What is the composition of stainless steel 316Ti furnace tubes?
Stainless Steel 316Ti Furnace Tubes are composed primarily of iron and specific alloying elements that enhance their performance in high-temperature environments. The main elements in stainless steel 316Ti are iron (Fe), chromium (Cr), nickel (Ni), and molybdenum (Mo). These elements work together to provide exceptional resistance to corrosion, particularly in aggressive and corrosive environments. The addition of titanium (Ti) is a distinguishing feature of stainless steel 316Ti, which helps to stabilize the alloy structure and prevent sensitization to intergranular corrosion. The precise composition of stainless steel 316Ti typically ranges from approximately 16-18% chromium, 10-14% nickel, 2-3% molybdenum, and 0.5-1.5% titanium, with the remainder being iron and trace amounts of other elements. This carefully balanced composition makes stainless steel 316Ti furnace tubes highly suitable for applications with elevated temperatures and corrosive conditions.
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What are the key properties and characteristics of stainless steel 316Ti furnace tubes?
Stainless Steel 316Ti Furnace Tubes possess several key properties and characteristics that make them highly desirable for high-temperature environments. They exhibit excellent corrosion resistance, both in acidic and alkaline conditions, due to chromium, nickel, and molybdenum in their composition. This corrosion resistance helps prolong the furnace tubes' lifespan and maintain their structural integrity over time. Stainless steel 316Ti furnace tubes offer remarkable heat resistance, allowing them to withstand prolonged exposure to elevated temperatures without significant deformation or degradation.
That makes them suitable for applications involving high-temperature gases, liquids, or solids. Additionally, stainless steel 316Ti furnace tubes possess good mechanical strength, ensuring they can withstand the stresses and pressures of furnace operations. Furthermore, these tubes exhibit excellent weldability and formability, making them easier to fabricate and install in various furnace systems. Including titanium in the alloy composition of stainless steel 316Ti provides resistance against sensitization to intergranular corrosion, making them suitable for applications where exposure to corrosive environments is a concern.
Specifications | ASTM, ASME, AISI |
Outer Diameters | 6mm – 300 mm OD |
Thickness | 1.0mm to 40mm |
Length | 5.8m, 6, Custom Lengths |
Finish | Annealed & Pickled, Bright Annealing, Polished |
Test Certificate | EN 10204 3.1 |
STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
SS 316TI | 1.4571 | S31635 | SUS 316Ti | 320S31 | 08Ch17N13M2T | Z6CNDT17‐123 | X6CrNiMoTi17-12-2 |
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Selection of Materials
The materials used to make furnace tubes are typically resistant to corrosion and high temperatures. Stainless steel, alloy steel, and nickel-based alloys are common materials.
Tube Formation
The creation of the tubes is the first step in the procedure. This can be accomplished using a variety of techniques, including cold drawing, welded tube manufacture, and seamless tube extrusion. Due to their homogeneity and lack of seams that could compromise the structure, seamless tubes are frequently used for high-temperature applications.
Heating and Annealing
The tubes are subsequently put through heat-treating procedures, such as annealing. In order to reduce internal tensions, increase ductility, and improve the material's general qualities, annealing entails heating the tubes to a certain temperature and then gradually cooling them.
Cutting and Sizing
The tubes are sized and cut to the required lengths in accordance with the application's requirements. In order to ensure a perfect fit inside the furnace or heat exchanger, precise cutting and sizing are essential.
Surface Treatment
Depending on the application, the tubes may also go through passivation or pickling as additional surface treatments. By removing oxides, scale, and other contaminants from the surface, these processes increase corrosion resistance.
Quality Control
Quality control procedures are used all through the manufacturing process to guarantee that the tubes meet the necessary requirements. This entails a variety of tests, including visual inspections, non-destructive testing techniques like ultrasonic or radiographic testing, and dimensional checks.
Final Heat Treatment (Optional)
To achieve the appropriate mechanical and metallurgical qualities, the tubes may go through a final heat treatment procedure, such as stress relieving or solution annealing, depending on the material and desired properties.
Finishing
The tubes might undergo further finishing processes such as polishing, buffing, or coating to meet specific application requirements or aesthetic preferences.
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
316TI | min. | – | – | – | – | – | 16.0 | 2.0-3.0 | 10.0 | – |
max. | 0.08 | 2.0 | 0.75 | 0.045 | 0.030 | 18.0 | 14.0 | 0.1 |
Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
Rockwell B (HR B) max | Brinell (HB) max | ||||
316TI | 515 | 205 | 35 | 75 | 205 |
Positive Material Identification – PMI Testing | Hydrostatic Test |
Chemical Analysis – Spectro Analysis | Hydrogen-Induced Cracking (HIC) Test |
Mechanical Testing Such as Tensile, Elongation, Reduction of Area | Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177 |
Micro Test | Radiography Test |
Macro Test | Dye Penetrant Test (DP Test) |
Hardness Test | Ultra Sonic Test (UT) |
Pitting Resistance Test | Eddy Current Testing |
Intergranular Corrosion (IGC) Test | Impact Test |
Flaring Test | Bend Test |
Flattening Test |
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The cities listed here are where we have supplied our grade 316Ti stainless steel Furnace Tubes in bulk or small orders. Cities from metropolitan to rural areas we can provide SS 316Ti Furnace Tubes to satisfy the needs of our clients.
Riyadh, Houston, Manama, Jaipur, Toronto, Caracas, Singapore, Algiers, Hong Kong, Mumbai, Colombo, Baroda, Secunderabad, Perth, Melbourne, Visakhapatnam, Ahmedabad, Chiyoda, Jeddah, Montreal, Thane, Rio de Janeiro, Bengaluru, Santiago, Muscat, Chandigarh, Geoje-si, Hyderabad, Rajkot, Mexico City, Dubai, Pune, Aberdeen, Coimbatore, Thiruvananthapuram, Nashik, Bhopal, Sydney, New Delhi, Kuwait City, Hanoi, Nagpur, Surat, Bogota, Milan, Doha, Calgary, Kuala Lumpur, Dammam, Ernakulam, Gimhae-si, Moscow, Howrah, Petaling Jaya, Jakarta, Kolkata, Jamshedpur, Gurgaon, Ulsan, Al Jubail, Bangkok, Lagos, Granada, Edmonton, Busan, Dallas, Faridabad, Istanbul, Noida, Lahore, Ludhiana, Madrid, Vadodara, Mumbai, Abu Dhabi, Chennai, Seoul, Los Angeles, Al Khobar, Sharjah, New York, Kanpur, Ahvaz, Courbevoie, Ho Chi Minh City, Indore, Cairo, Navi Mumbai, Karachi, London, Haryana, Atyrau, Ranchi, Brisbane, La Victoria, Vung Tau, Port-of-Spain, Pimpri-Chinchwad, Ankara, Tehran.
Certificate of Origin | Raw Material Test Reports |
Commercial Invoice | Heat Treatment Charts |
Packing List | Quality Assurance Plan (QAP) |
Fumigation Certificates | NABL approved Laboratory Test Reports |
Letter of Guarantee | Material Test Certificates |
ROHS Certificate | Certificate of Compliance/Conformity |
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