1.4541 pipes – 321 stainless steel pipes EN 10216-5
1.4541 (321) is a titanium-stabilised austenitic stainless steel – intergranular-resistant even at higher temperatures, without molybdenum. ROHRLINE supplies 1.4541 pipes and tubes to EN 10216-5 and EN 10217-7 with EN 10204 3.1 inspection certificates – worldwide.
Application & properties
1.4541 (321) is a titanium-stabilised austenitic stainless steel – intergranular-resistant even at higher temperatures, without molybdenum.
- Exhaust and heat-exchanger construction
- Chemical and process plants at higher temperatures
- Welded apparatus and piping
Tell us the medium, temperature and pressure – we will check the grade with you.
Chemical composition
Typical values in wt.-% per EN standard (heat analysis).
| Element | Content (%) |
|---|---|
| C | ≤ 0.08 |
| Si | ≤ 1.00 |
| Mn | ≤ 2.00 |
| Cr | 17.0–19.0 |
| Ni | 9.0–12.0 |
| Ti | 5×C–0.70 |
Mechanical properties
Typical values at room temperature per EN standard.
| Property | Value |
|---|---|
| Yield strength Rp0.2 | ≥ 180 MPa |
| Tensile strength Rm | 460–680 MPa |
| Elongation A | ≥ 35 % |
Standards, equivalents & product forms
| Topic | Detail |
|---|---|
| Standards | EN 10216-5 (seamless), EN 10217-7 (welded), EN 10088 |
| ASME/ASTM equivalent | ~ AISI 321 |
| Material no. | 1.4541 |
| Short name / aka | X6CrNiTi18-10 · AISI 321 |
We supply 1.4541 as pipes, flanges and fittings – seamless or welded, on request with an EN 10204 3.1 / 3.2 mill certificate.
Supply programme & machining
| Item | Details |
|---|---|
| Dimensions (pipe) | Programme range: outside Ø 10.2 to 2,032 mm · DN 6 to DN 2000 · all standard wall thicknesses; available sizes depend on grade and standard |
| As flange & fitting | DN 10 to DN 1200 · PN 6 to PN 400 · Class 150 to Class 2500 to ASME B16.5 (to NPS 24), above that ASME B16.47 to Class 900 |
| Lengths & cutting | Mill lengths, sawn fixed lengths and fitting pieces from 0.1 to 12 m – sawn and bevelled |
| Minimum quantity | From a single item – from one fitting piece to the complete piping system |
| Availability | Common grades and sizes available at short notice, special sizes procured per project |
| Lead time | Standard sizes usually 3–5 working days; the binding date is confirmed with the quote |
| Machining | Sawing and bevelling, roll grooving for grooved couplings, threading to EN 10226, drilling, facing, bending with special radii |
| Surface | Blasting, coating and marking to customer specification |
| Certificates | Mill certificate 2.2, inspection certificate 3.1 to EN 10204 (standard with machining), 3.2 with notified body on request |
| Testing | Non-destructive testing by ultrasound, eddy current and X-ray, pressure test report on request |
These figures describe our supply programme. Which size is actually available in this grade is clarified with your enquiry – you usually receive the quote the same day.
We clarify availability, price and inspection certificate with your enquiry.
Frequently asked questions about 1.4541
What is the difference between 1.4541 and 1.4571?
Both are titanium-stabilised; 1.4571 (316Ti) additionally contains molybdenum and is thus more chloride-resistant, while 1.4541 (321) is molybdenum-free.
What is 1.4541 typically used for?
For higher-temperature welded applications such as exhaust lines and heat exchangers.
Which dimensions and certificates does ROHRLINE supply for 1.4541?
ROHRLINE supplies 1.4541 in the following range: Programme range: outside Ø 10.2 to 2,032 mm · DN 6 to DN 2000 · all standard wall thicknesses; available sizes depend on grade and standard. Documentation: Mill certificate 2.2, inspection certificate 3.1 to EN 10204 (standard with machining), 3.2 with notified body on request. Delivery worldwide; the binding date is confirmed with the quotation.
Typical industries
Request 1.4541?
Grade, standard, size, pressure rating and quantity are enough – on request with an EN 10204 3.1 / 3.2 mill certificate. Your quote usually the same day.
All data are typical values per the relevant EN standards for first orientation – without warranty. The applicable standard and the mill certificate of the delivery are decisive.