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Stainless Steel 17/7
Corrosion Resistant Stainless 17/7PH – AMS5528 | AMS5529 | AMS5644 | AMS5568 | AMS5678 | AMS5824 | Mil-S-25043 | QQS766 UNS S17700
Product description
Aerocom Metals carry a full range of sheet and bar in the precipitation hardening 17/7 stainless steel. 17-7 PH contains 17% chromium, 7% nickel and 1% aluminium. It is a precipitation hardening steel capable of reaching very high strength and hardness without any loss of corrosion resistance. Surface scaling and distortion in heat treatment is eliminated by its ability to be treated at very low temperatures. In the annealed condition, it has excellent ductility and machineability. It retains remarkable mechanical and physical properties at temperatures up to 800° F.
SS 17/7 PH is a precipitation hardenable stainless steel that is formable and also capable of meeting high strength requirements. It is utilised in applications that require both high strength and good corrosion resistance. The alloy is classified as semi-austenitic to distinguish the soft phase (austenite) available for ease of forming from the high strength phase (martensite) usually achieved by heat treatment.
The alloy can be formed from the annealed temper but due to a rapid work hardening rate may not be deep drawn without intermediate annealing. It is joined by most arc and resistance methods used for stainless steel. It should not be fusion welded unless shielded by inert gas to prevent oxidation of aluminium.
Strictly speaking, stainless doesn’t rust, but like all materials, there are some environments which are just too corrosive and it will be attacked. When stainless is attacked, the corrosion product looks just like the rust you get on carbon steel.
Technical Specification
| Specification | Material | Publication Date |
|---|---|---|
| AMS5528 | Steel, Corrosion-Resistant, Sheet, Strip, and Plate 17Cr - 7.1Ni - 1.1Al Solution Heat Treated, Precipitation Hardenable | 12/01/1953 |
| AMS5529 | Steel, Corrosion Resistant, Sheet and Strip 17Cr - 7.1Ni - 1.1Al Solution Heat Treated and Cold Rolled, Precipitation Hardenable 0.0015 to 0.100 inch (0.038 to 2.54 mm) Nominal Thickness | 01/05/1954 |
| AMS5678 | Steel, Corrosion Resistant, Wire 17Cr - 7.1NI - 1.1Al Cold Drawn, Precipitation-Hardenable | 01/06/1975 |
| AMS5644 | Steel, Bars and Forgings, Corrosion Resistant 17Cr - 7Ni - 1Al | 01/05/1954 |
| AMS5824 | Steel, Corrosion-Resistant, Welding Wire 17Cr - 7.1Ni - 1.0Al | 01/11/1969 |
| AMS5568 | Steel, Corrosion and Heat Resistant, Welded Tubing 17Cr - 7.1Ni - 1.1Al Solution Heat Treated, Precipitation-Hardenable | 01/05/1954 |
Grade 17-7 PH stainless steel is widely used in the industry due to its attractive combination of properties including very high spring-like strength, good ductility, and excellent corrosion resistance.
Technical Data
| Specification | Tensile Strength | Yield Strength | Elongation |
|---|---|---|---|
| AMS5528 | 150 KSI Max | 65 KSI Max | 20% Min |
| AMS5529 | 200 KSI Max | 175 KSI Max | 1% Min |
| AMS5678 | 280 KSI Max | ||
| AMS5644 | 170 KSI Min | 140 KSI Min | 6% Min |
| AMS5568 | 150 KSI Max | 55 KSI Max | 20% Min |
| Element | Lower % | Upper % |
|---|---|---|
| Carbon | - | 0.090 |
| Manganese | - | 1.000 |
| Silicon | - | 1.000 |
| Phosphorus | - | 0.040 |
| Sulfur | - | 0.030 |
| Chromium | 16.000 | 18.000 |
| Molybdenum | - | - |
| Columbium (Niobium) | - | - |
| Titanium | - | - |
| Aluminium | 0.750 | 1.500 |
| Cobalt | - | - |
| Copper | - | - |
| Nickel | 6.500 | 7.750 |
Aerocom Stock List
| Thickness (Inches) | 60" x 36" |
|---|---|
| 0.020 | X |
| 0.032 | X |
| 0.040 | X |
| 0.050 | X |
| 0.063 | X |
| 0.080 | X |
| 0.100 | X |
| 0.125 | X |
| 0.250 | X |