Mitchell Stainless is a reliable manufacturer and supplier of top-notch Stainless Steel 348H Tubing based in Hamilton, New Zealand. We cater to the rigorous demands of various industrial and engineering sectors. With our state-of-the-art manufacturing facilities and stringent quality control measures, we ensure that our tubing meets international standards for strength, corrosion resistance, and high-temperature performance. Our Stainless Steel 348H tubing is crafted with precision, guaranteeing dimensional accuracy, consistent wall thickness, and a superb surface finish. Serving industries throughout New Zealand, Mitchell Stainless is dedicated to providing dependable, expert solutions tailored to critical applications.
Stainless Steel 348H is an austenitic, niobium-stabilized stainless steel that features a higher carbon content, enhancing its strength at elevated temperatures. Its typical composition includes chromium, nickel, and carefully controlled amounts of niobium to prevent intergranular corrosion. This alloy boasts excellent creep resistance, impressive tensile and yield strength, and outstanding oxidation resistance when exposed to high temperatures. Stainless Steel 348H tubing retains its toughness and structural integrity under thermal stress, making it perfect for long-term use in high-heat and high-pressure environments.
| Sizes: | 1/8″ to 24″ |
| ASTM A312 Steel grades: | TP304/304L/304H |
| ASTM A312 Schedules: | STD, XS, XXS, SCH5S, SCH10/10S, SCH20, SCH30, SCH40/40S, SCH60, SCH80/80S, SCH100, SCH120, SCH140, SCH160 |
| Standards: | ASTM A312, ASME SA312 |
| Lengths: | SRL and DRL 5meters up to 11meters available from Stock or Production. |
| Ends: | Plain/Bevelled |
| AISI 348H Chemical Properties | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| C | Mn | P | S | Si | Cr | Ni | Cb | Co | Ta |
| 0.08 Max | 2.00 Max | 0.045 Max | 0.030 Max | 1.00 Max | 17.0-20.0 | 9.0-13.0 | 1.10 Max | 0.20 Max | 0.10 Max |
| Yeild strength | Tensile strength | Elongation | Reduction |
| Min 0.2% Mpa | Min Mpa | Min % | Min % |
| 205 | 515 | 30 | 50 |
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We maintains the maximum quality levels by conducting a serious testing and testing certification process to ensure Stainless Steel 348H Tubing quality. Each of the products, before they reach the customers’ doorstep, will undergo proper tests including dimensional verification, chemical analysis, and some mechanical testing procedures. The respective company issues an MTR ensuring the material conformity to international norms and specifications.
This tubing is seamless, available in various sizes with precise dimensions. It offers excellent corrosion resistance suitable for high-temperature applications.
Welded for structural integrity, available in a range of sizes. Known for its robust construction and corrosion resistance, ideal for industrial applications.
Designed specifically for heat transfer applications, available in customized sizes. Offers superior resistance to corrosion and thermal stress.
Precision tubing with controlled dimensions for instrumentation and control systems. Provides high corrosion resistance and reliability in sensitive environments.
Engineered for high-pressure boiler systems, available in standard and custom sizes. Resistant to corrosion and oxidation, ensuring long-term performance.
U-shaped tubes used in heat exchangers and condensers, available in diverse dimensions. Offers excellent resistance to corrosion and stress cracking.
Specifically designed for condenser applications, available in various diameters. Provides superior corrosion resistance and heat transfer efficiency.
Tubes with extended surface area for enhanced heat transfer efficiency, available in multiple configurations. Offers exceptional resistance to corrosion and oxidation.
The Stainless Steel 348H tubing from Mitchell Stainless is extensively utilized in applications that demand both strength and corrosion resistance at high temperatures. You’ll find it in heat exchangers, superheater and reheater tubes, petrochemical processing equipment, refinery piping systems, and power generation plants. Thanks to its resistance to scaling and intergranular corrosion, this alloy is ideal for continuous high-temperature service. Moreover, Stainless Steel 348H tubing is also employed in chemical processing, fertilizer production, and various other industries where durability and reliability are crucial.
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