6Al-4V Titanium Flat Bar
6Al-4V titanium alloy flat bar (also known as Grade 5 titanium flat bar) is an α-β titanium alloy that combines high strength with lightweight properties. It is widely used in aerospace, medical devices, marine engineering, and high-end industrial applications. Composed of approximately 90% titanium, 6% aluminum, and 4% vanadium, this alloy offers an excellent strength-to-weight ratio, corrosion resistance, and good weldability.
Chalco Titanium offers a comprehensive inventory of 6Al-4V titanium alloy flat bar, available in cut-to-length, precise tolerances, and a variety of surface finishes. All materials comply with international standards such as ASTM B265 and AMS 4911, ensuring full traceability. Whether for structural component manufacturing or precision machining, we provide stable and reliable material solutions.
Ti 6Al 4V titanium flat bar specification
Chalco Titanium provides 6Al 4V (Grade 5) Titanium alloy flat bars strictly comply with the following international standards:
- AMS 4928 — Titanium alloy bars, wires, forgings, and rings (annealed), widely used in aerospace structural parts
- AMS 4965 / AMS 4967 — Standard for Titanium Bar in the Aged (STA) Condition for High-Strength Applications
- ASTM B348 — General industrial grade titanium bars and billets, suitable for machining and structural components
- ASTM F1472 — Annealed Titanium Rod for Medical Devices, Suitable for Orthopedic Implants and Medical-Grade Parts
- ISO 5832-3 — International standard for titanium alloy rods for surgical implants, meeting global medical device certification requirements
6Al-4V titanium alloy flat bar stock and tolerances
Available sizes
Chalco Titanium offers a wide selection of 6Al-4V (Grade 5) titanium alloy flat bar in stock, with thicknesses ranging from 3 mm to 50 mm and widths from 20 mm to 150 mm. Standard lengths include 1000 mm, 2000 mm, and custom cut lengths. All flat bar is precision forged or rolled, with surface oxide removed and held to tight dimensional tolerances. Click here to view our stock list.
Standard tolerance
In precision manufacturing and demanding structural applications, dimensional stability directly impacts part performance and assembly quality. Chalco Titanium's Grade 5 (6Al-4V) titanium alloy flat bar adheres to the strict dimensional tolerances specified by ASTM B348, ensuring consistent geometric accuracy and reliability across thickness and width across each batch.
We offer different tolerance grades for hot rolled and cold finished flat bars to meet customers' diverse needs for strength, workability and dimensional accuracy. Click to view the complete tolerance list.
Popular Gr5 titanium flat bar types
Rolled 6al-4v flat bar
Titanium sheets are rolled into coils or blocks by hot or cold rolling to the required thickness and then cut into strips .
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Chalco Titanium offers a variety of hot-rolled 6Al-4V titanium alloy flat bars. Typical thicknesses range from 6.35mm to 50mm, widths from 25mm to 150mm, and lengths from 1000mm to 3000mm. Custom sizes and machining allowances are also supported. Materials are supplied in accordance with standards such as ASTM B348 and AMS 4928, and come with a manufacturer's warranty and test report.
Compared to cold-worked materials, rolled flat bar exhibits superior plasticity and machinability, facilitating subsequent machining or hot forming. Its uniform microstructure and adequate thermal stress release make it suitable for welding, stamping, and complex forming processes. With a typical tensile strength of 900–980 MPa and stable overall mechanical properties, it is a preferred material for structural components in the aviation, chemical, and marine industries.
Forged 6Al-4V flat bar
Forged flat bars are made from titanium ingots through multiple hot working processes into billets of similar size, which are then roughed or finished to obtain the required specifications.
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Forged flat bar is produced by forging a titanium ingot through multiple hot working steps into a billet of similar dimensions. This billet is then roughed or finished to the desired specifications.
Chalco Titanium offers high-strength, forged 6Al-4V titanium flat bar in thicknesses ranging from 10mm to 80mm, widths typically from 30mm to 200mm, and lengths up to 2000mm to 3500mm.
We offer custom designs to ensure structural strength and processing requirements are met. Materials can be supplied in accordance with aerospace and industrial standards such as AMS 4928 and AMS 4965/4967, and come with original material reports, ultrasonic testing records, and heat treatment records.
Forged flat bar features fine-grained, high-density steel, resulting in superior mechanical properties to rolled material. Typical tensile strengths reach 950–1000 MPa, making it suitable for critical structures such as load-bearing beams, supports, and connectors. Its exceptional toughness and fatigue resistance make it widely used in demanding applications such as aerospace structures, pressure vessels, and military equipment.
Extruded Gr5 titanium flat bar
Extruded flat bars are made by extruding 6Al-4V alloy in a hot state and are suitable for large-scale, fixed-section titanium production.
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Chalco Titanium offers hot-extruded titanium alloy flat bars in a variety of cross-sectional dimensions, with thicknesses typically ranging from 5mm to 25mm, widths up to 100mm, and standard lengths from 3000mm to 6000mm. Custom lengths and cross-sections can also be customized to meet customer mold requirements. Materials comply with ASTM B348 or can be manufactured to customer drawings, making them suitable for OEM projects requiring minimal post-forming processing.
Extruded flat bars offer excellent cross-sectional consistency and continuity, making them suitable for processing into standard parts or profile components. Their tensile strength typically ranges from 880–960 MPa, and they offer excellent weldability and corrosion resistance. They are commonly used in applications such as automated structures, marine hulls, and lightweight components for transportation equipment.
Cold worked 6Al-4V titanium alloy flat bar
Cold-processed flat bars are formed by drawing, rolling or straightening hot-rolled/forged titanium materials at room temperature to improve dimensional accuracy and surface quality.
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Chalco Titanium offers a wide range of cold-worked 6Al-4V flat bars in various thicknesses, ranging from 2.0mm to 25mm, with widths typically ranging from 20mm to 100mm. Custom lengths are also available. These bars can be manufactured to AMS 4928 (annealed after cold forming) or in accordance with specific customer specifications. They are ideal for precision parts processing and applications requiring high aesthetics and tolerance control.
Compared to hot-worked materials, cold-worked titanium flat bar offers more precise dimensions and a smoother surface, with tolerances as close as ±0.1mm, making it suitable for subsequent CNC machining, deep drawing, precision welding, and other processes. Its tensile strength typically ranges from 920–980 MPa, and it exhibits excellent dimensional stability and fatigue resistance, making it suitable for high-value-added industries such as medical devices, precision structural parts, and electronic assembly components.
Our Grade 5 titanium flat bars are just one option—this alloy is also available as round bars and square bars to suit different design needs. We additionally offer flat bars in other titanium alloys, providing flexible solutions for a wide range of projects. Contact us to discuss your requirements and receive a customized recommendation.
6Al-4V titanium chemical composition
| Element | Content range or maximum value (%) |
|---|---|
| Carbon | ≤ 0.10 |
| Aluminum | 5.50 – 6.75 |
| Nitrogen | ≤ 0.05 |
| Oxygen | ≤ 0.020 |
| Other, Total | ≤ 0.40 |
| Titanium | Balance |
| Vanadium | 3.50 – 4.50 |
| Iron | ≤ 0.40 |
| Hydrogen | ≤ 0.015 |
Remark:
- Maximum content of " Other" item: 0.10%.
- AMS 4928 (applicable to bars, billets, and forgings): Hydrogen ≤ 0.0125%, Iron ≤ 0.30%.
Typical mechanical properties
The following are the mechanical properties of Grade 5 (Ti-6Al-4V) titanium alloy in accordance with ASTM B348:
| Performance indicators | Tensile Strength | Yield Strength (0.2% Offset) | Elongation (4D, min) | Area reduction rate (min) |
|---|---|---|---|---|
| Imperial units (ksi) | 130 | 120 | 10% | 25% |
| Metric unit (MPa) | 895 | 828 | 10% | 25% |
Corrosion resistance of 6Al-4V titanium
Ti 6Al 4V is exposed to oxygen in air or water, it immediately and spontaneously forms a stable, continuous and firmly adherent oxide film. This gives it excellent corrosion resistance in a wide range of media.
Ti 6Al 4V is highly resistant to corrosion in a variety of aqueous solutions, including seawater. It is particularly resistant to oxidizing acids, chlorine-containing media (including water), rocket propellants, and alkaline environments. Extensive corrosion of Ti 6Al 4V is only likely to occur in environments with strong reducing acids or dry chlorine.
Ti 6Al 4V is also susceptible to stress corrosion cracking (SCC) and crevice corrosion in environments containing chloride ions or halogens. Therefore, it is recommended to avoid the use of chlorinated solvents, chlorine-containing cutting fluids and other chemicals during titanium processing.
Titanium and its alloys (including Ti 6Al 4V) are also susceptible to hydrogen embrittlement. Gaseous or electrochemical hydrogen can diffuse into the metal, forming brittle hydrides. Therefore, hydrogen absorption must be controlled during processing, particularly during heat treatment and pickling. Titanium alloy products are typically specified with a maximum permissible hydrogen content of 150 ppm.
Corrosion resistance level in different media environments
| Corrosive media | Corrosion resistance grade |
|---|---|
| Sulfuric Acid | Moderate |
| Sodium Hydroxide | Moderate |
| Sea Water | Excellent |
| Acetic Acid | Excellent |
| Salt spray (NaCl Salt Spray) | Excellent |
| Humidity | Excellent |
Corrosion rate in different corrosive media
| Corrosive media | concentration | Temperature (°C) | Corrosion rate (mm/yr) |
|---|---|---|---|
| Sea Water | — | normal temperature | nil (≈0) |
| Hydrochloric acid | 2% | 37.8 | 0.03 |
| Hydrochloric acid | 10% | 100 | 0.508–1.02 |
| Hydrochloric acid + 5% CrO₃ | - | 100 | 1.02 |
| Hydrochloric acid vapors | - | 37.8 | 3.38 |
| Nitric Acid | 65% | boiling | 0.254–0.635 |
| Sulfuric Acid | 25% | 100 | 0.396–0.549 |
| Sodium hydroxide (NaOH) | 25% | 65.6 | 0.046–0.051 |
Notes:
- Avoid exposure to high concentrations of chloride, dry chlorine gas, and strong reducing acid environments
- During processing, hydrogen absorption must be prevented to prevent hydrogen embrittlement. It is recommended to control the hydrogen content to ≤ 150 ppm
Value-added services
Processing services
Chalco Titanium provides one-stop services from rough machining to precision machining, ensuring that Grade 5 titanium flat bars have higher assembly and use efficiency before delivery.
- Sawing /cutting to length, support cut to length, processing tolerance can be controlled within ±0.5 mm
- Water jet cutting is suitable for special-shaped workpieces and high-precision parts that are sensitive to heat effects
- CNC machining ( CNC), capable of face milling, chamfering, hole processing, special-shaped contour processing, etc.
- Punching and tapping, the processing range supports M3-M20 internal and external threads, through holes, countersunk holes and other structures
Surface treatment
According to customer applications, we can perform a variety of functional and aesthetic surface treatments on titanium flat bars to meet different working conditions:
- Pickling: Removes oxide scale, improves weldability and cleanliness
- Mechanical polishing (Polished): Bright appearance, suitable for decorative parts or applications with high cleaning requirements
- Anodized: Enhances corrosion resistance, can be colored, and improves surface hardness and recognition
- Sandblasting (customized): used to reduce reflection and uniform surface roughness
Quality inspection
All Grade 5 titanium flat bars can be fully tested according to customer requirements before leaving the factory to ensure dimensional accuracy, internal density and surface quality.
- Chemical composition analysis, in accordance with ASTM B348 requirements, controlling key elements such as hydrogen, oxygen, and nitrogen
- Mechanical properties testing, including tensile strength, yield strength, elongation and other indicators
- Ultrasonic flaw detection (UT) to detect internal cracks or inclusions, suitable for aviation and high-demand fields
- Dye penetrant testing (PT) can detect surface cracks, creases and other defects that are invisible to the naked eye
Packaging and transportation
Chalco Titanium supports global customer delivery, providing reliable and safe export packaging and transportation guarantees:
- Special export wooden box packaging, with moisture-proof, rust-proof and impact-proof functions
- Laser marking, label numbering, and QR code recognition can be performed on demand
- EN 10204 3.1), dimensional inspection report, packing list and commercial invoice are provided with the goods
- Sample orders can be shipped by express delivery such as DHL/FedEx, and bulk orders can be shipped by sea, air or LCL.
FAQ
What is the price of Grade 5 titanium alloy flat bar?
The price of titanium flat bar is determined by a combination of factors, including alloy state (annealing, heat treatment), size specifications (thickness, width, length), processing technology (sawing, water jet, CNC), surface treatment, as well as order quantity and current titanium ingot raw material price.
Chalco Titanium is committed to providing competitive pricing and customizing solutions to meet project requirements. We can quickly provide quotes for standard sizes in stock, and for custom sizes, we will provide a final price within 24 hours, including tax and shipping.
What is the minimum order quantity?
standard-sized Grade 5 titanium flat bars is 1–2 pieces. Custom-sized minimum order quantities are determined by cross-sectional dimensions, processing technology, and inventory availability. Please contact us to confirm inventory and production lead times .
Can you provide free samples?
We offer free sample requests, with ample inventory of standard-sized samples and fast delivery. Depending on the project type and stage of collaboration, samples may be shipped free of charge, with shipping costs borne by the customer.
What is the typical delivery cycle? What shipping methods are supported?
In-stock products typically ship within three business days, while custom parts require a lead time of 7–15 business days. We support international couriers such as DHL and FedEx, and can arrange air and sea freight for bulk orders. All packaging meets export shipping requirements.
6Al-4v titanium flat bar stock size details
| product | thickness | width | length |
|---|---|---|---|
| 3.18mm (t) 6Al-4V flat bar | 3.18mm (1/8") | 25.4mm (1") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 3.18mm (1/8") | 50.8mm (2") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 3.18mm (1/8") | 76.2mm (3") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 6.35mm (1/4") | 25.4mm (1") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 6.35mm (1/4") | 50.8mm (2") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 6.35mm (1/4") | 76.2mm (3") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 6.35mm (1/4") | 100mm | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 10.0mm | 25.4mm (1") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 10.0mm | 50.8mm (2") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 10.0mm | 76.2mm (3") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 10.0mm | 100mm | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 12.7mm (1/2") | 25.4mm (1") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 12.7mm (1/2") | 50.8mm (2") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 12.7mm (1/2") | 76.2mm (3") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 12.7mm (1/2") | 100mm | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 16.0mm | 50.8mm (2") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 16.0mm | 76.2mm (3") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 16.0mm | 100mm | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 19.05mm (3/4") | 25.4mm (1") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 19.05mm (3/4") | 50.8mm (2") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 19.05mm (3/4") | 76.2mm (3") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 20.0mm | 100mm | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 25.4mm (1") | 25.4mm (1") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 25.4mm (1") | 50.8mm (2") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 25.4mm (1") | 76.2mm (3") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 25.4mm (1") | 127.0mm (5") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 30.0mm | 76.2mm (3") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 30.0mm | 101.6mm (4") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 30.0mm | 120mm | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 38.1mm (1.5") | 76.2mm (3") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 38.1mm (1.5") | 101.6mm (4") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 50.0mm (2") | 101.6mm (4") | 1000–3000mm or customized |
| 3.18mm (t) 6Al-4V flat bar | 50.0mm (2") | 127.0mm (5") | 1000–3000mm or customized |
Can't find the right size? Contact Charco Titanium to customize it to your exact needs.
Tolerance details
In demanding industrial environments, dimensional consistency and material stability are crucial. Chalco Titanium's Grade 5 titanium flat bar strictly adheres to ASTM B348 standards, ensuring that each product meets international specifications for composition, mechanical properties, and dimensional tolerances.
The following is a list of tolerances for Grade 5 hot rolled flat bars :
| Width range (in.) | Width range (mm) | Thickness ≤ ½ in. (≤ 12.70 mm) | Thickness > ½ ~ 1 in. | Thickness > 1 ~ 2 in. | Width tolerance (in.) | Width tolerance (mm) |
|---|---|---|---|---|---|---|
| ≤ 1 | ≤ 25.40 | ±0.008 (0.20) | ±0.010 (0.25) | —— | ±1/64 → ±1/64 | ±0.40 → ±0.40 |
| >1 – 2 | 25.40 – 50.80 | ±0.012 (0.30) | ±0.015 (0.38) | ±1/32 (0.79) | +1/32, -1/32 | +0.79, -0.79 |
| >2 – 4 | 50.80 – 101.60 | ±0.015 (0.38) | ±0.020 (0.51) | ±1/32 (0.79) | +1/8, -1/32 | +1.59, -0.79 |
| >4 – 6 | 101.60 – 152.40 | ±0.015 (0.38) | ±0.020 (0.51) | ±1/32 (0.79) | +3/32, -1/16 | +2.38, -1.59 |
| >6 – 8 | 152.40 – 203.20 | ±0.016 (0.41) | ±0.025 (0.64) | ±1/32 (0.79) | +1/8, -5/32 | +3.18, -3.97 |
| >8 – 10 | 203.20 – 254.00 | ±0.021 (0.53) | ±0.031 (0.79) | ±1/32 (0.79) | +5/32, -3/16 | +3.97, -4.76 |
Dimensional tolerances for cold-worked flat bars
| Size range (in.) | Size range (mm) | Width tolerance ≤6.35 mm | Width tolerance>6.35 mm | Thickness tolerance (in.) | Thickness tolerance (mm) |
|---|---|---|---|---|---|
| > 3⁄8 to 1 | 9.54 – 25.40 | ±0.004 (0.10) | ±0.002 (0.05) | ±0.002 | 0.05 |
| > 1 to 2 | 25.40 – 50.80 | ±0.006 (0.15) | ±0.003 (0.08) | ±0.003 | 0.08 |
| > 2 to 3 | 50.80 – 76.20 | ±0.008 (0.20) | ±0.004 (0.10) | ±0.004 | 0.1 |
| > 3 to 4½ | 76.20 – 114.30 | ±0.010 (0.25) | ±0.005 (0.13) | ±0.005 | 0.13 |
Recommended use:
If your Grade 5 titanium flat bar is formed by cold drawing/cold rolling (such as precision applications, medical or instrument parts with high dimensional accuracy requirements), you can refer to this table as a dimensional control standard;
If the material is heat treated, pickled after heat treatment, or has special hardness/performance requirements, the tolerance is usually twice the value in the table.
