Titanium rod: from brand selection to machining process (2026 revision)

titanium barTitanium Rod / Bar has five core characteristics: high strength, low density 4.51g/cm³, excellent corrosion resistance, good biocompatibility and weldability. It is widely used in aviation fasteners, medical implants, chemical corrosion resistant shafts, precision machine parts and 3D printing raw materials.

titanium barIt belongs to the intermediate base metal of titanium deep processing, and the specifications are betweenTitanium PlateBetween titanium wire and titanium wire, it is the basic raw material of 60% titanium deep-machined parts.Aviation fasteners, medical bone nails are made oftitanium barMade by turning, 3D printing atomized powder is alsotitanium barAs a blank,titanium barMarket demand directly follows the fluctuation of prosperity degree of downstream deep processing industry.

Titanium rod industry has grown rapidly in the past five years, main drivers, Domestic replacement of aviation fasteners for speed-up, 250,000 Titanium Fasteners for C919 single aircraft, Single titanium rod consumption up to 2.5 tonsAging population drives orthopedic implant market to maintain 12% growth rate, Demand for TC4 ELI medical titanium rods increases significantlyTC4 titanium alloy rod as atomized powder raw material, demand rose 60% in 2024;Hydrometallurgical stirring shaft, seawater pump shaft and other chemical equipment upgrading;Aerospace structural parts, medical equipment, marine equipment and other precision machine parts demand continues to expand.

Compared with stainless steel rods and nickel rods, titanium rods have obvious performance differences.Titanium rod density is only 4.51g/cm³, much lower than stainless steel rod 7.93g/cm³, nickel rod 8.90g/cm³;The tensile strength can reach 895-1100MPa, which is higher than the other two materials.The service life of titanium rod can reach more than 15 years in seawater condition, Excellent corrosion resistance in wet chlorine environment, Biocompatibility highlights, Suitable for medical implant scenarios.Titanium rod work hardening speed is fast, More difficult to machine, Market unit price range 180-1500 yuan/kg, Floating with the grade.

Classified by material grade, Pure titanium ≥99.5%) mostly used in chemical electrodes, Medical suturePure titanium ≥99.3%) is the most commonly used grade, Adapted chemical corrosion resistant parts, sea water equipmentTA3, TA4 pure titanium grades for high-strength fasteners and medical bone nails, aviation structural parts;TA9 Ti-Pd alloy is suitable for strong reducing acid and hydrometallurgical conditions.TA10 titanium-molybdenum-nickel alloy suitable for high temperature wet chlorine, seawater heat transfer conditions;TC4 (Grade5, Ti-6Al-4V) for aerospace fasteners, 3D printing, medical parts;TC4ELI low clearance titanium alloy rod is special for high-end medical implants;TC11 titanium alloy for aeroengine blades and fasteners;TA18 (Grade9, Ti-3Al-2.5V) is mostly used in aviation pipeline and high-end sports equipment.

According to specifications: φ6-25mm thin rod, length 1-6m, used for fasteners, medical bone nails, machine parts;φ25-100mm medium rod, length 1-4m, used for aviation structural parts, chemical shafts, machining blanks;φ100-200mm thick rod, length 1-3m, used for forging parts and large machined parts;φ200-350mm stick, length 0.5-2m, used for large forgings, 3D printing atomization powder raw materials;φ50-300mm forged rod, length 1-6m, used for aviation components, high strength fasteners.

According to the surface state division: black bar for forging blank, used as forging blank;The burnishing rod is commonly used for general machining;Polishing rod roughness Ra≤0.8μm, used for precision machining, medical products;Acid pickling passivation AP rod for chemical corrosion resistance equipment;Polishing rod Ra≤0.2μm, suitable for medical implants and decorative parts.

Titanium rod processing and stainless steel rod biggest difference, Titanium absorbs hydrogen and oxygen above 400℃, Fast work hardening speed, serious tool wear, Argon protection is required throughout the process, And use titanium machining special tools. Complete process flow: titanium ingot blank, forging at 950-1050℃, forging ratio ≥4:1;vacuum or argon protection annealing is finished;Roughing to remove scale and straighten;Ultrasonic nondestructive testing;finish turning to near finished product size;External grinding Control surface roughness as required;pickling passivation treatment;carry out multi-dimensional detection on components, mechanic, size, surface and flaw detection;Final identification, PE film protection + wooden case packaging.

Forging heating needs to strictly control the holding time to prevent coarse grains;Forging ratio not up to standard will cause internal porosity, subsequent processing cracking;Roughing cutting speed to control, select coated carbide tools;Grinding uses silicon carbide special grinding wheel to avoid surface burn;Acid pickling passivation control ratio and time to ensure titanium self-passivation protective film. Iron contamination is the main risk of titanium rod use, Pitting occurs preferentially when iron filings are embedded on titanium surface, Failure of the component in a short time.Titanium processing must be produced in a special area, tools, fixtures, gloves and carbon steel can not be mixed.

Domestic basic implementation of GB/T 2965 "Titanium and Titanium Alloy Bars";GB/T 13810 shall be implemented for titanium rod for medical implantation;Matching brand standard GB/T 3620.1;There are also special standards such as YS/T 1032, YY/T 0966, JB/T 10735, etc.ASTM B348 is commonly used internationally, ASTM F136 is used for medical implants, AMS series standards are used for aviation products, and ASME SB-348 is used for pressure vessel titanium rods.The selection sequence gives priority to the design documents, then matches the working conditions, and superimposes the basic national standards and industry-specific standards.

Titanium rod applications cover a number of industries: aviation fasteners selected TC4, TA18, TC11;TA4, TC4, TC4 ELI are used for medical implant bone nails and intramedullary needles;TC4 and TC11 are selected as 3D printing atomized powder blanks;TA2 and TA10 are selected for chemical mixing shaft and pump valve rod;The pump shaft and valves of seawater equipment shall be selected as TA2, TA10 and TC4:Precision machine plus structural parts, electrolytic electrode, high-end bicycle frame, all kinds of forging base metal have corresponding brand optional. Typical case: TC4 material aviation high strength bolt, φ12mm, meet AMS4965 standard, forging ratio 6:1, 100% ultrasonic inspection;TC4ELI nail, φ10mm, ASTM F136, ISO13485, surface roughness Ra≤0.4μm;Seawater desalination TA10 pump shaft, replace 316L, solve pitting fracture problem, long-term stable operation.

Titanium rod selection six-step method: the first step to confirm the use of scenarios;second, selecting an adaptive brand;3. determining diameter and length;fourth, selecting the surface state;fifth, agreeing mechanical performance indexes;Step 6: Determine the inspection level and third-party inspection requirements. The purchase contract shall specify the brand number, size tolerance, surface states, mechanical indexes, chemical component, executive standard, Flaw detection items, certification requirements, furnace lot number identification, warranty period, And require manufacturers to provide material certification, Full set of information such as flaw detection records.

Procurement needs to focus on avoiding six major quality hazards: brand mixing, pure titanium pretending to be titanium alloy;The forging ratio is insufficient, and there are loose defects in the interior;Annealing is not sufficient, surface oxidation, machining easy to break knife;Diameter size out of tolerance;Iron ion pollution in the production process;Key components are not 100% ultrasonic tested, and internal defects are not detected.

Domestic titanium rod manufacturing process is mature, Head enterprises can stably supply φ6-350mm full-specification titanium rod products, Cost performance is better than imports.Only high-end medical TC4ELI, aviation, high-end 3D printing raw materials imported products exist premium.

Titanium rod material selection logic: implant medical scene priority TC4/TC4ELI;TC4/TC11 is selected for aviation high intensity working condition;TA2/TA10 is selected for long-term corrosion resistance of seawater wet chlorine;TC4 was selected as raw material for atomization;TA1/TA2 is selected for common industrial machining.

Titanium rod industry three major development directions: medical titanium rod demand continues to grow, aging to promote the proportion of medical titanium rod continues to increase;Demand for TC4 titanium rod for 3D printing atomization powder is growing rapidly, Aviation restoration, Personalized medical dual track pullDomestic substitution in aviation field continues to be promoted, and mass production of C919 and C929 drives localization of high-end titanium rods.

Relying on Baoji China Titanium Valley Industrial Foundation, Shaanxi Qianyi Tuoda Technology can supply TA 1, TC4ELI and other full series titanium rod, Support Black Skin, smooth sth. on a lathe, polish, Polishing a variety of surface customization, Supporting material certificate, mechanical testing, ultrasonic inspection report, adaptive aviation, medical implant, chemical equipment, marine equipment, 3D printing and other projects.

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