Alloy steel P22.
P22 is a 2¼% chromium, 1% molybdenum alloy steel with higher creep strength than P11.
Quick details
| Material grade | Alloy steel P22 (UNS K21590) |
|---|---|
| Forms | Pipes, Tubes, Sheets & plates, Butt-weld fittings, Flanges |
| Usage / application | Main steam and hot reheat lines, Boiler headers, Hydrocracker and hydrotreater piping |
| 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: Alloy steel P22, 2¼Cr-1Mo, UNS K21590, W.Nr 1.7380, 10CrMo9-10
Product information for purchasing teams
P22 is a 2¼% chromium, 1% molybdenum alloy steel with higher creep strength than P11. It is used for main steam lines, headers and hydrogen service at higher temperatures and pressures.
Exact specification, availability and commercial details are confirmed against your enquiry.
Product forms and standards
| Form | Standard |
|---|---|
| Pipes | ASTM A335 / ASME SA335 P22 |
| Tubes | ASTM A213 T22 |
| Sheets & plates | ASTM A387 Grade 22 Class 2 |
| Butt-weld fittings | ASTM A234 WP22 |
| Flanges | ASTM A182 F22 |
Equivalent grades
| Grade | UNS | Werkstoff Nr. | EN / BS | JIS |
|---|---|---|---|---|
| Alloy steel P22 | K21590 | 1.7380 | 10CrMo9-10 | STPA 24 |
Chemical composition, %
| Grade | C | Mn | Si | P | S | Cr | Mo |
|---|---|---|---|---|---|---|---|
| Alloy steel P22 | 0.05 – 0.15 | 0.30 – 0.60 | ≤ 0.50 | ≤ 0.025 | ≤ 0.025 | 1.90 – 2.60 | 0.87 – 1.13 |
Mechanical properties
| Property | Value |
|---|---|
| Tensile strength | ≥ 415 MPa |
| Yield strength | ≥ 205 MPa |
| Elongation | ≥ 30% longitudinal |
Values per ASTM A335 P22. Confirm against the current edition of the standard and your purchase specification.
Density: 7.85 g/cm³
Applications
- Main steam and hot reheat lines
- Boiler headers
- Hydrocracker and hydrotreater piping
- Pressure vessel nozzles
Questions buyers ask
What are the equivalent grades of Alloy steel P22?
Alloy steel P22 is UNS K21590, Werkstoff 1.7380, EN 10CrMo9-10 and JIS STPA 24.
In which forms is Alloy steel P22 available?
Pipes to ASTM A335 / ASME SA335 P22; Tubes to ASTM A213 T22; Sheets & plates to ASTM A387 Grade 22 Class 2; Butt-weld fittings to ASTM A234 WP22; Flanges to ASTM A182 F22.
What is the density of Alloy steel P22?
About 7.85 g/cm³ (7,850 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.