17-4PH
Type 17-4PH stainless steel is one of the widely used precipitation-hardening stainless steel grades. With its unique combination of chromium, nickel, and copper, it offers high strength, excellent corrosion resistance, and good mechanical properties after heat treatment. Grade 17-4PH is commonly applied in industrial, aerospace, and marine manufacturing fields, especially where high strength and moderate corrosion resistance are required.
| USA | JP | DE | EUR | CN |
|---|---|---|---|---|
| ASTM | JIS | DIN | EN | GB |
| S17400 | SUS 630 | X5CrNiCuNb16-4 | 1.4542 | 04Cr17Ni4Cu4Nb |
Chemical Composition
The typical chemical composition is shown in the table below.
| Grade | Standard | 17-4PH Chemical Composition | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| C | Si | Mn | Cr | Ni | P | S | Cu | Others | ||
| ≤ % | ≤ % | % | % | % | ≤ % | ≤ % | ≤ % | % | ||
| S17400 | ASTM A240 | 0.07 | 1.0 | 1.0 | 15.0 - 17.5 | 3.0-5.0 | 0.04 | 0.03 | 3.0 - 5.0 | Nb+Ta 0.15 - 0.45 |
| 1.4542 | EN 10088-2 | 0.07 | 1.0 | 1.5 | 15.0 - 17.0 | 3.0 - 5.0 | 0.04 | 0.015 | 2.50 - 4.50 | Nb ≥ 0.05 (5×C%) |
| SUS630 | JIS G 4304 | JIS G 4305 | 0.07 | 1.0 | 1.0 | 15.00 - 17.50 | 3.00 - 5.00 | 0.04 | 0.03 | 3.00 - 5.00 | Nb 0.15 - 0.45 |
Certification
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