Alloy 20, also known as Carpenter 20, is a nickel-iron-chromium alloy with additions of copper and molybdenum. It is designed for maximum resistance to acid attack, particularly sulfuric acid, and offers excellent resistance to stress-corrosion cracking and pitting.
Product Features
- Excellent resistance to sulfuric acid
- Good resistance to stress-corrosion cracking and pitting
- Good mechanical properties at both ambient and elevated temperatures
- Good weldability and formability
1. Chemical Composition of Alloy 20 Sheets & Plates
| Brands No. | Alloy | Ni | Cr | Mo | Fe | Cu | S | C | Mn | Si | Nb+Ta | P |
| Carpenter 20Cb3 | Alloy 20 | 32.0%-38.0% | 19.0%-21.0% | 2.0%-3.0% | balance | 3.0%-4.0% | 0.03% | ≤0.07% | ≤2.0% | ≤1.0% | 8*C，≤1.0% | 0.03% |
2. Physical Properties of Alloy 20 Sheets & Plates:
| Physical properties | Mechanical Properties & Others | ||||||
| Brands No. | Density g/cm3 | Melting point | Yield Strength | Tensile Strength Mpa | Elongation A5 % | Hardness HRB | |
| /℃ | Rp0.2(MPa) | Rp1.0(Mpa) | |||||
| Carpenter 20Cb3 | 8.10 | 1350～1400 | 620 | 300 | 40% | 50 | |
3. Product Implementation Standards:
| Trademark* | Material | UNS | W.Nr. | Density | Tube | Pipe |
| smls/wld | smls/wld | |||||
| Carpenter 20Cb3 | Alloy 20 | N08020 | 2.4660 | 8.10 | B729/B468 | B729/B464 |
4. Specifications Available for Alloy 20 Sheets & Plates:
- Available Forms: Sheet, plate, strip, bar, wire, pipe
- Thickness: 0.5 mm to 100 mm
- Width: Up to 2000 mm
- Length: Up to 6000 mm or custom lengths
5. Applications
- Chemical and petrochemical processing
- Food and dye production
- Heat exchangers
- Tanks and valves
- Pharmaceutical industry
6. Contact Us for More Information of Nickel Alloy Pipes and Tubes
As a Professional Nickel Alloy & Stainless Steel Pipes and Tubes Exporter, Southerly Special Alloy was founded in Dec-2021.Our core members have more than 5 years experience in Nickel Alloy and Stainless Steel manufacturing and related fields.We serve customers worldwide, our main markets are in Europe, Middle East, South East Asia, South America and Africa.
Please fill out the form below or send an email to sales@southerly-alloy.com for more information.