Delivering High Quality Stainless Steel and Alloy Piping Products — Pipes, Tubes, Fittings, Flanges and more for Global Industries.
sales@savoypipinginc.com
Delivering High Quality Stainless Steel and Alloy Piping Products — Pipes, Tubes, Fittings, Flanges and more for Global Industries.
sales@savoypipinginc.com
UNS S31803 is the duplex chemistry many drawings still call out by number. In practice it sits in the 2205 family alongside S32205 — higher strength and better chloride behaviour than 316L.
Broader duplex hub: Duplex 2205. Spec page: ASTM A240 duplex. Step-up: super duplex.
UNS S31803 Duplex (S31803 / S32205) is a dual-phase stainless — roughly half ferrite, half austenite — used when 316L runs out of chloride resistance or strength. Confirm whether the PO wants S31803, S32205, or dual cert.
Pressure equipment, seawater-facing work, and process plant where PREN and yield both matter. Step up to super duplex for tougher chloride duty.
Send UNS (S31803 / S32205 / dual), form, thickness, size, finish, quantity and destination — plus any PREN or ferrite-number notes. Email sales@savoypipinginc.com.
Duplex flats and nearby grades
Heat-analysis limits for duplex plate ordered as UNS S31803 / S32205 under ASTM A240 / ASME SA-240.
Values below follow ASTM A240/A240M / ASME SA-240 (heat analysis, mass %). Confirm against the edition named on the purchase order.
| UNS | C | Mn | P | S | Si | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|---|
| S31803 | 0.030 max | 2.00 max | 0.030 max | 0.020 max | 1.00 max | 21.0–23.0 | 4.5–6.5 | 2.5–3.5 | 0.08–0.20 |
| S32205 | 0.030 max | 2.00 max | 0.030 max | 0.020 max | 1.00 max | 22.0–23.0 | 4.5–6.5 | 3.0–3.5 | 0.14–0.20 |
Minimum tensile requirements from ASTM A240 / ASME SA-240 Table 2.
| UNS | Tensile min, MPa (ksi) | Yield 0.2% min, MPa (ksi) | Elongation min, % | Hardness max |
|---|---|---|---|---|
| S31803 | 620 (90) | 450 (65) | 25 | 293 HBW / 31 HRC |
| S32205 | 655 (95) | 450 (65) | 25 | 293 HBW / 31 HRC |
S31803 is the duplex chemistry in the 2205 family; many packages also reference S32205. Confirm which the PO allows.
When PREN / corrosion modelling shows 2205 is still light — see super duplex.
UNS / grade, thickness, size, finish, quantity and destination. Email sales@savoypipinginc.com.
UNS S31803 Duplex Stainless Steel Plates is Covered with Plastic Cloth and Packed in Wooden box-a, Wooden Pallet and Wooden Fumigated Carrate. Our Packaging is Fully Waterproof and Safe for Transport with Proper Strips on Wooden box-a, having Lifting Point.
We Export UNS S31803 Duplex Stainless Steel Plates to Saudi Arabia, Iran, Iraq, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen , Syria, Israel, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Myanmar, Taiwan, Cambodia, Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States Of America, Canada, Mexico, Panama, Costa Rica, Puerto Rico, Trinidad And Tobago, Jamaica, Bahamas, Denmark, Russia, Norway, Germany, France, Italy, United Kingdom, Spain, Ukraine, Netherlands, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Croatia, Slovenia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, The Republic Of Congo, Gabon, Europe, Africa, Asia, North America, South America, Middle East, Far East.etc
We Supply UNS S31803Duplex Stainless Steel Plate Andhra Pradesh, Arunachal Pradesh, Assam, Bihar, Chhattisgarh, Goa, Gujarat, Haryana, Himachal Pradesh, Jammu and Kashmir, Jharkhand, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Manipur, Meghalaya, Mizoram, Nagaland, Odisha, Punjab, Rajasthan, Sikkim, Tamil Nadu, Telangana, Tripura, Uttar Pradesh, Uttarakhand, West Bengal, Mumbai, Navi Mumbai, Pune, Nashik, Nagpur, Solapur, Kolhapur, Ambernath, Ahmednagar, Latur, Ahmadabad, Surat, Rajkot, Vadodara, Panaji, Madgaon, Chennai, Kolkata, Hyderabad, Bengaluru, Delhi, New Delhi, Ludhiana, Chandigarh, Raipur, Bhopal, Jamshedpur, Vishakhapatnam, Cochin, Ghaziabad, Noida, Gurugram, Bhillai, Durgapur, Vijaywada, Kanpur etc.
Savoy Piping Inc., is a well known worldwide Exporter of UNS S31803 Duplex Stainless Steel Plates, Savoy Piping Inc., is committed to provide each and every customer with the highest standard of customer service. We deal in UNS S31803 Duplex Stainless Steel Plate in India and Overseas, offering a wide range of UNS S31803 Duplex Stainless Steel Plate