304L Stainless Steel Plate Manufacturer & Supplier
304L is the low-carbon version of 304. Capping carbon at 0.030% suppresses chromium carbide precipitation at the grain boundaries, so welded joints resist intergranular corrosion without post-weld heat treatment. Specify 304L — not 304 — for anything welded and left as-welded.
UNS: S30403 | Category: Austenitic Stainless Steel
Size Range
Outer Diameter: Thickness 1.5 - 100 mm · Width 1000-3000 mm · Length 2000-12000 mm
Wall Thickness: 1.5 - 100 mm
Chemical Composition (%)
| C | Si | Mn | P | S | Cr | Ni | N |
|---|---|---|---|---|---|---|---|
| 0.030 max | 1.00 max | 2.00 max | 0.045 max | 0.030 max | 17.50-19.50 | 8.00-12.00 | 0.11 max |
Mechanical Properties
- Yield Strength Rp0.2
- 200 MPa min
- Tensile Strength Rm
- 485-680 MPa
- Elongation A5
- 45% min
- Hardness
- 215 HB max
- Density
- 7.90 g/cm³
- Max Service Temperature
- 425 °C (continuous, pressure parts)
Applicable Standards
- ASTM A240 / ASME SA240 (plate, sheet, strip)
- ASTM A480 (general requirements)
- EN 10088-2 (corrosion resisting sheet & plate)
- EN 10028-7 (pressure purposes)
- JIS G4304 / G4305
- EN 10204 3.1 certification
Applications
- Pressure vessels & reactors
- Storage tanks
- Heat exchanger tubesheets
- Chemical process equipment
- Piping spools & fabricated spares
- Laser & plasma cut components
- Welded tanks & silos
- Pharmaceutical process vessels
Industries Served
- Chemical & Petrochemical
- Oil & Gas
- Power & Energy
- Pharmaceutical
- Food & Beverage
- Water & Desalination
Equivalent Grades
- EN
- 1.4307 / X2CrNi18-9
- JIS
- SUS 304L
- DIN
- X2CrNi19-11
- GB
- 022Cr19Ni10