15-5PH
Type 15-5PH stainless steel is one of the widely used precipitation-hardening stainless steel grades. With its refined composition and controlled microstructure, it offers excellent strength, toughness, and corrosion resistance after heat treatment. Grade 15-5PH is commonly applied in industrial, aerospace, and marine manufacturing fields, particularly where high mechanical performance and dimensional stability are required.
| USA | JP | DE | EUR | CN |
|---|---|---|---|---|
| ASTM | JIS | DIN | EN | GB |
| S15500 | SUS 630J1 | X5CrNiCuNb15-5 | 1.4545 | - |
Chemical Composition
The typical chemical composition is shown in the table below.
| Grade | Standard | 15-5PH Chemical Composition | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| C | Si | Mn | Cr | Ni | P | S | Cu | Others | ||
| ≤ % | ≤ % | % | % | % | ≤ % | ≤ % | ≤ % | % | ||
| S15500 | ASTM A240 | 0.07 | 0.5 | 1.0 | 14.00 - 15.50 | 3.50 - 5.50 | 0.04 | 0.03 | 2.50 - 4.50 | Nb+Ta 0.15 - 0.45 |
| 1.4545 | EN 10088-2 | 0.07 | 0.5 | 1.0 | 14.00 - 15.50 | 3.50 - 5.50 | 0.04 | 0.015 | 2.50 - 4.50 | Nb ≥ 0.05 (5×C%) |
| SUS630J1 | JIS G 4304 | JIS G 4305 | 0.07 | 0.5 | 1.0 | 14.00 - 15.50 | 3.50 - 5.50 | 0.04 | 0.03 | 2.50 - 4.50 | Nb 0.15 - 0.45 |
Certification
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