High-performance alloy material for industrial engineering and critical application conditions.
Scope of supply of Aviation Group:
Non-standard forgings, round rods, steel plates, rings, seamless pipes
1. 15-7PH material introduction
After heat treatment, the hardness is higher and the corrosion resistance is better. The precipitated hardened steel type with copper added is developed by replacing 2% of chromium in 0Cr17Ni7Al steel with 2%-3% molybdenum. The basic performance is similar to that of 0Cr17Ni7Al steel, but the overall performance is better than that of 0Cr17Ni7Al steel. In the austenite state, it can withstand various cold forming and welding processes, and then heat treatment can obtain the highest strength
2. 15-7PH chemical composition
| alloy | C | Mn | Si | P | S | Cr | Ni | Al | Mo |
| 15-7PH | – | – | – | – | – | 14.0 | 6.50 | 0.75 | 2.0 |
| 0.09 | 1.0 | 1.0 | 0.04 | 0.03 | 16.0 | 7.75 | 1.50 | 3.0 |
3. 15-7PH physical properties
| density | 7.85g/cm³ |
| Melting point | 1415-1450℃ |
| state | Tensile strength MPa | Yield Strength MPa | Elongation after breaking | Section shrinkage rate % | HB | HRC |
| Solid solution | – | – | – | – | ≤269 | ≤26 |
| 565℃ aging | ≥1210 | ≥1100 | ≥7 | ≥25 | ≥375 | ≥42 |
| 510℃ aging | ≥1320 | ≥1210 | ≥6 | ≥20 | ≥388 | ≥44 |
4. 15-7PH application fields
Welding and brazing honeycomb plates, aircraft partitions, and buckles are used to manufacture thin-walled structural parts of aviation, various containers, pipelines, springs, valve membranes, ship axles, compressor plates, reactor components, as well as a variety of chemical equipment and other structural parts.
