When standard stainless steel reaches its limit, Stainless Steel Duplex Chequered Sheets take over. Engineered for the most punishing environments on Earth from offshore oil rigs to high-acid chemical plants. Duplex flooring provides double the strength and significantly higher corrosion resistance than Grade 316L.
Our Stainless Steel Duplex Chequered Sheets combine the advantages of both austenitic and ferritic stainless steels, delivering outstanding performance in highly aggressive environments.
SS Duplex Chequered Sheets are stainless steel sheets manufactured from duplex grades featuring a dual-phase microstructure (austenite + ferrite). This unique composition offers:
- Nearly double the strength of standard austenitic stainless steels
- Superior resistance to stress corrosion cracking (SCC)
- Excellent resistance to pitting and crevice corrosion
- Improved fatigue strength
The raised diamond or five-bar pattern enhances traction and structural rigidity, making these sheets ideal for demanding environments.
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 22.0 – 23.0 |
| Nickel (Ni) | 4.5 – 6.5 |
| Molybdenum (Mo) | 3.0 – 3.5 |
| Nitrogen (N) | 0.14 – 0.20 |
| Manganese (Mn) | 2.0 (Max) |
| Carbon (C) | 0.03 (Max) |
| Phosphorus/Sulfur | Low Traces |
Mechanical Properties of Stainless Steel Duplex Chequered Sheet:
| Property | Metric Value |
|---|---|
| Tensile Strength (min) | 620 – 880 MPa |
| Yield Strength (0.2%, min) | 450 – 550 MPa |
| Elongation (min, in 50mm) | 25% – 30% |
| Hardness (Brinell) | 290 HB Max |
| Impact Strength | High (even at -40°C) |
Physical Properties of Duplex SS Chequered Sheets:
| Property | Value (Metric) |
|---|---|
| Density | 7.8 g/cm³ |
| Melting range | 1350-1450°C |
| Modulus of elasticity | 200 GPa |
| Thermal conductivity (RT) | 16-19 W/m·K |
| Thermal Expansion (RT) | 13.5-13.7 x 106/K |
| Specific Heat (32-212°F) | 450-500 J/kg·K |
| Electrical Resistivity | 0.85 x 106Ω·m |
Product Specifications:
| Category | Specifications |
|---|---|
| Manufacturing Standards | ASTM A240 (UNS S31803) |
| Global Equivalents | JIS, AISI, ASTM, GB, DIN, EN |
| Thickness Range & Finishes | Below 3mm(Cold Rolled) & (Hot Rolled) Above 3mm |
| Width Options | 1000 mm up to 3500 mm (Custom widths available) |
| Length Options | 2000 mm to 6000 mm (Customizable) |
High-Stakes Applications
Stainless steel duplex chequered sheets are the standard for industries where failure is catastrophic:
- Offshore & Marine: Helidecks, walkways, and stairs on oil rigs and FPSOs exposed to constant salt spray.
- Desalination Plants: Flooring for areas handling high-concentration brine and chlorides.
- Chemical Tankers:Cargo deck walkways where chemical spills and high physical impact occur simultaneously.
- Mining & Hydrometallurgy: High-load platforms in acidic leaching environments.
Consult Our Technical Specialists. We offer precision plasma/laser cutting and full Mill Test Certificate (MTC) traceability to EN 10204 3.1. Get your quote today!
Countries We Export
Macau, Philippines, Estonia, Slovakia, India, Switzerland, France, Gambia, United States, Nepal, Iran, Australia, Thailand, Gabon, Zimbabwe, Bangladesh, Angola, Lithuania, Kuwait, Kazakhstan, Trinidad & Tobago, Puerto Rico, Singapore, Mexico, Azerbaijan, Brazil, Bulgaria, United Arab Emirates, Tibet, Greece, South Africa, Afghanistan, Sri Lanka, Italy, China, Serbia, Turkey, Mexico, Bolivia, Peru, Chile, Belarus, Yemen, Namibia, Qatar, Algeria, Libya, Nigeria, Japan, Poland, Austria, Bhutan, Nigeria, Portugal, Czech Republic, Croatia, Jordan, Hungary, Finland, Pakistan, Spain, South Korea, Ecuador, Denmark, Canada, Kenya, Saudi Arabia, Vietnam, Sweden, Malaysia, Bahrain, Costa Rica, Venezuela, Israel, Netherlands, United Kingdom, New Zealand, Russia, Morocco, Poland, Indonesia, Hong Kong, Egypt, Oman, Norway, Chile, Iran, Lebanon, Taiwan, Ghana, Romania, Mongolia, Ukraine, Colombia, Tunisia, Ireland, Iraq, Belgium, Argentina, Germany.
Cities We Supply
Calgary, Al Jubail, Hong Kong, Bhopal, Jeddah, Toronto, Ulsan, Aberdeen, Thiruvananthapuram, Petaling Jaya, Nashik, Houston, Montreal, Cairo, Ernakulam, Atyrau, Karachi, Haryana, Istanbul, Jakarta, Sharjah, Nagpur, Dallas, Ranchi, Algiers, Doha, Santiago, Geoje-si, Singapore, Chennai, Jamshedpur, Perth, New Delhi, Tehran, Vadodara, New York, Caracas, Ahmedabad, Edmonton, Kanpur, Busan, Mumbai, Secunderabad, Bengaluru, Kolkata, Pimpri-Chinchwad, Manama, Vung Tau, Melbourne, Bangkok, Colombo, Ankara, Bogota, Sydney, Milan, Port-of-Spain, Abu Dhabi, Thane, Ahvaz, Visakhapatnam, Rajkot, Jaipur, Indore, Kuwait City, Gurgaon, Baroda, Navi Mumbai, La Victoria, Surat, Ludhiana, Lahore, Hanoi, Riyadh, Faridabad, Hyderabad, Coimbatore, Mexico City, Dubai, Al Khobar, Rio de Janeiro, Pune, Chiyoda, Moscow, Lagos, London, Madrid, Granada, Ho Chi Minh City, Brisbane, Chandigarh, Seoul, Courbevoie, Los Angeles, Gimhae-si, Dammam, Howrah, Muscat, Noida, Kuala Lumpur, Pondicherry, Tamil Nadu.
