Sumer Metal Industries Private Limited manufactures, supplies, and exports Nickel 20 (Alloy 20 / 20Cb-3 / UNS N08020) Clad Tubes tailored for corrosive chemical-process environments. Their Nickel 20 clad tubes combine the corrosion resistance of Alloy 20 with a substrate chosen for strength or cost-effectiveness, offering an economical way to use Alloy 20’s chemistry where only the process-facing surface needs the alloy’s resistance. Alloy 20 tubes from Sumer Metal Industries are produced to meet common international standards and undergo heat-treatment and testing to ensure consistent microstructure and weldability.
These clad tubes are actively exported by the company to the Gulf region (Oman, Qatar, Saudi Arabia, the UAE, Kuwait), to European buyers (Spain, Germany), and to North America (USA, Canada), as well as several countries across Africa — markets that commonly require materials resistant to sulfuric, phosphoric, or nitric acid and chloride-containing environments. Sumer Metal Industries services customers in heat exchangers, chemical reactors, piping, and valve internals where superior corrosion resistance is required on the product-facing surface. (Export markets listed per your request; product applications summarized from Alloy 20 industry use.)
Performance highlights: Nickel 20 clad tubes deliver excellent resistance to hot sulfuric acid, good resistance to phosphoric and nitric acids, and improved resistance to chloride stress-corrosion cracking compared with many standard stainless steels. The presence of copper and molybdenum in the Alloy 20 surface layer helps protect against acid attack and pitting, while niobium (columbium) stabilization minimizes carbide precipitation during welding — an important advantage in welded clad constructions.
Manufacturing & quality: Sumer Metal Industries manufactures clad tubes using controlled cladding methods (e.g., explosion cladding, roll bonding or weld overlay depending on specs) with final inspection and NDT where required. Finished tubes are supplied per applicable ASTM/ASME specifications (for example ASTM B729/B464 for Alloy 20 tubes and related ASME designations), and the company can supply mill test reports, PMI/chemical verification, and traceable documentation on request. Typical delivery lengths, end finishes, and testing regimes are offered to suit process, fabrication and export requirements.
| Property / Feature | Specification / Standard |
|---|---|
| Material | Nickel 20 (Alloy 20 / UNS N08020) Clad Tubes |
| Cladding Composition | Ni 32–38%, Cr 19–21%, Cu 3–4%, Mo 2–3%, Nb stabilized, C ≤ 0.07%, Fe balance |
| Backing Material | Carbon steel, Stainless Steel, or as per customer requirement |
| Standards | ASTM B729 / B464, ASME SB729 / SB464, DIN / EN equivalent on request |
| Tensile Strength | ~620 MPa (90,000 psi) |
| Yield Strength (0.2% offset) | ~300 MPa (35,000–45,000 psi) |
| Elongation | 30–41% |
| Hardness | ≤ 217 HB |
| Equivalent Grades | UNS N08020, 20Cb-3, EN 2.4660, Carpenter 20, Incoloy® 020 |
| Applications | Sulfuric, phosphoric, nitric acid service, process piping, heat exchangers, pumps, valves |
| Export Markets | Oman, Qatar, Saudi Arabia, UAE, Kuwait, Spain, Germany, USA, Canada, Africa |
| Element | Typical Range (wt%) |
|---|---|
| Nickel (Ni) | 32.0 – 38.0 |
| Chromium (Cr) | 19.0 – 21.0 |
| Copper (Cu) | 3.0 – 4.0 |
| Molybdenum (Mo) | 2.0 – 3.0 |
| Niobium (Nb / Cb) | (8 × C) – 1.0 max (stabilizer) |
| Carbon (C) | ≤ 0.07 |
| Iron (Fe) | Balance (~31 – 44) |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.035 |
| Property / Feature | Specification / Standard |
|---|---|
| Material | Nickel 20 (Alloy 20 / UNS N08020) Clad Tubes |
| Cladding Composition | Ni 32–38%, Cr 19–21%, Cu 3–4%, Mo 2–3%, Nb stabilized, C ≤ 0.07%, Fe balance |
| Backing Material | Carbon steel, Stainless Steel, or as per customer requirement |
| Standards | ASTM B729 / B464, ASME SB729 / SB464, DIN / EN equivalent on request |
| Tensile Strength | ~620 MPa (90,000 psi) |
| Yield Strength (0.2% offset) | ~300 MPa (35,000–45,000 psi) |
| Elongation | 30–41% |
| Hardness | ≤ 217 HB |
| Equivalent Grades | UNS N08020, 20Cb-3, EN 2.4660, Carpenter 20, Incoloy® 020 |
| Applications | Sulfuric, phosphoric, nitric acid service, process piping, heat exchangers, pumps, valves |
| Export Markets | Oman, Qatar, Saudi Arabia, UAE, Kuwait, Spain, Germany, USA, Canada, Africa |