{"product_id":"seamless-cp-grade-2-titanium-capillary-tubing","title":"CP Grade 2 Titanium Capillary Tubing: Micro-Bore Tube","description":"\u003cstyle\u003e\n.rkg2{--teal:#005969;--blue:#00aaff;--ink:#1f2a2d;--muted:#5b6b70;--bg:#f4fafb;--line:#d7e8eb;--white:#fff;max-width:1080px;margin:0 auto;padding:0 16px;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,\"Helvetica Neue\",Arial,sans-serif;font-size:16px;line-height:1.7;box-sizing:border-box}\n.rkg2 *{box-sizing:border-box}\n.rkg2 h2{font-size:clamp(22px,3.2vw,30px);line-height:1.3;color:var(--teal);margin:28px 0 14px;padding-bottom:10px;border-bottom:3px solid var(--blue)}\n.rkg2 h3{font-size:clamp(18px,2.4vw,22px);color:var(--teal);margin:26px 0 10px;padding-left:12px;border-left:4px solid var(--blue)}\n.rkg2 h4{font-size:clamp(16px,1.8vw,18px);color:var(--ink);margin:18px 0 6px}\n.rkg2 h5{font-size:15px;color:var(--teal);margin:14px 0 4px;text-transform:uppercase;letter-spacing:.4px}\n.rkg2 h6{font-size:14px;color:var(--muted);margin:10px 0 4px;font-weight:700}\n.rkg2 p{margin:8px 0}\n.rkg2 ul{margin:8px 0;padding-left:22px}\n.rkg2 li{margin:4px 0}\n.rkg2 a{color:var(--teal);text-decoration:underline;text-decoration-color:var(--blue);text-underline-offset:3px}\n.rkg2-lead{font-size:clamp(15px,1.6vw,17px);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:14px 16px;margin:14px 0}\n.rkg2-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;margin:12px 0}\n.rkg2-card{background:var(--white);border:1px solid var(--line);border-top:3px solid var(--blue);border-radius:10px;padding:12px 14px}\n.rkg2-card h4{margin-top:2px;color:var(--teal)}\n.rkg2-card p{margin:4px 0 0;font-size:14.5px;color:var(--muted)}\n.rkg2-tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:10px 0 16px;border:1px solid var(--line);border-radius:10px}\n.rkg2 table{border-collapse:collapse;width:100%;min-width:480px;background:#fff;font-size:14.5px}\n.rkg2 th{background:var(--teal);color:#fff;text-align:left;padding:9px 12px;white-space:nowrap}\n.rkg2 td{padding:9px 12px;border-top:1px solid var(--line);vertical-align:top}\n.rkg2 tr:nth-child(even) td{background:var(--bg)}\n.rkg2 details{border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:8px;padding:0 14px;margin:10px 0;background:#fff}\n.rkg2 summary{cursor:pointer;padding:12px 0;font-weight:700;color:var(--teal);font-size:16px;list-style:none}\n.rkg2 summary::-webkit-details-marker{display:none}\n.rkg2 summary::after{content:\"+\";float:right;color:var(--blue);font-weight:700;font-size:18px}\n.rkg2 details[open] summary::after{content:\"\\2013\"}\n.rkg2 details h4{display:inline;margin:0}\n.rkg2 details p{margin:0 0 12px}\n.rkg2-note{font-size:14px;color:var(--muted);background:var(--bg);border-radius:8px;padding:10px 12px}\n@media (max-width:600px){.rkg2{padding:0 10px;font-size:15px}.rkg2-grid{grid-template-columns:1fr}.rkg2-card p{font-size:14px}}\n\u003c\/style\u003e\n\u003cdiv class=\"rkg2\"\u003e\n\u003ch2\u003eGrade 2 Titanium Capillary Tubing: Micro-Bore Tube\u003c\/h2\u003e\n\u003cp class=\"rkg2-lead\"\u003eMicro-bore \u003cstrong\u003eGrade 2 titanium capillary tubing\u003c\/strong\u003e for the finest fluid paths. Supplied from 0.5 to 3.0 mm outside diameter in thin walls, seamless and available straight precision-cut or continuous coiled, with clean smooth bores for medical devices, analytical instruments, micro-sensors and precision dispensing.\u003c\/p\u003e\n\u003ch3\u003eWhat Is Grade 2 Titanium Capillary Tubing?\u003c\/h3\u003e\n\u003cp\u003eGrade 2 titanium capillary tubing is ultra-small-diameter tubing drawn from commercially pure titanium. It combines a fine, controllable bore with the corrosion resistance, non-magnetic character and biocompatibility of Grade 2 titanium, while remaining ductile enough for precise tip forming, micro-bending and coiling. Where ordinary fine metal tubes clog, kink or corrode, titanium capillary keeps a clean, repeatable micro-fluid path in medical, analytical and instrument-grade assemblies.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cdiv class=\"rkg2-grid\"\u003e\n\u003cdiv class=\"rkg2-card\"\u003e\n\u003ch4\u003eMicro-Bore Control\u003c\/h4\u003e\n\u003cp\u003eFine outside diameters and internal bores for repeatable micro-fluid and gas paths.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rkg2-card\"\u003e\n\u003ch4\u003eSmooth, Clean Bore\u003c\/h4\u003e\n\u003cp\u003eSmooth inner wall supports consistent flow, easy flushing and cleanroom-grade assembly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rkg2-card\"\u003e\n\u003ch4\u003eBiocompatible and Non-Magnetic\u003c\/h4\u003e\n\u003cp\u003eSuited to medical-device, laboratory and sensor environments where magnetic materials are excluded.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rkg2-card\"\u003e\n\u003ch4\u003eDuctile for Fine Forming\u003c\/h4\u003e\n\u003cp\u003eTakes tip forming, necking, flaring, micro-bending and coiling at small scale without cracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rkg2-card\"\u003e\n\u003ch4\u003eCorrosion Resistance\u003c\/h4\u003e\n\u003cp\u003eWithstands reagents, saline, body-contact environments and atmospheric corrosion.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rkg2-card\"\u003e\n\u003ch4\u003eStraight or Coiled\u003c\/h4\u003e\n\u003cp\u003ePrecision-straightened cut lengths or continuous coil for long, joint-free runs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eManufacturing and Quality Control\u003c\/h3\u003e\n\u003ch4\u003eSeamless Cold-Drawn Capillary\u003c\/h4\u003e\n\u003cp\u003eCapillary is produced seamless by repeated cold drawing through precision dies, giving a uniform wall, a smooth bore and the structural integrity needed at sub-3 mm scale.\u003c\/p\u003e\n\u003ch4\u003eStraightened and Coiled Supply\u003c\/h4\u003e\n\u003cp\u003eFine tube is supplied either precision-straightened and cut to fixed lengths, or wound as continuous coil on reels to eliminate joints in long instrument runs.\u003c\/p\u003e\n\u003ch4\u003eCondition, Cleanliness and Inspection\u003c\/h4\u003e\n\u003ch5\u003eAnnealed or Stress-Relieved Temper\u003c\/h5\u003e\n\u003cp\u003eLengths are annealed or stress-relieved to suit subsequent straightening, tip forming and assembly.\u003c\/p\u003e\n\u003ch5\u003eCleanliness and Surface\u003c\/h5\u003e\n\u003cp\u003ePickled, polished or bright finishes are available, with ultrasonic cleaning and clean packaging for medical and analytical orders.\u003c\/p\u003e\n\u003ch5\u003eInspection and Traceability\u003c\/h5\u003e\n\u003ch6\u003eDimensional and Bore Inspection\u003c\/h6\u003e\n\u003cp\u003eOutside diameter, wall and bore condition are checked batch by batch against the ordered specification.\u003c\/p\u003e\n\u003ch6\u003eSurface and Cleanliness Checks\u003c\/h6\u003e\n\u003cp\u003eInner and outer surfaces are inspected for cleanliness, inclusions and mechanical damage before packing.\u003c\/p\u003e\n\u003ch6\u003eBatch Documentation\u003c\/h6\u003e\n\u003cp\u003eHeat and lot traceability and an EN 10204 3.1 mill test certificate are available for every batch.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ch4\u003eDimensional Range\u003c\/h4\u003e\n\u003cdiv class=\"rkg2-tablewrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eGrade 2 commercially pure titanium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplicable standard\u003c\/th\u003e\n\u003ctd\u003eASTM B337 \/ ASME SB-337\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003e0.5–3.0 mm; finer sizes to order\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWall thickness\u003c\/th\u003e\n\u003ctd\u003e0.1–0.5 mm typical; gauges to drawing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003ctd\u003eSeamless cold-drawn; straight or coiled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCondition\u003c\/th\u003e\n\u003ctd\u003eAnnealed \/ stress-relieved\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003ePrecision-cut straight lengths or continuous coil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface\u003c\/th\u003e\n\u003ctd\u003ePickled \/ polished \/ bright; cleaned for cleanroom use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEnds\u003c\/th\u003e\n\u003ctd\u003eBurr-free cut; tip-formed, necked or closed on request\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCertification\u003c\/th\u003e\n\u003ctd\u003eEN 10204 3.1 mill test certificate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"rkg2-note\"\u003eFor larger 3–25 mm precision lines, see our \u003ca href=\"\/products\/grade-2-titanium-tube-3-25mm-small-diameter-precision-tubing\"\u003esmall-diameter Grade 2 titanium tube\u003c\/a\u003e. Browse \u003ca href=\"\/collections\/grade-2-titanium-tubing\"\u003eall Grade 2 titanium tubing\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch4\u003eMechanical and Physical Properties\u003c\/h4\u003e\n\u003cdiv class=\"rkg2-tablewrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTensile strength\u003c\/th\u003e\n\u003ctd\u003e≥ 345 MPa (50 ksi)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eYield strength, 0.2% offset\u003c\/th\u003e\n\u003ctd\u003e≥ 275 MPa (40 ksi)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eElongation\u003c\/th\u003e\n\u003ctd\u003e≥ 20%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHardness\u003c\/th\u003e\n\u003ctd\u003e80 HRB max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDensity\u003c\/th\u003e\n\u003ctd\u003e4.51 g\/cm³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMelting point\u003c\/th\u003e\n\u003ctd\u003eapprox. 1665 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModulus of elasticity\u003c\/th\u003e\n\u003ctd\u003eapprox. 105 GPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThermal conductivity\u003c\/th\u003e\n\u003ctd\u003eapprox. 16.4 W\/(m·K)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThermal expansion coefficient\u003c\/th\u003e\n\u003ctd\u003eapprox. 8.6 µm\/(m·°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eAvailable Forms\u003c\/h3\u003e\n\u003ch4\u003eStraight Precision-Cut Lengths\u003c\/h4\u003e\n\u003cp\u003eFine straight lengths cut burr-free for automated assembly and instrument building.\u003c\/p\u003e\n\u003ch4\u003eCoiled Capillary on Reels\u003c\/h4\u003e\n\u003cp\u003eContinuous coil wound on reels to remove joints from long instrument and fluid runs.\u003c\/p\u003e\n\u003ch4\u003eTip-Formed Micro-Parts\u003c\/h4\u003e\n\u003cp\u003eNecked, flared, closed, bent or shaped micro-components produced to drawing.\u003c\/p\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003ch4\u003eMedical and Surgical Devices\u003c\/h4\u003e\n\u003cp\u003eNon-implant medical and surgical devices, minimally invasive instruments, guide and delivery sheaths, endoscopic components and fluid-delivery micro-lines, supported by material documentation on request.\u003c\/p\u003e\n\u003ch4\u003eAnalytical and Laboratory Instruments\u003c\/h4\u003e\n\u003cp\u003eHPLC and chromatography lines, spectrometry and analytical instrumentation, sample-delivery paths and laboratory automation requiring a clean, inert micro-bore.\u003c\/p\u003e\n\u003ch4\u003eMicro-Sensors, Probes and Measurement\u003c\/h4\u003e\n\u003cp\u003eMicro-sensor sheaths, fine probe bodies, temperature and pressure measurement tubes and thermowell-style elements protected by a thin titanium wall.\u003c\/p\u003e\n\u003ch4\u003eMicro-Fluidic and Precision Dispensing\u003c\/h4\u003e\n\u003cp\u003eMicro-fluidic circuits, precision dispensing nozzles, atomizer jets and fine spray or dosing channels that demand a repeatable internal bore.\u003c\/p\u003e\n\u003ch4\u003eAerospace and Electronics Micro-Assemblies\u003c\/h4\u003e\n\u003cp\u003eFine instrument lines, micro-actuation paths and electronics cooling micro-channels where non-magnetic, lightweight materials are required.\u003c\/p\u003e\n\u003ch3\u003eValue-Added Fabrication\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBurr-free precision cut-to-length\u003c\/li\u003e\n\u003cli\u003eTip forming, necking, flaring and end closing\u003c\/li\u003e\n\u003cli\u003eMicro-bending, shaping and coiling\u003c\/li\u003e\n\u003cli\u003eUltrasonic cleaning and clean packaging\u003c\/li\u003e\n\u003cli\u003ePolished and bright finishes\u003c\/li\u003e\n\u003cli\u003eReel, tray or custom carrier packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Choose RapidKeen Grade 2 Titanium Capillary Tubing\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDedicated sub-3 mm micro-bore range\u003c\/li\u003e\n\u003cli\u003eSeamless cold-drawn, straight or coiled\u003c\/li\u003e\n\u003cli\u003eClean smooth bores for medical and analytical use\u003c\/li\u003e\n\u003cli\u003eHeat and lot traceability with mill documentation\u003c\/li\u003e\n\u003cli\u003ePrototype pieces through production volumes\u003c\/li\u003e\n\u003cli\u003eExport-ready clean protective packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\n\u003ch4\u003eWhat is Grade 2 titanium capillary tubing used for?\u003c\/h4\u003e\n\u003c\/summary\u003e\n\u003cp\u003eIt is used wherever a very small, clean and corrosion-resistant fluid or gas path is required: medical and surgical devices, HPLC and analytical instruments, micro-sensors and probes, micro-fluidic dispensing and fine instrument lines.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\n\u003ch4\u003eIs capillary supplied straight or coiled?\u003c\/h4\u003e\n\u003c\/summary\u003e\n\u003cp\u003eBoth. It can be precision-straightened and cut to fixed lengths for automated assembly, or wound as continuous coil on reels for long, joint-free runs.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\n\u003ch4\u003eCan capillary tube be tip-formed or bent?\u003c\/h4\u003e\n\u003c\/summary\u003e\n\u003cp\u003eYes. Supplied annealed or stress-relieved, it takes tip forming, necking, flaring, end closing and tight micro-bends, and can be supplied as finished micro-parts to drawing.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails open=\"\"\u003e\n\u003csummary\u003e\u003cbr\u003e\u003c\/summary\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is Grade 2 titanium capillary tubing used for?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It is used wherever a very small, clean and corrosion-resistant fluid or gas path is required: medical and surgical devices, HPLC and analytical instruments, micro-sensors and probes, micro-fluidic dispensing and fine instrument lines.\"}},{\"@type\":\"Question\",\"name\":\"Is capillary supplied straight or coiled?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Both. It can be precision-straightened and cut to fixed lengths for automated assembly, or wound as continuous coil on reels for long, joint-free runs.\"}},{\"@type\":\"Question\",\"name\":\"Can capillary tube be tip-formed or bent?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Supplied annealed or stress-relieved, it takes tip forming, necking, flaring, end closing and tight micro-bends, and can be supplied as finished micro-parts to drawing.\"}},{\"@type\":\"Question\",\"name\":\"What sizes and documentation are available?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The standard micro-bore range covers 0.5-3.0 mm outside diameter with thin walls to specification; finer sizes and custom gauges are produced to order, each batch traceable with an EN 10204 3.1 mill test certificate.\"}}]}\n\u003c\/script\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"2mm (5\/64\") \/ 0.5mm (0.02\") \/ 500mm (19.7\")","offer_id":44067341336635,"sku":null,"price":27.2,"currency_code":"USD","in_stock":true},{"title":"3mm (1\/8\") \/ 0.5mm (0.02\") \/ 500mm (19.7\")","offer_id":44067341369403,"sku":null,"price":17.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/TitaniumHeatingCore_bdea7dc5-a36a-4a70-9f98-98883ecedcf3.webp?v=1787931530","url":"https:\/\/rapidkeen.com\/products\/seamless-cp-grade-2-titanium-capillary-tubing","provider":"RapidKeen","version":"1.0","type":"link"}