Stainless steel
304 / 1.4301 stainless steel
304 is an austenitic stainless steel with Werkstoffnummer 1.4301. The EN designation is X5CrNi18-10. It is the volume grade in stainless bar, plate and tube. 304L / 1.4307 when carbon has to come down. 316L when molybdenum has to be included. INDUSTRISTÅL supplies from European mills, saws or cuts to size and ships with 3.1. Typically solution annealed.
Typical applications
- Food and process
- Vessels and tubing
- General stainless machine parts
Delivery conditions
- solution annealed
Designations
- W.Nr.
- 1.4301
- EN standard
- X5CrNi18-10
- DIN
- 1.4301
- AISI/SAE
- 304
- SS (Sweden)
- 2333
- UNS
- S30400
- JIS
- SUS304
- Group
- Stainless steel
Chemical composition
Typical range according to EN 10088-3 (ladle analysis)
| Element | Range |
|---|---|
| C | max. 0.07 % |
| Si | max. 1.00 % |
| Mn | max. 2.00 % |
| P | max. 0.045 % |
| S | max. 0.015 % |
| Cr | 17.5–19.5 % |
| Ni | 8.0–10.5 % |
| N | max. 0.10 % |
1.4301 / X5CrNi18-10. Without Mo. 304L (1.4307) has lower carbon for welding.
Machinability and weldability
Austenite is welded. 304L when intergranular corrosion is a concern.
Sawing and machining
Sawing of bar, cutting of plate to size. Tube to dimension.
Certificates and documentation
EN 10204 3.1 as standard.
Dimension programme
| Form | Range | Note |
|---|---|---|
| Round bar | Ø8–200 mm | Solution-annealed round bar. |
| Flat bar | Cut to order | Stainless flat. |
| Plate | 2–50 mm thickness | Volume in plate and tube. |
| Seamless tube | Ø13.5–Ø508 mm | DN8–DN500. Wall up to 31 mm. Solution annealed. |
| Welded tube | Ø21.3–Ø610 mm | Welded stainless. 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. |
Parts of the range are held by European partners; other dimensions can be sourced. The range is not a current stock status in every diameter — stock is confirmed on enquiry.
Frequently asked questions
- What is 304?
- 304 / 1.4301 is an austenitic stainless steel, X5CrNi18-10. The common 18/8 choice.
- When should I use 316L instead?
- When molybdenum has to be part of the corrosion resistance – chloride, process, a more aggressive environment.
- Do you supply 304 round bar?
- Yes. Bar, plate and tube. State the form and dimension.
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Send your enquiry
State grade, dimensions and quantity — or attach a drawing. We reply with a quote.