Stainless steel
1.4439 / 317LMN stainless steel
1.4439 is an austenitic stainless steel with raised N and Mo, EN X2CrNiMoN17-13-5, often called 317LMN. PREN above 1.4435, below 904L. INDUSTRISTÅL supplies bar with 3.1.
Typical applications
- Chemical process
- Chloride
- 317 specifications
Delivery conditions
- solution annealed
Designations
- W.Nr.
- 1.4439
- EN standard
- X2CrNiMoN17-13-5
- Group
- Stainless steel
Machinability and weldability
Yes. L carbon with nitrogen.
Sawing and machining
Sawing. State the dimension.
Certificates and documentation
EN 10204 3.1 as standard.
Dimension programme
| Form | Range | Note |
|---|---|---|
| Round bar | Ø8–200 mm | Solution annealed unless otherwise stated on the PO. |
| Flat bar | Cut to order | Stainless flat. |
| Plate | 2–50 mm thickness | State thickness and finish. |
| Seamless tube | Ø13.5–Ø508 mm | DN8–DN500. Wall up to 31 mm. ASME 1/4–16″. |
| Welded tube | Ø21.3–Ø610 mm | Welded stainless. Wall to ISO 1127. State whether the weld seam must be documented. |
| Fittings | Ø12–Ø2000 mm | ASME 1/2–60″ (Ø15–Ø1524 mm). Type A and B. Not a stock statement. |
| Flanges | Ø14–Ø2000 mm | ASME 1/2–60″ (Ø15–Ø1524 mm). PN 6–400. Not a stock statement. |
The range is a delivery programme, not a stock statement. Length is cut to your drawing.
Frequently asked questions
- What is 1.4439?
- 317LMN. Austenite with Mo and N, above 316L.
- 1.4439 or 904L?
- 904L when Cu and more Ni have to be included. 1.4439 when 317LMN is specified.
- Do you supply 1.4439?
- Yes. State Ø or plate thickness.
Read more
Send your enquiry
State grade, dimensions and quantity — or attach a drawing. We reply with a quote.