‌439 ferritic stainless steel pipe is a high-performance stainless steel material that reduces the carbon content and adds stabilizing elements such as titanium on the basis of ordinary ferritic material (430). The following is a detailed description of 439 ferritic stainless steel pipe:
Chemical composition and characteristics: The chemical composition of 439 stainless steel mainly includes carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), chromium (Cr), nickel (Ni) (extremely low content or no content), titanium (Ti) and other elements. Among them, the chromium content is between 17.0%-19.0%, which provides it with good corrosion resistance. By reducing the carbon content and adding stabilizing elements such as titanium, the intergranular corrosion resistance, formability and weldability of 439 stainless steel have been significantly improved. ‌Corrosion resistance: 439 stainless steel has good corrosion resistance in oxidizing environments and is suitable for general corrosive media such as water, steam, gas, etc. Although its corrosion resistance is slightly lower than that of 304 austenitic stainless steel, it is still better than 200 series stainless steel materials. In addition, 439 stainless steel has similar or better resistance to pitting and crevice corrosion in chloride environments than 304 stainless steel, and its resistance to chloride ion stress corrosion cracking is also very high.
Heat resistance: 439 stainless steel has good heat resistance and can resist oxidation up to 920°C in intermittent service and up to 870°C in continuous service. However, it should be noted that if heated for a long time in the 400-500°C range, it may become brittle at room temperature, and this effect can be corrected by subsequent annealing.
Processing and welding properties: 439 stainless steel has good processing properties and is easy to bend, stretch and form. In terms of welding, due to its very low carbon and nitrogen content and stabilized by the addition of titanium and/or niobium, it has very good resistance to sensitization and therefore intergranular corrosion.
Application areas: Due to its good corrosion resistance, high formability and weldability, as well as its relatively low price, 439 ferritic stainless steel pipe is widely used in many fields. Including but not limited to elevators, automobile exhaust systems, washing machine drums, etc. where corrosion resistance and certain strength are required.

Q1.Can I have a sample order for stainless steel products?
A:Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.

Q2.What about the lead time?
A:Sample takes 3-5 days, production time takes 7-15days for order quantity more than 28tons.

Q3.Do you have any MOQ limit for stainless steel products order?
A:Low MOQ, 1pc for sample checking

Q4.How do you ship and how long does it take to arrive?
A:For samples, we usually ship by DHL, UPS, FedEx or TNT, It usually takes 3-5 days to arrive. Airline and sea shipping are also optional. For mass products, ship freight is preferred.

Q5.Is it OK to print my logo on the product?
A:Yes.OEM and ODM can be provided for us.

Q6:Do you provide guarantee for the product?
A:Yes, we provide 5-10 years warranty for our products.

Q7:How to deal with the failure?
A: First of all, our products are produced under a strict quality control system, and the defective rate will be reduced by 0.2%.