SA249 Tubes- Manufacturer and Supplier
Midland Alloys Inc. is a trusted Indian manufacturer and global supplier of SA249 Tubes for critical industrial applications. The SA 249 material consists of welded austenitic stainless steel tubing. It is known for its superior corrosion resistance, high-temperature strength, and reliable mechanical properties. These tubes are perfect to use in heat exchangers, boilers and superheaters. ASTM A269 tubing includes both seamless and welded austenitic stainless steel tubes, intended for general use in high-pressure and high-temperature conditions. The chemical structure of SA 249 TP 304 consists of 0.08% carbon, 1.0% silicon, 2% manganese, 18–20% chromium, 8–11% nickel, 0.03% sulfur, 0.045% phosphorus, and the balance Iron. On the other hand, the mechanical structure has a tensile stress of 515 MPa, a yield stress of 205 MPa, and an elongation of 35%.
Benefits of SA249 Tubes
SA249 tubes are an effective option in industries where heat resistance and durability are crucial as it provide consistent performance even in harsh working environments. In a single product, it offers the perfect balance of corrosion resistance, mechanical strength and cost. These tubes, which are designed for high-temperature and high-pressure applications, retain their structural integrity and effective heat transfer during extended service periods. While adherence to ASTM and ASME standards ensures constant quality and safety in significant processes, their smooth inside surface, minimizes fouling.
Key benefits include:
- Outstanding resistance to corrosion in harsh industrial conditions
- Reliable high temperature operation in heat exchangers, and boilers
- Long service life with minimum maintenance requirements
- Good formability for manufacturing, bending, and flaring
- Excellent weldability for strong and waterproof tubes
- High mechanical strength to maintain pressure
- Cost savings compared to other high performance alloys
SA249 Tubes Specification
1/2" (15 NB) to 48" (1200NB)
ASTM A249
ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Threaded / Screwed / Forged / Plate
150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Forging, Rolling, Casting
FNPT, NPT, BSPT, MNPT, BSPP
Contact us today to discuss how SA249 Tubes can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.
Technical Details & Delivery Condition
| SA 249 | C | Mn | P | S | Si | Ni | Cr | Mo | N |
|---|---|---|---|---|---|---|---|---|---|
| 316L | 0.035 | 2.00 | 0.045 | 0.030 | 1.0 | 10-14 | 16-18 | 2-3 | |
| 1.4404 | 0.03 | 2.00 | 0.040 | 0.015 | 1.0 | 10-13 | 16.5-18.5 | 2-2.5 | 0.11 |
Tensile Stress (Mpa) | Yield Stress (Mpa) | Elongation (%) | Elongation (%) | |
|---|---|---|---|---|
| SA 249 316L | 485 | 170 | 35 | 25 |
| 1.4404 | 490-690 | 190 | 40 | 30 |
| Standard | Grade |
|---|---|
| JIS | SUS316L |
| WNR / DIN | 1.4404 |
| UNS | S31603 |
| AISI | 316L |
| EN | 02Cr17Ni12Mo2 |
| China GB | 022Cr17Ni12Mo2 |
The Difference Between SA249 Tubes vs SB111 Tubes
SA249 tubes are austenitic stainless steel tubes that are welded and manufactured in compliance with ASME SA249 specifications. These tubes are suitable for high temperature, high pressure applications such as boilers, superheaters, and heat exchangers. SB111 tubes on the other hand are seamless copper, and copper-alloy tubes made in compliance, with ASTM B111 requirements. It is commonly utilized in marine industries, heat exchangers and condensers, where excellent thermal conductivity is essential. While SA249 Tubes provide high strength, and oxidation resistance at high temperatures, SB111 Tubes provide optimal heat transfer performance at the cost of reduced corrosion resistance in oxidising condition. The two are used based on whether the service requires high-temperature survivability or highest thermal efficiency.
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Applications of ASME SA 249 TP 304 Welded Stainless Steel Tube
ASME SA249 is a standard for welded austenitic stainless steel tubing that finds extensive applications in high-pressure and high-temperature conditions like boilers, superheaters, and heat exchangers. SA249 TP 304 tubes find key applications in power plants, petrochemical refineries, chemical processing units, and marine heat recovery systems owing to superior corrosion resistance and mechanical properties. In the food and beverage industry, these tubes enable hygienic heating and cooling processes due to their easy-to-clean surfaces and resistance to contamination. SA249 tubes are used in pharmaceutical facilities to supply heat and transfer sterile fluids, ensuring the quality of their products. It is also perfect for condensers, chemical plants and industrial heating equipment in various industries due to their strong performance under cyclic heating and cooling.
Why Choose Midland Alloys Inc.?
Midland Alloys Inc. is a prominent Indian producer and exporter of high-quality stainless steel ASME SA 249 TP 304 Welded Stainless Steel Tube of high quality, with precise manufacturing methods that adhere to ASTM/EN specifications, and operating under ISO-approved systems. We provide cut-to-size lengths, assorted end finishes, special schedules, and custom surface treatments on request, delivering internationally to customers in the Gulf, Europe, Africa and Southeast Asia. Our in-house testing, which it is supported with mill certifications and third-party inspections, includes dimensional checks, chemical analysis, hydrostatic testing, and non-destructive examinations. This ensures timely delivery, project-specific packaging and skilled handling of both small and large export orders. Tubes that meet ASTM/ASME standards (ASME SA 249 TP 304 Welded Stainless Steel Tube) are marked and supplied with Mill Test Certificates (MTC) attesting to their mechanical and chemical conformity.
FAQs
SA249 tubes have wall thicknesses ranging from 0.5 mm to 8 mm, and outer diameters ranging from 6 mm to 101.6 mm. Depending on the needs of the client, and the particular application, these dimensions can be modified.
Yes, due to its hygienic qualities, resistance to corrosion, and adherence to industry standards for hygienic applications, SA249 tubes designed with TP 304 stainless steel are frequently utilized in the food, beverage and pharmaceutical industries.
As SA249 stainless steel tubes are susceptible to corrosion caused by chloride, their resistance to corrosion in seawater is limited. As a result extra safety measures like coatings, or cathodic protection are used they are mostly inappropriate for extended exposure to seawater.
