1.4541 stainless steel pipe is a stainless steel alloy also known as X6CrNiTi18-10 or AISI 321. It is an iron-based alloy containing elements such as chromium, nickel and titanium. 1.4541 heat-resistant stainless steel pipe has good corrosion resistance in high temperature and highly corrosive environments, so it is widely used in furnace tubes, burners, storage tanks, food processing equipment and other fields.
The chromium element in 1.4541 alloy steel pipe can improve the corrosion resistance of the alloy. Chromium element can form a Cr2O3 protective film with oxygen to prevent oxygen from continuing to corrode steel, thus improving the corrosion resistance of steel. Nickel element can increase the strength and toughness of stainless steel and improve the processing performance of stainless steel. Nickel prevents stress corrosion cracking in stainless steel under high temperatures and corrosive environments.
DIN 1.4541 Pipes Seamless Pipes Equivalent Grades
| Grade | 321 | |
| UNS No | S32100 | |
| Old British | BS | 321S31 |
| En | 58B, 58C | |
| Euronorm | No | 1.4541 |
| Name | X6CrNiTi18-10 | |
| Swedish SS | 2337 | |
| Japanese JIS | SUS 321 | |
DIN 1.4541 Pipes Chemical Composition
|
Grade
|
DIN 1.4541 | |
|---|---|---|
| min | max | |
| C | – | 0.08 |
| Mn | – | 2.0 |
| Si | – | 0.75 |
| P | – | 0.045 |
| S | – | 0.030 |
| Cr | 17.0 | 19.0 |
| Mo | – | – |
| Ni | 9.0 | 12.0 |
| N | – | 0.10 |
Stainless Steel DIN 1.4541 Seamless Pipes
Production Process
1.4541 stainless steel pipe is usually produced by electric arc furnace melting method or induction furnace melting method. The electric arc furnace smelting method is to add pig iron, scrap steel and alloy materials into the electric arc furnace for smelting. The induction furnace melting method uses induction heating to heat metal materials to a molten state.
Stainless steel round tube 1.4541 can be heat treated to improve its properties. Commonly used heat treatment methods include annealing, solution treatment and quenching. Annealing refers to heating steel to a certain temperature and then slowly cooling it to improve its plasticity and toughness. Solution treatment refers to heating steel to a certain temperature and then rapidly cooling it in water to improve its strength and hardness. Quenching refers to heating steel to a certain temperature and then cooling it rapidly to change its structure and thereby improve its properties.
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