Learn about Alloy 20, an austenitic Stainless Steel alloy that offers outstanding resistance to stress corrosion.
Alloy 20 Overview
Alloy 20 is an austenitic stainless steel specifically engineered to resist aggressive environments, particularly hot sulfuric acid, where traditional stainless steels like 316 would typically degrade. It offers outstanding resistance to stress-corrosion cracking, especially in boiling sulfuric acid concentrations between 20% and 40%. This alloy is widely used in chemical processing, pharmaceutical production, and food industry applications, including tanks, piping systems, and heat exchangers.
Alloy 20 Composition
| C | Si | Mn | P | S | Cr | mois | Ni | Cu | Nb | Fe | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Min % | – | – | – | – | – | 19 | 2 | 32.5 | 3 | 8xC | bal |
| Max % | 0,07 | 1 | 2 | 0,045 | 0,035 | 21 | 3 | 38 | 4 | 1 | – |
Designations and Specifications
Designations
- W.Nr 2.4660
- UNS N08020
Specifications
- ISO 15156-3
- NACE MR 0175
Applications
Common Alloy 20 applications include:
- Screens & Filtration
- Processing of Synthetic Rubber
- Pharmaceuticals
- Solvents
Résistance à la traction
| Condition | N/mm² | KSI |
|---|---|---|
| Annealed | <900 | <131 |
| Condition | As Drawn | |
|---|---|---|
| N/mm² | KSI | |
| Spring Temper | 1200 – 1800 | 174 – 261 |
Options de conditionnement
- Bobines
- Bobines
- Bars/Cut Lengths
- Emballage personnalisé disponible