SS 904L
SS 904L (UNS N08904) super-austenitic stockist, importer and exporter in India. Sheet, plate, bar, pipe and fittings for concentrated acid service, exported worldwide.
About SS 904L
SS 904L (UNS N08904) super-austenitic stockist, importer and exporter in India. Sheet, plate, bar, pipe and fittings for concentrated acid service, exported worldwide.
SS 904L is a high-alloy austenitic stainless with 25% Ni, 20% Cr and 4.5% Mo plus copper additions — designed for concentrated sulphuric and phosphoric acid service. Excellent resistance to stress-corrosion cracking.
Steelco Metal & Alloys stocks SS 904L (UNS N08904) in Mumbai, India as a stockist, importer and exporter, and ships to 40+ countries. Every dispatch carries EN 10204 3.1 (3.2 on request) mill test certificates, PMI verification and is open to third-party inspection.
Available forms and size range for SS 904L
Available Forms
- Sheet
- Plate
- Round Bar
- Pipe
- Tube
- Flanges
- Fittings
Size Range
- Sheets 0.3–100 mm
- Coils 0.3–12 mm
- Bars 0.5–300 mm
- Pipes 1/2"–32" NB
Chemical composition of SS 904L (% by weight)
Values are per the governing ASTM / ASME product specification. A single value means a maximum; a range shows the specified minimum and maximum. Balance is iron.
| C | Mn | Si | P | S | Cr | Ni | Mo | Cu |
|---|---|---|---|---|---|---|---|---|
| ≤ 0.020 | ≤ 2.00 | ≤ 1.00 | ≤ 0.045 | ≤ 0.035 | 19.0–23.0 | 23.0–28.0 | 4.00–5.00 | 1.00–2.00 |
| max | max | max | max | max | range | range | range | range |
Mechanical properties of SS 904L (annealed, room temperature)
| Property | Typical Value |
|---|---|
| Tensile Strength (min) | 490 MPa (71 ksi) |
| Yield Strength (0.2%) | 215 MPa (31 ksi) |
| Elongation in 50 mm | 35% min |
| Hardness (Rockwell B) | 90 max |
SS 904L specifications and international equivalents
| Attribute | Details |
|---|---|
| ASTM / ASME | ASTM B625 / B673 · UNS N08904 |
| EN / DIN | 1.4539 (X1NiCrMoCu25-20-5) |
| JIS | SUS890L |
| UNS | UNS N08904 |
| Density | 7.95 g/cm³ |
| Size Range | Sheets 0.3–100 mm · Coils 0.3–12 mm · Bars 0.5–300 mm · Pipes 1/2"–32" NB |
| Certifications | EN 10204 3.1 / 3.2 MTC · PMI · Third-party inspection |
Use our free metal weight calculator — bars, sheets, plates, pipes and sections.
Typical applications for SS 904L
Every dispatch is traceable, tested and certified.
Material is supplied with EN 10204 3.1 (3.2 on request) mill test certificates, PMI and spectro verification, and is open to third-party inspection by TUV, SGS, BV, Lloyd’s and IRS from our Mumbai warehouse.
EN 10204 3.1 / 3.2
Mill test certificate with every consignment.
PMI & Spectro
Positive material identification before dispatch.
Third-party Inspection
TUV · SGS · BV · Lloyd's · IRS welcome.
Export Documentation
Full set prepared for 40+ countries.
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