Categories
- Round bars
- Stainless steel round bars 1.4028 / 3H13
- Stainless steel round bars 1.4122
- Stainless steel round bars 1.4034 / 420C
- Stainless steel round bars 1.4057 / 431
- Stainless steel round bars 1.4301 / 304
- Stainless steel round bars 1.4305 / 303
- Stainless steel round bars 1.4404 / 316L
- Stainless steel round bars duplex steel 1.4462 / S31803
- Stainless steel round bars 1.4541 / 321
- Stainless steel round bars 1.4571 / 316Ti
- Stainless steel round bars from heat-resistant steel
- Stainless steel round bars 1.4005 / 416
- Stainless steel round bars 1.4006 / 410
- Stainless steel round bars 1.4021 / 420A
- Seamless tubes and hollow bars
- Fittings
- Sheets
Item length
Diameter
Steel grade
Availability
Stainless steel cold-drawn round bar Diameter 12 mm in grade 1.4305 / 303 100cm
- Length: 100 cm
- Outside diameter (OD): 12 mm
- Steel grade: 1.4305 / 303
Availability:
available
Dispatched within: 3 days
Stainless steel cold-drawn round bar Diameter 25 mm in grade 1.4305 / 303 100cm
- Length: 100 cm
- Outside diameter (OD): 25 mm
- Steel grade: 1.4305 / 303
Availability:
available
Dispatched within: 3 days
Stainless steel cold-drawn round bar Diameter 10,5 mm in grade 1.4305 / 303 250cm
- Length: 250 cm
- Outside diameter (OD): 10.5 mm
- Steel grade: 1.4305 / 303
Availability:
available
Dispatched within: 3 days
Stainless steel cold-drawn round bar Diameter 12 mm in grade 1.4305 / 303 10cm
- Length: 10 cm
- Outside diameter (OD): 12 mm
- Steel grade: 1.4305 / 303
Availability:
available
Dispatched within: 3 days
Stainless steel cold-drawn round bar Diameter 12 mm in grade 1.4305 / 303 110cm
- Length: 110 cm
- Outside diameter (OD): 12 mm
- Steel grade: 1.4305 / 303
Availability:
available
Dispatched within: 3 days
Stainless steel cold-drawn round bar Diameter 12 mm in grade 1.4305 / 303 120cm
- Length: 120 cm
- Outside diameter (OD): 12 mm
- Steel grade: 1.4305 / 303
Availability:
available
Dispatched within: 3 days
Stainless steel cold-drawn round bar Diameter 12 mm in grade 1.4305 / 303 130cm
- Length: 130 cm
- Outside diameter (OD): 12 mm
- Steel grade: 1.4305 / 303
Availability:
available
Dispatched within: 3 days
Stainless steel cold-drawn round bar Diameter 12 mm in grade 1.4305 / 303 140cm
- Length: 140 cm
- Outside diameter (OD): 12 mm
- Steel grade: 1.4305 / 303
Availability:
available
Dispatched within: 3 days
Stainless steel cold-drawn round bar Diameter 12 mm in grade 1.4305 / 303 150cm
- Length: 150 cm
- Outside diameter (OD): 12 mm
- Steel grade: 1.4305 / 303
Availability:
available
Dispatched within: 3 days
Stainless steel cold-drawn round bar Diameter 12 mm in grade 1.4305 / 303 160cm
- Length: 160 cm
- Outside diameter (OD): 12 mm
- Steel grade: 1.4305 / 303
Availability:
available
Dispatched within: 3 days
Stainless steel cold-drawn round bar Diameter 12 mm in grade 1.4305 / 303 170cm
- Length: 170 cm
- Outside diameter (OD): 12 mm
- Steel grade: 1.4305 / 303
Availability:
available
Dispatched within: 3 days
Stainless steel cold-drawn round bar Diameter 12 mm in grade 1.4305 / 303 180cm
- Length: 180 cm
- Outside diameter (OD): 12 mm
- Steel grade: 1.4305 / 303
Availability:
available
Dispatched within: 3 days
Stainless steel round bars 1.4305 / 303
What is stainless steel 1.4305 / 303?
Stainless steel round bars 1.4305 / 303 are solid, cylindrical bar stock made from an austenitic, free‑machining stainless steel commonly identified as AISI 303 (EN/PN 1.4305, DIN X8CrNiS18‑9). This grade contains added sulphur to improve machinability, which makes it easier and faster to turn, drill and mill compared with standard 304 (1.4301) stainless steels.
Key properties
- Machinability: Excellent — the extra sulphur improves chip formation and tool life when producing turned or machined parts.
- Corrosion resistance: Moderate — generally lower than 1.4301 (304). Suitable for many indoor and mildly corrosive environments but not recommended for heavily corrosive or chloride‑rich (marine/offshore) applications.
- Weldability: Reduced — 303 is less suited to welding than 304; welded joints can show degraded corrosion performance. For welded assemblies consider 304/304L or 316 where appropriate.
- Mechanical behaviour: Typical of austenitic steels — good ductility and toughness. Non‑magnetic in the annealed condition, though some magnetism can appear after cold working.
Typical uses and industries
Stainless steel round bars 1.4305 / 303 are selected where high machinability and good general corrosion resistance are required. Common applications include:
- Turned and machined components: shafts, bolts, screws, pins, fittings and fasteners.
- Automotive and transport parts where precision turning is needed.
- Mechanical engineering and machine building for moving parts and assemblies.
- Electronics and instrumentation components that require accurate machining.
- Small‑scale and workshop projects or prototyping where ease of machining reduces production time and cost.
Note: For highly corrosive sectors such as marine, offshore, or aggressive chemical environments, consider higher‑alloyed grades (for example 316) rather than 303.
Material designations
- European / EN: 1.4305
- DIN: X8CrNiS18‑9
- American / AISI: 303
- Polish / PN: 1.4305
In everyday language you will hear this material called stainless steel 303, austenitic stainless, or free‑machining stainless.
Forms, finishes and availability
These products are supplied as round bars (bar stock) ready for turning and machining. They are commonly available in a range of diameters and lengths and can be supplied with turned or bright bar finishes depending on your machining requirements. We can also provide cut‑to‑length service or pre‑machining on request (check availability with your supplier).
How to choose 1.4305 / 303 round bars
- If your priority is fast, cost‑effective machining and the final part will operate in a non‑severe environment, 1.4305 / 303 is a strong candidate.
- If the part will be welded or exposed to saltwater, acids, or highly corrosive conditions, consider 304/304L or 316 instead.
- For food contact or hygienic environments that demand higher corrosion resistance and easy cleaning, verify regulatory requirements — in many cases 304 or 316 are preferred.
- Ask for technical support when selecting diameter, tolerance and surface finish to match machining and end‑use requirements.
If you need assistance choosing between grades (1.4305 / 303, 1.4301 / 304, 1.4401 / 316) or want custom cut‑to‑length stainless steel round bars, contact our sales team with details of the intended application and any special requirements.