Chemical Composition of Austenitic Stainless Steel S31848 0Cr18Ni16Mo5

The chemical composition of 0Cr18Ni16Mo5 austenitic stainless steel S31848

Austenitic stainless steel S31848, also known as 0Cr18Ni16Mo5, is a stainless steel that contains chromium, nickel, and molybdenum as alloying elements. Chromium is the most important alloying element of this steel, providing the steel with excellent corrosion resistance and good formability. In addition, its specific resistance to creep is valuable at high temperatures.

The chemical composition of 0Cr18Ni16Mo5 austenitic stainless steel is detailed in the following table:

Element Content (%)

Carbon (C) ≤ 0.030

Manganese (Mn) ≤ 0.030

Phosphorus (P) ≤ 0.035

Sulfur (S) ≤ 0.030

Chromium (Cr) 17.0-19.0

Nickel (Ni) 15.0-17.0

Molybdenum (Mo) 4.5-5.5

Silicon (Si) ≤ 1.00

Titanium (Ti) ≤ 0.30

Iron (Fe) Balance

Vanadium (V) ≤ 0.20

Aluminum (Al) ≤ 0.03

Nitrogen (N) ≤ 0.020

Copper (Cu) ≤ 0.50

The balance between the elements in this stainless steel produces a unique combination of properties that makes it ideal for a variety of applications in the industrial and hospitality market such as production wellheads, petrochemical poles, sealing plates, fasteners and exhaust fixtures.

The austenitic stainless steel S31848 is characterized by its excellent strength and ductility in both hot and cold working conditions, offering exceptional resistance to stress corrosion cracking and general corrosion. Its high chromium and molybdenum content provide the steel with excellent resistance to pitting, crevice and stress corrosion cracking in warm chloride environment, as well as to sulfuric acid.

The austenitic stainless steel S31848 is also characterized by its high creep strength at high temperatures, making it suitable for applications that require prolonged exposure to service temperatures of up to 550℃ (1021 F). The steel also provides good resistance to oxidation at high temperatures and offers excellent non-magnetic properties, especially at large temperature ranges.

Additionally, 0Cr18Ni16Mo5 austenitic stainless steel has superior formability, allowing it to be readily shaped into complicated parts. Its good machinability and excellent weldability properties make this steel a cost-effective choice for fabricating components or vessels with complex shapes.

Finally, the austenitic stainless steel S31848 is easy to clean and maintain, making it suitable for applications where hygiene is paramount. Also, the steel performs well in acidic and alkaline environments.

Therefore, 0Cr18Ni16Mo5 austenitic stainless steel S31848 is an ideal choice for a broad range of industrial and commercial applications due to its outstanding mechanical, corrosion, and creep properties.

0Cr18Ni16Mo5 (Austenitic stainless steel S31848) is a kind of Austenitic stainless steel featured with good comprehensive performance, corrosion resistance, high temperature strength and low temperature toughness. Its chemical composition is as follows:

Carbon(C):≤ 0.025%;

Manganese(Mn):≤ 1.75%;

Silicon(Si):≤ 0.8%;

Phosphorus(P):≤ 0.045%;

Sulfur(S):≤ 0.03%;

Chromium(Cr):18-20%;

Nickel(Ni):14-17%;

Molybdenum(Mo):5-7%;

Nitrogen(N):≤ 0.12%;

Iron(Fe): basis.

The features of 0Cr18Ni16Mo5 steel are as follows:

1. It contains a high content of chromium element and low content of carbon, so it has excellent corrosion resistance and high temperature resistance.

2. It has good toughness even in low temperature condition. The molybdenum addition improves this steel’s cold forming property.

3. The high nickelcontent further ensures its good plasticity and weldability.

4. It has excellent heat resistance and strong resistance to stress corrosion cracking.

Due to these outstanding properties, 0Cr18Ni16Mo5 steel has wide application in reaction pressure equipments, containers and nuclear reactors etc. Furthermore, its chemical stability and corrosion resistance even make it suitable for architectural materials and medical equipments that have been processed by welding, heat or corrosion treatment.