A stainless steel with high nickel and high molybdenum content, containing copper and nitrogen, and a typical microstructure of the base metal composed of 100% austenite is called a super austenitic stainless steel. Due to its high nickel and molybdenum content, as well as the presence of copper and nitrogen, super austenitic stainless steel is relatively difficult to melt; Super austenitic stainless steel is prone to segregation, cracking, and other issues, making it the most demanding and difficult variety in stainless steel production processes.

Like other commonly used Cr Ni austenitic steels, super austenitic stainless steel has excellent cold and hot workability.

(1) The maximum heating temperature during hot forging can reach 1180 degrees Celsius, and the minimum stopping forging temperature is not less than 900 degrees Celsius;

(2) Hot forming can be carried out at 1000-1150 degrees Celsius;

(3) The heat treatment process is 1100-1150 degrees Celsius, followed by rapid cooling after heating;

(4) Although universal welding techniques can be used for welding, the most appropriate welding methods are manual arc welding and tungsten inert gas welding.

Super Austenitic Stainless Steel includes: S30432,S31042,N0367,904L,Nitronic 40,Nitronic 60,XM-19 etc.

Classification and Characteristics:

(1) 6 Molybdenum Super Austenitic Stainless Steel

The molybdenum content is 6% or slightly higher, represented by AL-6XN and 254 SMO; The common feature of the 6-molybdenum super austenitic stainless steel family is that they all have very high resistance to pitting and crevice corrosion.

(2) 7 Molybdenum based Super Austenitic Stainless Steel

The molybdenum content is 7% or slightly higher, represented by 654 SMO; The anti-corrosion ability is comparable to the best nickel based alloys.

Super austenitic stainless steel pipes are renowned for their excellent corrosion resistance, high strength, and good welding performance. Its chemical composition has been carefully designed to achieve optimal corrosion resistance and mechanical properties. In addition, super austenitic stainless steel pipes also have excellent high-temperature resistance, allowing them to maintain stable performance in extreme environments.

In terms of application, super austenitic stainless steel pipes are widely used in multiple industries such as petroleum, chemical, pharmaceutical, and food. Due to its excellent corrosion resistance, super austenitic stainless steel pipes perform excellently in corrosive environments such as acid and alkali, effectively reducing equipment maintenance costs. In addition, the high strength and good welding performance of super austenitic stainless steel pipes also make them highly favored in pipeline engineering, providing strong guarantees for the smooth progress of various engineering projects.

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FAQ

1. who are we?
We are based in Hunan, China, start from 2003,sell to Southeast Asia(30.00%),South America(25.00%),Domestic Market(15.00%),North America(5.00%),Africa(5.00%),Mid East(5.00%),Oceania(3.00%),Eastern Asia(2.00%),Central America(2.00%),Northern Europe(2.00%),Southern Europe(2.00%),South Asia(2.00%),Eastern Europe(1.00%),Western Europe(1.00%). There are total about 11-50 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.what can you buy from us?
stainless steel pipe,casing and tubing and forging,Nickel based alloy steel pipe,AMS standard tube and bar,any machined part with drawings,processing services

4. why should you buy from us not from other suppliers?
Strong financial support:we can handle max amount 100-500 million dollars for an order.

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