317L Round Bar

Corten B Steel Plate Manufacturer


At Ratna Exports, we proudly boast of being the leading corten b plate supplier and their esteemed exporter globally. Our dedication to exceeding international quality standards has earned us clients’ trust worldwide, making us the go-to source for this remarkable material.

What are Corten B Plates?

Corten B Plates, also known as weathering steel plates, are a special type of steel renowned for their distinct character and exceptional durability. Crafted using a unique alloy composition, these plates develop a protective patina over time when exposed to the elements. This natural rust-like layer shields the underlying steel, offering superior resistance to atmospheric corrosion without the need for additional coatings.

Corten B steel Plate Price

Here’s an estimated price range of Corten B steel in INR based on current market rates:

Per kilogram

  • Typical range : ₹56 to ₹100 per kilogram
    • Common price points : ₹65-75 per kilogram for standard grade B plates
    • ₹80-100 per kilogram for thicker plates or specialized finishes

Per square foot

  • General range : ₹450 to ₹930 per square foot (assuming a thickness of 3mm and an average weight of 8 kg per square foot)

Factors influencing price

  • Thickness : Thicker plates cost more per kilogram and square foot.
  • Finish : Mill finish is usually the most affordable, while pre-rusted or customized finishes can increase the price.
  • Supplier : Prices vary among suppliers, so it’s essential to compare quotes.
  • Order quantity : Larger orders may be eligible for discounts.
  • Location : Transportation costs and regional market conditions can affect prices.

To get the best offers, You can contact us here.

Alternatively, you can also check our Corten A Steel Plate, which is also our high-quality product.

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Unmatched Versatility, Enduring Strength

Built to Last : These Plates boast exceptional strength, making them ideal for heavy-duty applications like bridges, industrial structures, and shipping containers. Their resistance to wear and tear ensures a long lifespan, minimizing maintenance costs and maximizing long-term value.

Aesthetics with an Edge : The distinctive patina developed by Corten B Plates creates a warm, earthy aesthetic that seamlessly integrates with natural landscapes. This unique visual appeal makes them a popular choice for architectural elements, sculptures, and outdoor furniture, adding a touch of rustic charm to any space.

Unleash Your Creativity : Corten B Plates are incredibly versatile, easily cut, fabricated, and welded into various shapes and forms. This opens up a world of design possibilities for architects, artists, and engineers, allowing them to bring their visions to life with unparalleled strength and beauty.

Advantages of Corten B

  • Minimal Maintenance : Unlike traditional steel, Corten B Plates require minimal upkeep. Their protective patina eliminates the need for frequent painting or coating, reducing maintenance costs and saving time and effort.
  • Cost-Effective Choice : The inherent durability and low maintenance needs of Corten B Plates make them a cost-effective solution in the long run. Their lifespan surpasses regular steel’s, minimizing replacement costs and maximizing your investment.
  • Sustainable Alternative : These Plates are an environmentally friendly choice due to their reduced need for surface treatments and frequent replacements. Their long lifespan further contributes to sustainable construction practices.

Your Trusted Partner in Corten B Plates

At Ratna Exports, we believe in quality without compromise. Our state-of-the-art facilities and highly skilled team ensure that every Corten B Plate delivered meets the highest international standards. We offer various sizes, thicknesses, and finishes to cater to your needs, delivering the perfect solution for your project.

We are dedicated to providing exceptional customer service, technical expertise, and timely delivery, ensuring your complete satisfaction.

Corten B Specifications:

Specifications ASTM A242/ ASME SA242
Dimensions ASTM, ASME, and API
Standard JIS, AISI, ASTM, GB, DIN, EN, etc.
Width 1500-3200mm
Thickness 2-460mm
Length 6000-12000mm
Hot Rolled Corten B Plate size 3-150mm * 900-4100mm * 3000-18000mm

Chemical Properties of Corten B


Corten B

C Si Mn P S Cr Ni Cu Al V
0.20 max 0.15 – 0.5 0.75 – 1.35 0.04 max 0.05 max 0.40 – 0.65 0.5 max 0.2 – 0.4 0.020 – 0.06 0.01 – 0.10

Mechanical Properties of Corten B


Yield strength

ReL N/mm² Minimum

Tensile strength Rm N/mm² Minimum

Elongation A50%


Corten B 345 485 min 8

Corten B Grade Equivalent

Steel Grade EN 10025-5:2004
COR-TEN C S355J0W and S355J2W

Corten B Test Certificates

Ratna Exports provides Manufacturer TC (Test Certificate) by EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, and Third Party Inspection Report. We also provide Standard certificates and additional requirements.

  • EN 10204/3.1B,
  • Raw Materials Certificate
  • 100% Radiography Test Report
  • Third-Party Inspection Report, etc

ASTM, ASME Corten B Value Added Services

Material Testing:

At Ratna Exports ensure that all our materials go through strict quality tests before dispatching them to our clients.

  • Mechanical Testing Such as Tensile of Area
  • Hardness Test
  • Chemical Analysis – Spectro Analysis
  • Positive Material Identification – PMI Testing
  • Flattening Test
  • Micro and MacroTest
  • Pitting Resistance Test
  • Flaring Test
  • Intergranular Corrosion (IGC) Test


  • Commercial Invoice, which includes HS Code
  • Packing List including net weight and gross weight, number of boxes, Marks, and Numbers
  • Certificate of Origin legalized/attested by the Chamber of Commerce or Embassy
  • Fumigation Certificates
  • Raw Material Test Reports
  • Material Traceability Records
  • Quality Assurance Plan (QAP)
  • Heat Treatment Charts
  • Test Certificates certifying NACE MR0103, NACE MR0175
  • Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2
  • Guarantee Letter
  • NABL-approved Laboratory Test Reports
  • Welding Procedure Specification/Procedure Qualification Record, WPS/PQR
  • Form A for the Generalized System of Preferences (GSP)

Corten B Application Industries

  • Off-Shore Oil Drilling Companies
  • Power Generation
  • Petrochemicals
  • Gas Processing
  • Specialty Chemicals
  • Pharmaceuticals
  • Pharmaceutical Equipment
  • Chemical Equipment
  • Sea Water Equipment
  • Heat Exchangers
  • Condensers
  • Pulp and Paper Industry

Corten B Packaging

Corten B is widely used in various industries, including petrochemical, oil and gas, power generation, bulk liquid transportation, chemicals, pharmaceuticals, pulp and paper manufacturing, textiles, etc. International standards manufacture all our Corten B. Corten B is packaged to ensure no damage during transit. In the case of exports, standard export packaging is done in wooden cases. All Corten B are marked with Grade, Lot No, Size, Degree, and our trademark. We can also make custom markings on Tube Insert on special requests.

Countries We Export:

Afghanistan, Albania, Algeria, Andorra, Angola, Antigua-Barbuda Argentina, Armenia, Australia, Austria, Azerbaijan, Bahamas, Bahrain, Bangladesh, Barbados, Belarus, Belgium, Belize, Benin, Bhutan, Bolivia, Bosnia-Herzegovina, Botswana, Brazil, Brunei, Bulgaria, Burkina-Faso, Burundi, Côte d’Ivoire, Cabo Verde, Cambodia, Cameroon, Canada, Central African Republic, Chad, Chile, China, Colombia, Comoros, Congo (Congo-Brazzaville), Costa-Rica, Croatia, Cuba, Cyprus, Czechia (Czech Republic), Democratic Republic of the Congo, Denmark, Djibouti, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Estonia, Eswatini (fmr. “Swaziland”), Ethiopia, Fiji, Finland, France, Gabon, Gambia, Georgia, Germany, Ghana, Greece, Grenada, Guatemala, Guinea, Guinea-Bissau, Guyana, Haiti, Holy See, Honduras, Hungary, Iceland, India, Indonesia, Iran, Iraq, Ireland, Israel, Italy, Jamaica, Japan, Jordan, Kazakhstan, Kenya, Kiribati, Kuwait, Kyrgyzstan, Laos, Latvia, Lebanon, Lesotho, Liberia, Libya, Liechtenstein, Lithuania, Luxembourg, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Marshall Islands, Mauritania, Mauritius, Mexico, Micronesia, Moldova, Monaco, Mongolia, Montenegro, Morocco, Mozambique, Myanmar (formerly Burma), Namibia, Nauru, Nepal, Netherlands, New Zealand, Nicaragua, North Korea, North Macedonia, Norway, Oman, Pakistan, Palau, Palestine-State, Panama, Papua, New Guinea, Paraguay, Peru, Philippines, Poland, Portugal, Qatar, Romania, Russia, Rwanda, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Samoa, San Marino, Sao Tome and Principe, Saudi Arabia, Senegal, Serbia, Seychelles, Sierra Leone, Singapore, Slovakia, Slovenia, Solomon Islands, Somalia, South Africa, South Korea, South Sudan, Spain, Sri Lanka, Sudan, Suriname, Sweden, Switzerland, Syria, Tajikistan, Tanzania, Thailand, Timor-Leste, Togo, Tonga, Trinidad and Tobago, Tunisia, Turkey, Turkmenistan, Tuvalu, Uganda, Ukraine, United Arab Emirates, United Kingdom, United States of America, Uruguay, Uzbekistan, Vanuatu, Venezuela, Vietnam, Yemen, Zambia, Zimbabwe.

Cities We Supply:

London, New-York, Paris, Moscow, Tokyo, Dubai, Singapore, Barcelona, Los-Angeles, Madrid Rome, Chicago, Toronto, San-Francisco, Abu-Dhabi, St-Petersburg, Amsterdam, Berlin Prague, Washington,Istanbul, Las-Vegas, Doha, Seoul, Sydney, Beijing,  Miami, Munich, Milan, San-Diego, Bangkok, Vienna, Dublin, Vancouver, Boston,  Zurich,  Melbourne, Budapest, Houston, Seattle, Montreal, Hong-Kong, Frankfurt, Sao-Paulo, Tel-Aviv, Copenhagen, Calgary, Orlando, Atlanta, Dallas, Hamburg, Osaka, Lisbon, Austin, Phoenix Naples, Oslo, Denver, Stockholm, Riyadh, Delhi, Buenos Aires, San-Jose, Brussels, Portland Philadelphia, Ottawa, Helsinki, Valencia, Brisbane, Warsaw, Minneapolis, Shanghai, Lyon, Adelaide, Edmonton, Marseille, Muscat, Athens, Stuttgart, Rio-De-Janeii, Baltimore, Auckland, Cologne, New-Orlean, Kuwait-City,  Kiev, Hanover, Perth, Minsk, Bucharest, Nashville, Dusseldorf, Manchester, Sacramento, Glasgow, Mexico-City, Salt-Lake-Ci, Raleigh, Cracow