825 Alloy And 316 SS

What Is The Difference Between 825 Alloy And 316 SS?

Incoloy 825 is a nickel-iron-chromium alloy with added molybdenum, copper and titanium, which has excellent corrosion resistance in a variety of corrosive environments. 316 stainless steel is an austenitic stainless steel containing chromium, nickel and molybdenum, known for its good corrosion resistance, especially in chloride-containing environments.

Is 825 alloy magnetic?

Currently, our customers mainly use it in valve components, thermowells and sensors, fasteners, and some downhole tools that utilize its non-magnetic properties.

Is 825 alloy stainless steel?

825 alloy is a nickel-based alloy, which means that the most abundant element in it is nickel, which accounts for 38-46% of the total content. It also contains iron, chromium and molybdenum, but in lower proportions. Stainless steel is a type of steel that is corrosion-resistant.

Will 316 stainless steel rust?

Will 316 stainless steel rust? The answer is yes, it will rust, but it is more corrosion resistant than other grades of stainless steel, such as 304 and 302. This corrosion resistance comes from its composition, which includes a higher percentage of chromium, nickel, and molybdenum.

Incoloy 825 vs SS 316 – What's the Difference

Corrosion Resistance

Incoloy 825 is a nickel-iron-chromium alloy with added molybdenum, copper, and titanium. It is resistant to a wide range of corrosive media such as sulfuric acid, phosphoric acid, and seawater. In addition, it resists stress corrosion cracking and pitting. On the other hand, SS316 is a stainless steel alloy that contains molybdenum, which enhances its corrosion resistance. It is particularly suitable for applications involving acetic, sulfuric, and hydrochloric acids. However, it is susceptible to pitting in chloride environments.

Temperature Limits

Both Incoloy 825 and SS316 perform well at high temperatures. Incoloy 825 has a high temperature limit of 870°C (1600°F), while SS316 can withstand temperatures up to 815°C (1500°F). However, Incoloy 825 is better suited for very high temperature applications above 540°C (1000°F).

Weldability

In terms of weldability, SS316 is superior to Incoloy 825. SS316 can be easily welded using most conventional welding techniques, such as gas tungsten arc welding (GTAW), stick metal arc welding (SMAW), and gas metal arc welding (GMAW). However, welding of Incoloy 825 requires more care and preparation, and can be prone to cracking and other defects if not done properly.

Gnee Steel is a supplier of 825 Alloy And 316 SS, including tubes, pipes, plates, strips, plates, round bars, flat bars, forged billets, hexagons, wire and extrusions. We work with steel mills to provide customers with 625 alloy, and its products meet or exceed many leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN and BS standards.
Gnee Steel stocks and sells 825 Alloy And 316 SS tubes, plates, strips, plates, round bars, flat bars, forged billets, hexagons, wire and extrusions. You are welcome to contact us for a quote at any time at ss@gneesteel.com