We are manufacturer and exporters for 4A, 5A, 6A – Duplex & Super Duplex Stainless Steel Billets in India.

4A duplex stainless steel billets are distinguished by their high strength, outstanding corrosion resistance, and weldability. They contain at least 3.5% molybdenum, which makes them very resistant to pitting and crevice corrosion in chloride-containing environments. The microstructure of 4A duplex stainless steel billets is composed of austenite and ferrite, which provides excellent strength, toughness, and resistance to stress corrosion cracking.

The typical applications of 4A duplex stainless steel billets include:

• Heat exchangers and condensers in power generation and chemical processing industries
• Piping and tubing in oil and gas production and transportation
• Marine hardware and equipment, such as propeller shafts and pumps
• Desalination plants and seawater handling systems

4A Duplex Stainless Steel Billets Specification

4A Duplex Stainless Steel Billets Chemical Composition

4A Duplex Billets Mechanical Properties

4A Duplex Billets Cross Reference Table

5A duplex stainless steel billets are more corrosion resistant and stronger than 4A duplex stainless steel billets. They include at least 4.5% molybdenum, which increases their resistance to pitting and crevice corrosion in harsh situations. The microstructure of 5A duplex stainless steel billets is identical to that of 4A, consisting of austenite and ferrite phases.

The typical applications of 5A duplex stainless steel billets include:

• High-temperature and high-pressure applications in power generation and chemical processing industries
• Seawater injection systems and desalination plants
• Oil and gas production and transportation, including subsea and offshore applications
• Chemical processing and storage facilities

5A Duplex Stainless Steel Billets Specification

5A Billets Chemical Composition

Duplex Steel 5A Billets Mechanical Properties

5A Duplex Billets Cross Reference Table

6A super duplex stainless steel billets are the most corrosion-resistant and durable of the duplex stainless steel billets. They include at least 6.5% molybdenum, which gives excellent resistance to pitting and crevice corrosion in very aggressive conditions, including those with high amounts of chloride and sulfide ions. The microstructure of 6A super duplex stainless steel billets is distinguished by a high ferrite content, which results in excellent strength, toughness, and resistance to stress corrosion cracking.

The typical applications of 6A duplex stainless steel billets include:

• Extremely corrosive conditions, such as sour gas and high-temperature applications, in the production and transportation of oil and gas.
• Applications involving high temperatures and high pressures in the sectors that produce electricity and treat chemicals.
• Marine hardware and equipment in extreme seawater conditions, including pumps and propeller shafts.
• Systems for desulfurizing flue gases and other extremely corrosive uses.

6A Duplex Stainless Steel Billets Specification

6A Billets Chemical Composition

Duplex Steel 6A Billets Mechanical Properties

6A Duplex Billets Cross Reference Table

EXPORT DESTINATIONS FOR 4A/5A/6A Duplex & Super Duplex Steel Billets

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