Last Updated： Aggregation Period:Sep 23, 2026～Oct 20, 2026
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It is an engineering plastic with excellent fatigue resistance♪
It has excellent fatigue resistance, as well as outstanding abrasion, wear, and chemical resistance. It is also strong against creep, has excellent dimensional stability, and has low water absorption.
Top-class heat resistance with resin. Selling PBI round bars for high-temperature and vacuum components of semiconductor devices.
PBI (Polybenzimidazole) is a super engineering plastic with top-class heat resistance, featuring a load deflection temperature of 410°C and a glass transition temperature of 420°C. It is characterized by high strength, high hardness, low thermal expansion, and excellent plasma resistance, making it suitable for high-temperature and vacuum components in semiconductor manufacturing equipment. KIRIURI.COM offers standard grade SCM7000 (black) and high-purity grade SCM7000HP (black) round rods in a total of 14 sizes ranging from φ11 to φ50. We also accommodate cutting to the required length and quantity. Property tables and material explanation PDFs are available for download.
95% light transmission and transparency comparable to glass and acrylic resin! Usable for light guides, decorations, and more.
The "GRSC Series" is a super transparent silicone rod. It is molded from the super transparent silicone "TSCE Series." It has a light transmittance of 95%, comparable to glass and acrylic resin. Available in hardness levels of 40, 50, 60, and 70, diameters of 4, 6, 8, and 15 mm, and a length of 50 cm, it can be used for light guides, lighting, decoration, and objects. [Features] ■ Rod: Super transparent with a light transmittance of 95% ■ Hardness: JIS A40 to 70 ■ Diameter: 4, 6, 8, 15 mm ■ Length: 500 mm *For more details, please refer to the PDF document or feel free to contact us.
Introduction of centerless round bars made of stainless steel SUS303.
At Yamamoto Tech Co., Ltd.'s online metal materials store "Metal Super Dot Com," we offer "Stainless Steel SUS303 Centerless Round Bars." The diameter tolerance for this product is h7, and cutting sales are not available. Please contact us for pricing. *For more details, please refer to the PDF document or feel free to contact us. Other available standards (Stainless Steel Round Bars): Stainless SUS304 Stainless SUS304L Stainless SUS303 Stainless SUS303CU Stainless SUS316 Stainless SUS316L Stainless 316Ti Stainless SUS317L Stainless SUS321 Stainless SUS329J4L Stainless SUS403 Stainless SUS420J2 Stainless SUS430 Stainless SUS630 Stainless SUS440C Stainless S31803 (S32205) Stainless S32750 (SAF2507) Stainless S32760 (Zeron100) Stainless XM-19 (Nitronic50) Please contact us for a quote.
Brass free-cutting round bars available in a wide range of sizes! We can also cut them to your specified length.
Sizes range from φ4 to φ50. We can cut to the specified total length. Please note that some items may not be cut depending on the size, so we kindly ask you to inquire. 【Example of stock sizes: Outer diameter × Total length】 ■ 3.0×2500 ■ 4.0×2500 ■ 5.0×2500 ： ■ 50.0×3000 Fujino Metal handles materials such as stainless steel, brass, copper, aluminum, and nickel silver, and offers various shapes including pipes, round bars, wires, square bars, and plates, as well as ball chains. We also accommodate sales starting from one piece, cutting, and issuing mill sheets. For more details, please visit our website or contact us.
![Case Study: Round Bar [Aluminum Bronze / Lead Bronze Casting]](https://image.mono.ipros.com/public/product/image/b32/2000701863/IPROS20002843867270416799.png?w=280&h=280)
Unique know-how! We can accommodate a wide range from prototypes to small lots and mass production.
Here are examples of the production of "round bars" using aluminum bronze/lead bronze castings as materials. 【Production Examples】 ■φ85×300L, 13kg, two types of aluminum bronze (ALBC2) ■80×300L, 15kg, LBC4 ■φ50×300L, 150L, 100L, CAC604 *For more details, please refer to the PDF document or feel free to contact us.
A sliding performance-enhanced grade of POM used in many sliding components.
The "POM NW02 Sliding Grade Round Bar" is based on POM (Polyoxymethylene) with the addition of PE (Polyethylene), which provides extremely high sliding properties. NW-02 exhibits excellent sliding performance and friction wear characteristics across a wide range of load and temperature conditions, making it suitable for sliding components in various fields. 【Features】 ■ High sliding performance and wear resistance ■ A wide variety of standard sizes available for POM sliding grades *Please feel free to contact us for more details about the material.
It has excellent chemical resistance with minimal burrs and warping during cutting, and good machinability.
This product is a cutting material with excellent chemical resistance, characterized by minimal burrs and warping during cutting, and good machinability. It has excellent chemical resistance, with some selectivity for certain chemicals, fully demonstrating the characteristics of fluororesin. It can be used in semiconductor manufacturing equipment, plating equipment, valves, and more. 【Features】 ■ Minimal burrs and warping during cutting ■ Excellent machinability and outstanding chemical resistance ■ Superior chemical resistance ■ Fully demonstrates the characteristics of fluororesin *For more details, please refer to the PDF document or feel free to contact us.
Grinding with a whetstone = centerless! It can accommodate outer diameters of about 50Φ.
We would like to introduce our "Polyacetal Copolymer Centerless Round Bars." The process of grinding with a grinding wheel is called centerless, and it can accommodate lengths of up to 1000. The outer diameters can range from 1 to 30. If you have any inquiries, please feel free to contact us. 【Product Lineup (Partial)】 ■ Outer diameter 1 × Length 1000 ■ Outer diameter 1.5 × Length 1000 ■ Outer diameter 2 × Length 1000 ■ Outer diameter 2.5 × Length 1000 ■ Outer diameter 3 × Length 1000 *For more details, please refer to the related links or feel free to contact us.
I will explain the characteristics and suitable applications of beryllium copper.
Beryllium copper is a copper alloy that contains 0.5 to 3% beryllium added to copper, and its greatest feature is that it possesses "strength comparable to steel (special steel) while being copper." 1. Excellent Features High Strength: The highest level among copper alloys (equivalent to special steel). High Electrical and Thermal Conductivity: Moderate conductivity and heat dissipation efficiency 3 to 7 times that of steel. Non-Magnetic: Does not respond to magnetic forces (ideal for precision instruments in MRI and aerospace industries). Non-Combustible: Does not produce sparks even when subjected to impact (explosion prevention). 2. Benefits of Introduction Miniaturization and Longevity: Possesses strong spring properties and strength compared to other copper alloys, allowing for smaller and more durable components. Increased Productivity: Accelerates mold cooling and shortens molding cycles. High Reliability: Stable even in harsh environments such as seawater and strong magnetic fields. 3. Typical Applications Electronic Devices: Connectors for smartphones, automobiles, and electronic devices. Precision Molds: Cooling inserts for plastic molding. Safety Tools: Explosion-proof tools (wrenches, hammers) for environments where sparks are undesirable. Large Infrastructure: Landing gear bushings for aircraft, submarine cables. The primary applications are in semiconductors, automobiles, and aircraft, where high reliability is required.
For parts in high-temperature sliding, vacuum, and plasma environments. Selling Bespel® round bars in 9 grades.
Vespel (R) is a polyimide (PI) resin from DuPont. The representative grade SP-1 can withstand continuous use temperatures of 300°C and intermittent temperatures of 480°C, offering excellent dimensional stability and electrical insulation at high temperatures. Its greatest feature is the ability to choose from different grades with varying fillers according to the application. KIRIURI.COM offers unfilled SP-1, graphite-reinforced SP-21, SP-22, SP-211, vacuum-grade SP-3, and plasma-resistant and chemical-resistant SCP-5000 series (SCP-5000/5009/5050/50094), with round rods available in 122 sizes (φ6.3 to φ152.4). We also accommodate cutting to the required length and quantity. Material property tables and material explanation PDFs are available for download.
For machining gears, bearings, and rollers. Selling cut pieces of MC nylon round bars from one piece.
MC Nylon is a cast nylon (PA6 series) polymerized using the monomer casting method. It excels in mechanical strength, wear resistance, and heat resistance compared to general nylon 6, and is widely used in machined parts such as gears, bearings, and rollers. KIRIURI.COM offers a range of round rods in 144 sizes (φ10 to φ250), starting from the basic grade MC901 (blue), as well as uncolored MC900, weather-resistant MC801, sliding MC703HL, heat-resistant up to 150°C MC602ST, conductive MC501CD (R2/R6/R9), and non-carbon anti-static MC500AS (R11). We also accommodate cutting to the required length and quantity. Material property tables and material explanation PDFs for each grade are available for download.
For high-load bearings, bushes, and fastening components. Selling unfilled PAI round bars with top-class strength.
PAI (Polyamide-imide) is a super engineering plastic that combines excellent heat resistance from imide bonds and superior processability and toughness from amide bonds. It possesses top-class mechanical strength and high creep resistance among unfilled plastics, making it suitable for high-load components in continuous use temperatures of up to 250°C. KIRIURI.COM offers Toray Plastics' TPS-Ti5013 (natural) round bars in 12 sizes ranging from φ5 to φ80. We accommodate cutting to the required length and quantity. You can also download the material property table and material explanation PDF.
You can purchase from just one piece! We can ship as soon as the same day. Please feel free to use it for test pieces and prototypes in research and development.
We offer small quantities and short delivery times for titanium/titanium alloys! If you need just L10mm... or need it immediately... please feel free to consult with us. We accept various requests for test pieces and prototypes from research and development departments of companies. 64 titanium alloy (Ti6AL-4V) has excellent properties, with tensile strength over 1.7 times and yield strength over 3.8 times that of pure titanium (TP270, TP340). We handle everything from small lots for prototypes and research to mass production for aircraft, robotics-related parts, plants, pumps, semiconductor equipment, heavy industry, etc. We also accommodate processing tailored to customer needs. We have stock available with outer diameters from Φ6 to Φ280. You can purchase in units of L10 to 1mm. ■ Made by domestic manufacturers ■ TAB6400H/ASTM Gr.5 ■ ASTM F136 (ELI material) *For more details, please refer to the PDF document or feel free to contact us.
POM material with excellent sliding properties. We have various grades in stock according to applications.
POM sliding grade round bars exhibit excellent lubricity by adding lubricants and other additives to polyacetal resin. They are suitable for printer paper sliding components, food line components, jigs, guide rails, gear components, and more. 【Features】 ■ Polyacetal resin ■ Enhanced sliding grade of POM ■ Excellent sliding properties ■ Length (mm): 1000 ■ Can be cut (please inquire separately) ■ EW-02, EB-10, LA541, LA543, LZ750, LC750, FX-11, NW-02 *Please feel free to contact us for more details about the materials.
We can accommodate small lots starting from one piece! We offer a wide range of aluminum from companies such as Nippon Light Metal, Showa Denko, and UACJ!
Kuno Sangyo Co., Ltd. is a long-established non-ferrous metal trading company founded in 1919, specializing in copper products, aluminum, and stainless steel. It is a primary authorized dealer that conducts direct transactions with numerous major non-ferrous metal manufacturers, maintaining strong connections with around 300 suppliers, ranging from large manufacturers to small specialized trading companies. We always keep stocks of materials from Nippon Light Metal, Showa Denko, and UACJ, and we handle aluminum from major domestic manufacturers, including Kobe Steel. *For more details, please request materials or view the PDF data available for download.
![[Case Study] Aluminum Centerless φ6.5～φ14×2500mm](https://image.mono.ipros.com/public/product/image/181/2000153308/IPROS2348006083297599414.JPG?w=280&h=280)
Is the aluminum material you are currently using really ◎? It is ideal for moving spindle CNC lathes, and its effectiveness is tremendous for parts requiring strict roundness and cylindricity.
Centerless grinding is a processing method used for machining cylindrical materials. It is called "centerless" because grinding is performed by passing the workpiece between two rotating grinding wheels without fixing it at the center. It is characterized by superior dimensional accuracy, surface roughness, and roundness compared to drawn materials. 【Adoption Example】 A6061B-T8: φ6.5～φ14×2500mm Outer Diameter Tolerance: +0 -0.006 Bending Tolerance: 4μm/100mm or less Surface Roughness: 3.2S or less Application: Automotive transmission parts
For seals and sliding parts around the drug solution. PTFE round rods are sold cut to the required dimensions.
PTFE (polytetrafluoroethylene / fluoropolymer) is resistant to almost all chemicals and has one of the lowest friction coefficients among resins. Its continuous use temperature is approximately 260°C, and its water absorption rate is extremely low at 0.01%. It is used in seals, gaskets, low-load sliding parts, and insulating components. KIRIURI.COM offers pure PTFE "Naflon®" (manufactured by Nichias) round rods in 32 sizes (φ4 to φ150). We accommodate cutting to the required dimensions and quantities. A material properties table and material explanation PDF are also available for download.
![[Case Study] Aluminum Centerless φ2.1～φ3.0×2500mm](https://image.mono.ipros.com/public/product/image/c9a/2000153315/IPROS7600862621617692231.JPG?w=280&h=280)
Is the aluminum material you are currently using really ◎? It is ideal for moving spindle CNC lathes, and its effectiveness is tremendous for parts with strict requirements for roundness and cylindricity.
Centerless grinding is a processing method for machining cylindrical materials. It is called "centerless" because grinding is performed by passing the material between two rotating grinding wheels without fixing the workpiece at the center. It is characterized by superior dimensional accuracy, surface roughness, and roundness compared to drawn materials. 【Application Example】 A2017B-T3: φ2.1～φ3.0×2500mm (2000mm) *After centerless processing Outer Diameter Tolerance: +0 -0.004 Roundness: 2μm Application: Two-wheeled vehicle carburetor parts
For pharmaceutical solutions and precision parts. Selling cut PPS round bars with low water absorption and excellent dimensional stability.
PPS (polyphenylene sulfide) is a crystalline super engineering plastic. It has an extremely low water absorption rate and excels in dimensional stability and chemical resistance. It offers heat resistance close to that of PEEK while being more cost-effective, making it a material chosen for its balance of cost and performance. KIRIURI.COM offers Toray Plastics' TPS-PPS (natural) round bars in 12 sizes ranging from φ10 to φ150. We accommodate cutting to the required length and quantity. A material property table and material explanation PDF are also available for download.
![[Case Study] Improved Effectiveness by Straightening the Pull Rod + Centerless Processing](https://image.mono.ipros.com/public/product/image/294/2000153318/IPROS4423326927322927707.jpg?w=280&h=280)
Is the aluminum material you are currently using really ◎? It is ideal for moving spindle CNC lathes, and its effectiveness is tremendous for parts with strict requirements for roundness and cylindricity.
Centerless grinding is a machining method used to process cylindrical materials. It is called "centerless" because grinding is performed without fixing the workpiece at the center, by passing it between two rotating grinding wheels. It is characterized by superior dimensional accuracy, surface roughness, and roundness compared to drawn materials. 【Adoption Example】 A6061B-T6: φ19×2500mm (Extruded rod) ⇒ φ18.9×2500mm (after centerless processing) Outer diameter tolerance: (±0.06) ⇒ (+0 -0.02) = By performing centerless grinding, a dramatic reduction in defect rates was observed in cutting processes. ⇒ (By performing correction processing, it becomes possible to improve surface accuracy with minimal cutting allowance.)
C3604 bronze precision round bars available in an outer diameter of 2.0mm! We can also accommodate cutting to your specified total length.
This is a free-cutting round bar made of phosphor bronze, available in outer diameters ranging from 2.0mm to 32.0mm. We can also accommodate cutting to your specified total length and the production of non-standard sizes. Please note that cutting to specified sizes may not be possible depending on the total length, so please inquire. 【Example of stock sizes: outer diameter × total length, unit: mm】 ■ 2.0×2000 ■ 2.5×2000 ■ 3.0×2500 ： ■ 32.0×2500 Fujino Metal handles materials such as stainless steel, brass, copper, aluminum, and nickel silver, and offers various shapes including pipes, round bars, wires, square bars, and plates, as well as ball chains. We also support sales from a single piece, cutting, and the issuance of mill sheets. For more details, please visit our website or contact us.
Products with an outer diameter of 6 to 300 and a length of 1000 are available! Let us introduce our product lineup.
We would like to introduce our "PEEK Round Rod" that we handle. PEEK is a crystalline resin that can be continuously used at temperatures of up to 250°C (and up to 260°C). We offer products with outer diameters ranging from 6 to 300 mm and lengths of 1000 mm. We accept orders for processed products made from this material, as well as for custom sizes (cut lengths) and quantities starting from one piece. Please feel free to consult us when you need assistance. 【Features of PEEK】 ■ Crystalline resin ■ Continuous use temperature of up to 250°C (and up to 260°C) ■ Odorless ■ Melting point of 341°C, ignition point of 575°C ■ Insoluble in water and organic solvents, but affected by concentrated sulfuric acid *For more details, please refer to the related links or feel free to contact us.
You can purchase titanium and stainless steel materials in small lots through mail order.
At Orfa Co., Ltd., we sell titanium materials, stainless steel materials, aluminum materials, and processed products, starting from small lots, including FG titanium bolts. The titanium round bar "TB340" is available in outer diameters from Φ6 to Φ280, and can be purchased in lengths of 1mm increments. 【Features】 ■ Made by domestic manufacturers ■ Lineup of outer diameters from Φ6 to Φ280 ■ Available for purchase in lengths of 1mm increments *For more details, please refer to the PDF document or feel free to contact us.
It can be used for applications such as semiconductor manufacturing equipment, plating equipment, and chemical pumps.
This product is a general-purpose cutting material with a larger diameter available domestically. We offer "PP301" with a thickness of 150mm and "PP Marubo 301" with nominal diameters of 320mm and 445mm. It can be used for applications such as semiconductor manufacturing equipment, plating equipment, and chemical pumps. 【Features】 ■ Larger diameter available domestically ■ Continuous use temperature: MAX 100℃ *For more details, please refer to the PDF document or feel free to contact us.
High strength, excellent wear resistance, and corrosion resistance! Suitable for use in vehicles, machinery, and the chemical industry.
"C6191 (formerly ABB2) round bar" is a copper alloy compliant with the RoHS directive. The standard is JIS H 3250, and it can be cut and delivered from 15mm. It is used for parts that require strength, wear resistance, and corrosion resistance among the various aluminum bronzes. 【Overview】 ■ Standard: JIS H 3250 ■ Type: Aluminum bronze extruded bar ■ Cutting: Can be cut and delivered from 15mm ■ Features: High strength, good wear resistance, and corrosion resistance *For more details, please refer to the PDF document or feel free to contact us.
You can purchase materials such as titanium and stainless steel in small lots through mail order.
Titanium alloy 64 has excellent properties, with a tensile strength more than 1.7 times and a yield strength more than 3.8 times that of pure titanium (two types). We handle everything from small lots for prototypes and research in fields such as aviation, robot parts, medical, chemical plants, and semiconductor equipment to mass production. Our company not only sells materials but also offers processing services tailored to your needs (such as milling, NC lathe, and machining). We can deliver from one piece, one sheet, or one unit. Please consider using "Orfa's Titanium." We have a range of outer diameters from Φ6 to Φ280, and lengths can be purchased in 1mm increments. 【Features】 ■ Made by domestic manufacturers ■ Lineup of outer diameters from Φ6 to Φ280 ■ Lengths available for purchase in 1mm increments *For more details, please refer to the PDF document or feel free to contact us.
NAK55 round bar (HRC 37~43)
High-performance, precision plastic mold pre-hardened steel of the free-cutting type. It has good mirror polishing properties and contains free-cutting elements, resulting in excellent machinability. Stock sizes: Φ13 to Φ503. Delivery condition: Pre-hardened. Application: Precision plastic molds. It has been heat-treated to 37-43 HRC (surface guarantee), allowing for immediate use after processing. If you have specific dimensions in mind, you can request a quote/order through the related link here.
