SS 304L.
SS 304L is the low-carbon version of 304.
Quick details
| Material grade | SS 304L (UNS S30403) |
|---|---|
| Forms | Pipes, Tubes, Sheets & plates, Round bars, Butt-weld fittings, Flanges |
| Usage / application | Welded tanks and vessels, Pharmaceutical and food process piping, Cryogenic equipment |
| Test certificate | EN 10204 3.1 mill test certificate; 3.2 on request |
| Business type | Stockist and supplier |
| Location | Kumbharwada, Mumbai 400004, Maharashtra |
Also searched as: SS 304L, stainless steel 304L, 304L, UNS S30403, W.Nr 1.4307, X2CrNi18-9
Product information for purchasing teams
SS 304L is the low-carbon version of 304. Keeping carbon at or below 0.030% prevents chromium carbides forming at weld zones, so heavy welded sections keep their corrosion resistance without post-weld annealing. Most mills now certify plate and pipe as dual 304/304L.
Exact specification, availability and commercial details are confirmed against your enquiry.
Product forms and standards
| Form | Standard |
|---|---|
| Pipes | ASTM A312 / ASME SA312 TP304L |
| Tubes | ASTM A213 / A269 TP304L |
| Sheets & plates | ASTM A240 / ASME SA240 Type 304L |
| Round bars | ASTM A276 / A479 Type 304L |
| Butt-weld fittings | ASTM A403 WP304L |
| Flanges | ASTM A182 F304L |
Equivalent grades
| Grade | UNS | Werkstoff Nr. | EN / BS | JIS |
|---|---|---|---|---|
| SS 304L | S30403 | 1.4307 | X2CrNi18-9 | SUS 304L |
Chemical composition, %
| Grade | C | Mn | Si | P | S | Cr | Ni | N |
|---|---|---|---|---|---|---|---|---|
| SS 304L | ≤ 0.030 | ≤ 2.00 | ≤ 0.75 | ≤ 0.045 | ≤ 0.030 | 17.5 – 19.5 | 8.0 – 12.0 | ≤ 0.10 |
Mechanical properties
| Property | Value |
|---|---|
| Tensile strength | ≥ 485 MPa |
| Yield strength (0.2%) | ≥ 170 MPa |
| Elongation | ≥ 40% |
| Hardness | ≤ 201 HB |
Values per ASTM A240, annealed. Confirm against the current edition of the standard and your purchase specification.
Density: 7.93 g/cm³
Applications
- Welded tanks and vessels
- Pharmaceutical and food process piping
- Cryogenic equipment
- Heat exchangers in mild service
Questions buyers ask
What is the difference between 304 and 304L?
304L has a maximum carbon of 0.030% against 0.07% for 304. That makes it safer to weld in thick sections, at the cost of slightly lower minimum strength. Dual-certified 304/304L meets both.
What are the equivalent grades of SS 304L?
SS 304L is UNS S30403, Werkstoff 1.4307, EN X2CrNi18-9 and JIS SUS 304L.
In which forms is SS 304L available?
Pipes to ASTM A312 / ASME SA312 TP304L; Tubes to ASTM A213 / A269 TP304L; Sheets & plates to ASTM A240 / ASME SA240 Type 304L; Round bars to ASTM A276 / A479 Type 304L; Butt-weld fittings to ASTM A403 WP304L; Flanges to ASTM A182 F304L.
What is the density of SS 304L?
About 7.93 g/cm³ (7,930 kg/m³).
Where is Steel Impex India located?
Steel Impex India is at 231/235, Sant Sena Maharaja Marg, 2nd Kumbharwada, Mumbai 400004, and supplies across India.