What is the use of molybdenum in SS316?

What is the use of molybdenum in SS316?

304 Stainless Steel vs 316
Cost
The cost of stainless steel is largely determined by the alloys in its composition. All stainless steels require at least 10.5% chromium, and they are alloyed with iron, which makes up a large proportion of the final composition. However, the presence of various other elements affects the performance and characteristics of the stainless steel, and ultimately the cost.
316 stainless steel contains at least 2.0% molybdenum, which makes it much more corrosion resistant than 304 stainless steel, but also generally makes 316 a more expensive grade of metal because molybdenum is a more expensive element.

Magnetism
Both grades of stainless steel are austenitic, which means they are not magnetic, but cold working may affect magnetic properties. When stainless steel is formed or cut, its magnetic properties increase slightly, although this is only minimal.

Chemical composition

Corrosion resistance
As a member of the metal family, stainless steel itself has strong corrosion resistance, and the addition of molybdenum to 316 stainless steel makes it more resistant to harsh environments. 316 stainless steel is often called marine grade stainless steel and is suitable for environments that are more corrosive than the environment, but you still need to pay attention to cleaning the metal regularly to extend its service life.

Applications of 304 Stainless Steel

Most of the applications of 304 stainless steel are due to its high concentration of chromium, which gives it excellent corrosion resistance. These applications include:

· Used in the manufacture of kitchen appliances such as refrigerators and dishwashers

· Used in the manufacture of heat exchangers

· Used in the manufacture of commercial food processing equipment and kitchen accessories such as sinks and splashbacks

· Used in the manufacture of pans, utensils and flatware

· Used in the manufacture of architectural paneling

· Used in the manufacture of nuts, bolts, screws and nuts

· Used in the manufacture of brewing, food and pharmaceutical production equipment

Typically, stainless steel is used in applications where standard carbon steel would corrode.

Applications of 316 Stainless Steel

316 stainless steel was originally developed for paper mills. Today, it is used in a wide variety of applications, including:

· Manufacturing of food, chemical and petroleum production and processing equipment

· Manufacturing of laboratory benches and equipment

· Building paneling in coastal areas

· Marine fittings

· Mining screens

· Kitchenware, sanitary ware and sinks

· Pipes

· Medical implants

316 stainless steel has better corrosion resistance than stainless steel and generally exhibits higher strength at high temperatures.