forging at high temperature, with dense grains and excellent fatigue resistance and impact resistance.
Hot rolled Grade 2 titanium square bar
Size range: Side lengths typically range from 6–130 mm, length up to 6000 mm, suitable for large quantities of conventional structural parts.
Features: Hot rolling forming, high production efficiency, surface roughness is generally Ra 3-6 µm, moderate processing tolerance.
Extruded Grade 2 Titanium Square Bar
Size range: side length is generally 6–200 mm, the maximum length can reach 6000 mm.
Features: High temperature extrusion molding, regular cross section, good dimensional consistency, suitable for subsequent CNC processing.
Precision ground Grade 2 titanium square bar
Size range: side length coverage 3–100 mm, tolerance controllable to ±0.127 mm, support customized ultra-precision specifications.
Features: After precision processing such as turning and grinding, the surface finish can be as low as Ra 0.2 µm, highly consistent in size.
Gr2 titanium square bar in stock
We stock titanium alloy square bars with side lengths ranging from 6 mm to 100 mm, covering common imperial sizes such as 1/4", 3/8", and 1". Custom cuts are available to meet diverse application scenarios.
| Product | Side length (mm) | Length range (mm) |
|---|---|---|
| Gr2 titanium square bar | 6×6 | 100 – 3000 |
| Gr2 titanium square bar | 8×8 | 100 – 3000 |
| Gr2 titanium square bar | 10×10 | 100 – 3000 |
| Gr2 titanium square bar | 12×12 | 100 – 3000 |
| Gr2 titanium square bar | 12.7×12.7(1/2″) | 100 – 3000 |
| Gr2 titanium square bar | 14×14 | 100 – 3000 |
| Gr2 titanium square bar | 16×16 | 200 – 3000 |
| Gr2 titanium square bar | 18×18 | 200 – 3000 |
| Gr2 titanium square bar | 20×20 | 200 – 3000 |
| Gr2 titanium square bar | 22×22 | 200 – 3000 |
| Gr2 titanium square bar | 25×25 | 200 – 3000 |
| Gr2 titanium square bar | 25.4×25.4(1″) | 200 – 3000 |
| Gr2 titanium square bar | 30×30 | 300 – 4000 |
| Gr2 titanium square bar | 35×35 | 300 – 4000 |
| Gr2 titanium square bar | 40×40 | 300 – 4000 |
| Gr2 titanium square bar | 45×45 | 300 – 4000 |
| Gr2 titanium square bar | 50×50 | 500 – 5000 |
| Gr2 titanium square bar | 60×60 | 500 – 5000 |
| Gr2 titanium square bar | 65×65 | 500 – 5000 |
| Gr2 titanium square bar | 75×75 | 500 – 6000 |
| Gr2 titanium square bar | 80×80 | 500 – 6000 |
| Gr2 titanium square bar | 90×90 | 1000 – 6000 |
| Gr2 titanium square bar | 100×100 | 1000 – 6000 |
| Gr2 titanium square bar | 120×120 | 1000 – 6000 |
| Gr2 titanium square bar | 150×150 | 1000 – 6000 |
| Gr2 titanium square bar | 180×180 | 1000 – 6000 |
| Gr2 titanium square bar | 200×200 | 1000 – 6000 |
| Gr2 titanium square bar | 250×250 | 1000 – 6000 |
| Gr2 titanium square bar | 300×300 | 1000 – 6000 |
| Gr2 titanium square bar | 350×350 | 1000 – 6000 |
| Gr2 titanium square bar | 400×400 | 1000 – 6000 |
Tolerance reference
To ensure dimensional accuracy and downstream processing compatibility, the Grade 2 Titanium Square Bars supplied by Chalco Titanium are inspected and tolerance controlled in accordance with the international standard ASTM B348-06a after hot rolling, forging or extrusion.
- Hot-rolled titanium square bars with a side length of 25.4 mm (1″) shall have a dimensional tolerance of ±0.25 mm and a squareness deviation of no more than 0.38 mm;
- For smaller sizes such as 12.7 mm (1/2″), the dimensional tolerance is controlled within ±0.18 mm, and Out-of-Square ≤ 0.25 mm.
Dimensional and diagonal tolerances of hot-rolled titanium bars (round and square) (unit: mm)
| Specify side length range (mm) | Dimensional tolerance ± (mm) | Out-of-Square tolerance (mm) |
|---|---|---|
| 6.35 – 7.94 | ±0.13 | 0.2 |
| >7.94 – 10.11 | ±0.15 | 0.23 |
| >10.11 – 11.11 | ±0.18 | 0.25 |
| >11.11 – 15.88 | ±0.20 | 0.3 |
| >15.88 – 20.22 | ±0.23 | 0.3 |
| >20.22 – 25.40 | ±0.23 | 0.3 |
| >25.40 – 28.58 | ±0.25 | 0.38 |
| >28.58 – 31.75 | ±0.28 | 0.41 |
| >31.75 – 34.92 | ±0.30 | 0.46 |
| >34.92 – 38.10 | ±0.36 | 0.58 |
| >38.10 – 50.80 | ±0.51 | 0.58 |
| >50.80 – 63.50 | +6.35 / –0.79 | 0.58 |
| >63.50 – 88.90 | +6.35 / –1.19 | 0.89 |
| >88.90 – 114.30 | +6.35 / –1.59 | 1.17 |
Dimensional tolerances for cold-worked titanium square bars
According to Table 8 of ASTM B348-06a, the permissible deviation for the side length of cold-worked titanium square bars (e.g., turned, drawn, and finished square bars) is a single-sided negative tolerance. This means the material must not be excessively thick, but a slight reduction in size is permitted. The larger the size, the greater the permissible tolerance, which aligns with the material stability characteristics of the cold drawing and finishing processes.
- For cold-worked Grade 2 titanium square bars with a side length of 25 mm, the maximum dimensional error allowed is –0.10 mm;
- The precision-drawn square bar with a side length of 50 mm has a tolerance range of +0 / –0.16 mm and is more suitable for structural parts with high assembly and fitting precision requirements.
| Specify side length range (in. / mm) | Dimensional tolerance (mm) |
|---|---|
| > ½″ to 1″ (12.70 – 25.40 mm) | +0, –0.10 mm (–0.004″) |
| > 1″ to 2″ (25.40 – 50.80 mm) | +0, –0.16 mm (–0.006″) |
| > 2″ to 3″ (50.80 – 76.20 mm) | +0, –0.20 mm (–0.008″) |
| > 3″ (>76.20 mm) | +0, –0.25 mm (–0.010″) |
UNS R50400 titanium square bar
Chalco Titanium supplies Grade 2 titanium square bars that strictly adhere to ASTM B348 standards, maintaining a high degree of purity in chemical composition control to ensure the material has excellent corrosion resistance and welding properties.
| Element | Maximum content (%) |
|---|---|
| Carbon | 0.08% |
| Nitrogen | 0.03% |
| Oxygen | 0.25% |
| Hydrogen | 0.02% |
| Iron | 0.30% |
| Other (Each) | 0.10% |
| Other (Total) | 0.40% |
| Titanium | Balance |
Mechanical properties of Gr2 titanium square rod
| Tensile Strength, min | Yield Strength (0.2% Offset) min or range | Elongation in 4D, min % | Reduction of Area, min % |
|---|---|---|---|
| 50ksi (345MPa) | 40ksi (275MPa) | 20 | 30 |
Corrosion resistance of Grade 2 titanium square bar
| Test Description | Flow rate (m/s) | Flow rate (ft/s) | Test duration | Corrosion rate (mm/y) | Corrosion rate (mils/y) |
|---|---|---|---|---|---|
| Brixham Sea, model condenser | 9.8 | 32 | 12 months | 0.003 | 0.12 |
| Kure Beach, NC, rotating disk | 8.5 | 28 | 2 months | 0.00013 | 0.005 |
| Kure Beach, NC, jet impingement | 7.2 | 23.6 | 1 month | 0.0005 | 0.02 |
| Wrightsville Beach, NC Micarta whl. | 9 | 29.5 | 2 months | 0.00018 | 0.007 |
| Lab test – no solids | 7.2 | 23.6 | 10,000 hr | nil | nil |
| Lab test – 40 g/l 60-mesh sand | 2 | 6.5 | 2,000 hr | 0.0025 | 0.1 |
| Lab test – 4% 80-mesh emery | 4.1 | 13.5 | 17.5 hr | 0.083 | 3.3 |
Grade 2 titanium has a very low corrosion rate in flowing seawater (as low as 0.00013 mm/year), with almost zero corrosion in clean environments, but the corrosion rate will increase significantly in sandy or highly erosive conditions.
To learn more about the corrosion mechanisms and performance of titanium in media such as acids, alkalis, salts, and chlorides, please refer to the article "Titanium Corrosion Resistance."
Grade 2 titanium square bar Related Products
6al-4v titanium square rod
6al-4v eli titanium square rod
Gr2 Titanium Round Bar
Value-added processing services
- Provides water jet cutting, suitable for special-shaped contours, thin-walled parts and heat-sensitive materials
- Support CNC processing, including end face milling, chamfering, drilling, etc., with high precision and good repeatability
- Can be tapped or punched according to the drawing, thread range M3-M20, support countersunk holes, through holes and other structures
- Can be peeled and fine turned to remove surface oxide layer and improve dimensional consistency and finish
- The surface can be pickled, polished or anodized to meet cleaning, decoration or anti-oxidation needs
- Provide ultrasonic non-destructive testing services in accordance with ASTM standards and issue third-party reports
Gr2 titanium square bar FAQ
What is the difference between Grade 2 and Grade 5 titanium square bars?
Grade 2 is pure titanium, offering greater corrosion resistance and improved workability. Grade 5 is a titanium alloy, offering increased strength but a higher price. Grade 2 is more suitable for applications in seawater or chemical environments.
What are the surface treatment methods?
We can provide peeling, pickling, sandblasting, fine polishing, centerless grinding and other treatments to meet different precision and appearance requirements.
Can titanium square rods be used for welding?
Grade 2 titanium has excellent weldability and is suitable for various welding methods such as TIG, MIG, and plasma welding. It is recommended to use high-purity argon protection.
How is the price of titanium square bar calculated?
The price of titanium square bars depends on the side length, length, quantity, processing requirements (such as cutting or grinding), and delivery location. If you require a detailed quote, please provide the specifications and delivery location, and we will send a detailed quote within 12 hours.
What is the minimum order quantity for titanium square bars?
We offer low minimum order quantities (MOQs) for standard stock sizes, cut to order, with a minimum order of one piece, making it ideal for prototypes or small-batch projects. For custom sizes or processing requirements, the minimum order quantity is typically 1–5 pieces, with flexible arrangements available. Contact us to purchase titanium square bars directly, with global shipping available.
How long is the lead time for custom processing?
If cutting, chamfering, punching, surface treatment and other processing are required, the delivery time is usually 5-12 working days, depending on the complexity of the process and the inventory of raw materials.
