Super duplex steel coils stand out as a top choice for various applications demanding exceptional strength, corrosion resistance, and durability. Among the leading suppliers in India, Calico Metal Alloy Pvt Ltd has carved a niche for itself by offering premium quality super duplex steel coils. This comprehensive guide aims to elucidate the significance, specifications, chemical composition, mechanical properties, and the reasons behind choosing Calico Metal Alloy Pvt Ltd as your preferred supplier of super duplex steel coils.
What are Super Duplex Steel Coils?
Super duplex stainless steel is a robust alloy renowned for its exceptional combination of properties derived from its dual-phase microstructure. Comprising austenitic and ferritic phases, super duplex steel exhibits high strength, excellent corrosion resistance, and superior toughness compared to conventional duplex and austenitic stainless steels.
Equivalent Grade of Super Duplex Steel Coils
Super duplex steel coils typically conform to various international standards such as ASTM, ASME, EN, and DIN. Common equivalent grades include UNS S32750 (F53), UNS S32760 (F55), and EN 1.4410. These grades ensure compatibility with diverse industrial specifications and applications.

Manufacturing Process Of Super Duplex Coils
Reheating Furnace
Reheating furnaces are used in hot rolling mills to heat the steel stock to the rolling temperatures.
Scale Breaker
Slab moves first through a scale breaker, which is a two-high rolling mill with vertical rolls that loosens the furnace scale and removes it with high-pressure water jets.
Finish Rolling
The last stage of the rolling process is cold rolling,
Cooling
Cooling or Quenching is a process of cooling a metal at a rapid rate.
Skin Pass Mill
This produces high-gloss surfaces and achieves the desired mechanical strip properties such as deep-drawing strength.
Marking & Packing
Proper packaging and labeling not only makes the final product look attractive but also save a huge amount of money by saving the product from wrong handling.
Specifications of Super Duplex Steel Coils
Super duplex steel coils are available in a range of sizes, thicknesses, and surface finishes to meet specific requirements. Typical specifications include coil width, coil weight, thickness tolerance, surface finish, and packaging options. These specifications ensure versatility and suitability for various fabrication processes and end-use applications.
Super Duplex Steel Coils Chemical Composition
The chemical composition of super duplex steel coils plays a pivotal role in determining their mechanical properties and corrosion resistance. Typical elements include:
- Chromium (Cr): Enhances corrosion resistance and oxidation resistance.
- Nickel (Ni): Contributes to toughness and corrosion resistance.
- Molybdenum (Mo): Improves pitting and crevice corrosion resistance.
- Nitrogen (N): Strengthens the austenitic phase and enhances corrosion resistance.
The precise composition may vary depending on the grade and specific requirements of the application.
Super Duplex Steel Coils Mechanical Properties
Super duplex steel coils exhibit impressive mechanical properties, making them suitable for demanding applications in industries such as oil and gas, chemical processing, marine engineering, and more. Key mechanical properties include:
- Ultimate Tensile Strength: Typically ranging from 750 MPa to 1000 MPa, super duplex steel coils offer exceptional strength, allowing them to withstand high mechanical loads.
- Yield Strength: With yield strengths exceeding 550 MPa, super duplex steel coils exhibit superior resistance to deformation under stress.
- Elongation: Super duplex steel coils demonstrate significant elongation, indicating good ductility and formability.
- Hardness: Depending on the grade and heat treatment, super duplex steel coils can possess varying levels of hardness, ensuring resistance to abrasion and wear.
Why Choose Calico Metal Alloy Pvt Ltd?
Calico Metal Alloy Pvt Ltd is the preferred choice for super duplex steel coils due to its unwavering commitment to quality, extensive product range, technical expertise, timely delivery, and unmatched customer satisfaction. With a team of experienced professionals and rigorous quality control measures, we ensure superior products that meet international standards and customer specifications. Their dedication to responsiveness, reliability, and transparency fosters long-term partnerships, making them the trusted supplier for discerning customers seeking excellence in super duplex steel solutions.
Super Duplex Steel Coil Specifications
Specifications | ASTM A240 / ASME SA240 |
Dimensions | ASTM, ASME, and API |
Width | 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc |
Thickness | 4mm-100mm |
Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc |
Surface Finish | 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, hairline, sand blast, Brush, etching, Hot rolled coil (HR), Cold rolled coil (CR), SATIN (Met with Plastic Coated) etc |
Hardness | Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc. |
Form | Coils, Foils, Rolls, Plain Coil, Shim Coil, Strip |
Types Of Super Duplex Stainless Steel Coil
Super Duplex Steel Hot Rolled Coil

Super Duplex Steel Cold Rolled Coil

Super Duplex Steel Foils

Super Duplex Steel Plain Coil

Super Duplex Steel Shim Coil

Super Duplex Steel Slit Coil

Other Types Of Super Duplex Steel Coils
SDSS Coils | Super Duplex Steel Cold Rolled Coil |
2D Finish Super Duplex Steel Coil | Super Duplex Steel BA Finish Coils |
Super Duplex Stainless Foils | Super Duplex Steel Plain Coil |
Super Duplex Steel Shim Coils | Super Duplex Steel Strip |
Super Duplex Stainless Steel Coils | Super Duplex Steel 2D Finish Coils |
SDSS Coils | Super Duplex Stainless 2B Finish Coils |
ASME SA240 Super Duplex Steel Cold Rolled Coils | ASTM A240 Super Duplex Steel Coil |
Super Duplex Matt PVC Coils | Super Duplex Stainless Steel Slit Coils |
Super Duplex Slit Coils | Super Duplex Steel HR Coils |
Cut To Size Super Duplex Steel Coils | Super Duplex Steel Industrial Coils |
Super Duplex Coil Industrial Application

Electrical

Automotive

Construction

Defence

Pharmaceutical

Petroleum

Petrochemical

Milk & Dairy
Export & Supply Destinations Of Super Duplex Coils
Austria, Azerbaijan, Belarus, Belgium, Bulgaria, Croatia, Cyprus, Czechia/Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Netherlands, Norway, Poland, Portugal, Romania, Russia, Serbia, Slovakia, Spain, Sweden, Switzerland, Turkey, Ukraine, United Kingdom.
Afghanistan, Armenia, Azerbaijan, Bahrain, Bangladesh, Bhutan, British, China, Egypt, Hong Kong, India, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kuwait, Kyrgyzstan, Lebanon, Macau, Malaysia, Maldives, Mongolia, Myanmar, Nepal, North Korea, Oman, Philippines, Qatar, Russia, Saudi Arabia, Singapore, South Korea, Sri Lanka, Taiwan, Thailand, Turkey, United Arab Emirates, Vietnam.
Algeria, Angola, Botswana, Burkina Faso, Burundi, Cameroon, Central African Republic, Egypt, Eswatini, Ethiopia, Gambia, Kenya, Liberia, Libya, Madagascar, Mauritania, Mauritius, Morocco, Mozambique, Namibia, Niger, Nigeria, Rwanda, Senegal, Seychelles, South Africa, Tanzania, Tunisia, Uganda, Zambia, Zimbabwe.
Antigua and Barbuda, Bahamas, Barbados, Belize, Canada, Costa Rica, Cuba, Dominica, Dominican Republic, El Salvador, Grenada, Guatemala, Haiti, Honduras, Jamaica, Mexico, Nicaragua, Panama, Saint Lucia, Saint Vincent and the Grenadines, Trinidad and Tobago, United States of America.
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela.