Gr2 Titanium Rod Description
Introduction
Gr2 titanium rod is a rod profile of single α-type industrial-grade commercially pure titanium and one of the purest titanium grades. We make them by vacuum melting, forging/rolling, annealing and pickling. We use the standard ASTM B348.
Rod form: Round rods, square rods, hexagonal rods, and other shapes produced through processes such as hot rolling, forging, and cold drawing are the most basic forms of titanium materials.
Produce process & equipment: We use high-purity titanium sponge as the raw material. We melt it at least twice in a vacuum furnace to make ingots and forge these ingots into billets then turn the billets into rods by hot rolling or forging. After that, we heat the rods to relieve stress. Next, we clean them with acid, turn or grind their surfaces, straighten them, cut them precisely, and check them for defects without damaging them. Only after all these steps do we send the rods out. These titanium rods have even internal structure, are easy to bend without breaking, resist corrosion well, and have very accurate sizes.
Technical Specifications
General Specification
| Items | Specifications |
| Diameter range(φ, mm) |
Regular stock in market: φ8-φ200 mm(most commonly used) Small-size cold drawn polished: φ4-φ30 mm(for precision machining) Large-size forged rod: φ100-φ300 mm (mainly customized) |
| Section shape |
Round rod: most mainstream Square/hexagonal rod: 6×6 to 80×80 mm (customized), S6-S80 Inch sizes: 1/4″(6.35), 1/2″(12.7), 1″(25.4), 2″(50.8), 3″(76.2) |
| Length(mm) |
Annealed condition(M): 300-4000 mm (mainly random length) Hot cold worked condition(R/Y): 300-6000 mm Fixed multiple lengths: within the above ranges, tolerance +15 mm, with 5 mm cutting allowance per cut |
Chemical Specification
| Elements | Ti(balance) | O | Fe | C | N | H | Total other impurities |
| Max. content(%) | ≥99.2 | ≤0.25 | ≤0.30 | ≤0.10 | ≤0.05 | ≤0.015 | ≤0.40 |
Physical Properties
| Mechanical properties | Standard | Physical properties | Value | Service properties | Performance characteristics |
| Tensile strength | ≥345 MPa | Density | 4.51 g/cm³ | Weldability | Excellent |
| Yield strength | ≥275 MPa | Melting point | ~1668 ℃ | Cold formability/bendability | Excellent |
| Elongation | ≥18% | – | – | Corrosion resistance | Good |
| – | – | – | – | Biocompatibility | Good |
Processing & Property Specification
| Code | Name | Common name | Features and performance |
| M | Annealed state | Annealed condition, soft condition | Stress-relieved, excellent ductility, stable corrosion resistance, easy to machine and weld |
| R | Hot working state | Hot-rolled, forged, and black-skin rods | Not annealed; has scale; relatively high strength; average ductility |
| Y | Cold working state | Cold-drawn, hardened | Cold-worked, high-strength, low ductility, high dimensional accuracy, high internal stress |
Standard Specification
| Standard system | Grade | Standard |
| China(GB) | TA1 | GB/T 2965 |
| USA(ASTM) | Grade 1 | ASTM B348 |
| Russia(ГОСТ) | BT1-00 | ГОСТ 19807 |
| Japan(JIS) | TP270C | JIS H4600 |
| Europe(EN) | Ti1 | DIN 17862 |
| Germany(DIN) | 3.7025 | DIN 17862:2024 |
Performance Comparison Between Gr1 and Gr2
| Comparison Items | Gr.1 | Gr.2 | Differences |
| USA ASTM | Grade 1 | Grade 2 | Global reference use |
| UNS Code | R50250 | R50400 | Customs clearance/procurement general |
| Purity(Ti) | ≥99.5% | ≥99.2% | Gr1 higher purity |
| Impurities(wt%) | Fe≤0.20, O≤0.18, N≤0.03 | Fe≤0.30, O≤0.25, N≤0.05 | Gr2 higher impurities, more strength |
| Tensile strength | ≥240 MPa | ≥345 MPa | Gr2 has more 41% higher strength than Gr1 |
| Yield strength | ≥138 MPa | ≥275 MPa | Gr2 has a higher yield strength |
| Elongation | ≥20% | ≥18% | Gr1 has better ductility and is easier to form |
| Corrosion resistance | Excellent(more suitable for extreme corrosion) | Good(suitable for most operating conditions) | Less different |
|
Cold working/ formability |
Excellent(ideal for deep drawing and complex bending) | Good(suitable for regular shape) | Gr1 has better formability |
| Weldability | Excellent | Excellent | Both are suitable for welding |
| Application | Applications requiring high purity and high formability: medical implants, precision instruments, deep-drawn parts, bellows, thin-walled containers, and environments with extreme corrosion | Mainly for chemical industry use, chemical equipment, heat exchangers, pipelines, ships, seawater desalination, fasteners, shafts, and structural components. |
Gr1 high purity/precision Gr2 high strength/general purpose |
| Price | Higher | Competitive | Gr2 has wider market penetration and lower costs. |
Features & Advantages
- Balanced strength and durability: Titanium element content ≥99.0%, controlled by oxygen elements, tensile strength ≥345MPa, more than 20% higher than Gr1, suitable for light and medium load scenarios, not easily deformed when bearing working load, and has good toughness and is not easy to break.
- Excellent corrosion resistance: A stable oxide film can be formed on the surface, which can resist the corrosion of multiple media such as seawater, dilute acid and alkali solutions, and organic acids in food. The corrosion rate of seawater immersion is extremely low, and the corrosion resistance life is longer than that of stainless steel. It can still maintain excellent corrosion resistance after welding.
- Excellent processability: It has excellent cold forming, welding and cutting performance. It can be processed into precision parts and special-shaped parts through cold rolling, stamping, bending and other processes. High-quality welds can be achieved by conventional welding processes. You don't need to heat-treat it after welding, so it's easy to make a lot of parts.
- Lightweight and non-magnetic: It is very light, only 4.51 g/cm³, about half the weight of stainless steel, so equipment is easier to carry and move. It is almost non-magnetic (1.0008), so it can be used where magnetic fields matter.
- Excellent biocompatibility: It is safe and non-toxic, doesn't cause body rejection, works well with bones and tissues, won't release metal ions, and can be used for medical implants and food equipment while meeting hygiene standards.
- High cost-effectiveness and stable supply chain: Large production scale, cost is only 10-15% higher than Gr1, but with better strength; as a globally used grade, it has sufficient production capacity, can quickly respond to procurement needs of various specifications, and has low total life cycle cost.
Performance Solution
Problem: Stainless steel and carbon steel have poor corrosion resistance in bad environments (such as seawater, acid and alkali solutions, and salt media), resulting in short service life and the need for frequent replacement.
Solution: Gr2 titanium rods have excellent corrosion resistance. A dense and self-healing oxide film forms on the surface, which can resist corrosion from seawater, dilute acids, alkalis and salt media, preventing premature component failure and reducing replacement frequency. Its corrosion resistance life can be 3-5 times that of stainless steel.
Problem: Stainless steel (density around 7.9 g/cm³) and carbon steel (density around 7.85 g/cm³) have relatively high densities, resulting in excessively heavy equipment, increasing transportation costs and making installation difficult.
Solution: Gr2 titanium rod only has 4.51 g/cm³ density, around 57% for stainless steel and carbon steel, after use Gr2 titanium rod, resulting in excessively heavy equipment, increasing transportation costs and making installation difficult.
Problem: Carbon steel is prone to rust and corrosion in humid environments, requiring frequent painting and galvanizing to extend its lifespan, thus increasing maintenance costs.
Solution: Gr2 titanium rods possess excellent atmospheric corrosion resistance, will not rust in humid environments, and require no additional anti-corrosion maintenance during use, effectively reducing long-term maintenance costs.
Problem: Stainless steel and carbon steel have poor biocompatibility, which may lead to metal ion migration, making them unsuitable for applications with high hygiene standards, such as food contact and medical implants.
Solution: Gr2 titanium rods are non-toxic, do not cause rejection reactions, have good biocompatibility, and pose no risk of metal ion migration. They are suitable for high-end hygiene scenarios such as food contact equipment and medical implants, and comply with relevant industry standards.
Problem: Stainless steel and carbon steel exhibit unstable performance in extreme temperature environments (brittle fracture at low temperatures, easy oxidation at high temperatures), making them unsuitable for special working conditions.
Solution: Gr2 titanium rods possess excellent wide temperature range adaptability, maintaining toughness even at -253℃, and can withstand short-term high temperatures of 400℃. At 300℃, the strength retention rate is over 80%, making them suitable for special working conditions such as cryogenic liquid hydrogen storage and high-temperature chemical processing.
Application
- Chemical corrosion protection (most mainstream) heat exchangers, reactors, stirring shafts, impellers, tower equipment accessories; pipes, flanges, bolts, fasteners, pump bodies, valves; chlor-alkali, soda ash, pharmaceuticals, electroplating, electrolytic cells, wastewater treatment equipment.
- Marine engineering, shipbuilding seawater desalination equipment, seawater pipelines, valves, flanges ship components, corrosion-resistant structural components for offshore platforms components resistant to seawater, salt spray, and chloride ion corrosion.
- Medical devices (Medical Grade Gr2) orthopedic implants: bone plates, bone screws, screws surgical instruments, dental implants, medical equipment structural components features: non-toxic, biocompatible, non-magnetic, corrosion resistant.
- Vacuum equipment, electroplating, metallurgy vacuum furnace accessories, cathodes, anodes, hangers titanium hangers, titanium clamps, titanium electrodes for electroplating titanium components for electrolytic metallurgy and hydrometallurgy.
- Light industry, food, and pharmaceutical industries food machinery, beverage, beer, and pharmaceutical equipment; shafts, rods, and fasteners requiring non-toxicity, cleanliness, and corrosion resistance.
- Environmental protection and new energy desulfurization and denitrification equipment, acid washing equipment new energy batteries, electrolytic hydrogen production, energy storage related titanium components.
- Machinery, molds, general components titanium machined parts: shafts, pins, bolts, screws, ejector pins, fixtures, plugs, flanges structural components requiring lightweight, non-magnetic, rust-proof, and durable properties.
- Other special scenarios non-magnetic equipment (medical MRI, precision instruments); cryogenic equipment; non-load-bearing structural components in aerospace; lightweight non-load-bearing components in automotive modifications.
Custom Processing Capabilities
1) Production Line Strength
Baoji Titanium Valley Ti-Ni-Zr Material Processing Co., Ltd. has invested a total of $36.2 million in high-end strip and foil production, establishing an advanced production line for titanium, nickel, zirconium and their alloy strips and foils in the world.
The production line specializes in the stable rolling of ultra-thin, wide-width strips, overcoming critical industry challenges such as springback, difficult shape control and inconsistent material properties. We achieved stable mass production of high-end titanium foil.
With an annual capacity of 3,000 tons, the production line is expected to realize an annual output value of $116 million, supporting large-volume supply demands from high-end customers in aerospace, electronics, new energy, chemical engineering and other industries..
2) The production line is equipped with advanced equipment in the world which can ensure high precision and stability for every coil of strip and foil:
A.750mm 20-high precision rolling mill: enable precision rolling of ultra-thin, wide-width strips
B.Continuous cleaning and annealing line: ensure surface cleanliness and uniform microstructure
C.Vacuum furnace: improve stability of material properties
D.Leveler: enhance strip shape and flatness
E.Slitting line: high-precision slitting suitable for ultra-thin materials
F.Sanding line: optimize surface consistency and texture.
Through precision equipment and optimized processes, the production line has successfully broken through seven core technical barriers for strip and foil products, including surface color difference control, thickness tolerance control, uniform annealing structure, high-precision slitting, and high-performance cleaning processes.
3) We provide one-stop custom processing from raw materials to finished products, ensuring stable supply of high-precision, high-performance products to our customers.
A.Materials: Pure titanium, titanium alloys, zirconium, nickel
Specifications: Thickness 0.02–1.0mm, width 350–670mm, customize according to requirement.
B.Surface treatment: Cleaning, sanding, degreasing, annealing; available in bright, matte and other function surface.
C.Dimensional & flatness control: Precise control of thickness, tolerances and surface flatness
D.Slitting & cutting to length: Suitable for ultra-thin wide strips with high yield and stable quality
E.Mass delivery: Annual capacity of 3,000 tons to meet large-volume, high-standard custom orders