15-5 PH Stainless Steel
At a Glance
| Property | Details |
|---|---|
| Available Forms | Round Bar, Rod, Flat Bar, Plate, Sheet/Strip, Wire |
| Alloy Type | Martensitic Precipitation-Hardening Stainless Steel |
| Corrosion Resistance | Excellent corrosion resistance, superior to many conventional stainless steels |
| Hardness | Heat treatable to high strength and hardness levels while maintaining toughness |
| Durability | Outstanding combination of strength, toughness, and fatigue resistance |
| Machinability & Weldability | Readily machined and highly weldable |
| Key Advantages | High strength, excellent corrosion resistance, good toughness, and reliable heat-treatment response |
| Common Applications | Aerospace structural components, gears, shafts, valves, engine parts, and nuclear reactor components |
| Specifications | AMS 5659, AMS 2300, ASTM A564, AMS 5862, UNS S15500 |
15-5 PH is a martensitic precipitation hardened stainless steel favored by the aerospace industry. Its roles in this industry include:
- Structural components
- Gears, shafts, and valves
- Engine parts
- Nuclear reactor components
15-5 PH stainless steel consists of 15% chromium, 5% nickel, and has excellent corrosion resistance. It was specifically designed to be stronger than 17-4 steel, its predecessor, and can be further reinforced by undergoing heat treatment. In addition to being used in aerospace, it is also utilized in chemical, paper, and food processing industries.
15-5 PH is very weldable and can be readily machined to meet required shapes and conditions.
Chemical Data, Mechanical Properties and Specifications for 15-5 PH Stainless Steel
Chemical Range
| Element | Minimum | Maximum |
|---|---|---|
| Carbon | -- | 0.07 |
| Chromium | 14 | 15.5 |
| Copper | 2.5 | 4.5 |
| Iron | Balance | -- |
| Manganese | -- | 1 |
| Nickel | 3.5 | 5.5 |
| Niobium | 0.15 | 0.45 |
| Phosphorus | -- | 0.04 |
| Silicon | -- | 1 |
| Sulphur | -- | 0.03 |
Typical Mechanical Properties
| Temper | Tensile Strength | Yield Strength | Elongation at Break |
|---|---|---|---|
| H900 | 200 ksi | 185 ksi | 10.0% |
| H1050 | 170 ksi | 165 ksi | 12.0% |
| H1150 | 145 ksi | 125 ksi | 15.0% |
Specifications
- AMS 5659, Type 1 (Vac Melt Bar)
- AMS 5659, Type 2 (ESR Bar)
- AMS 2300 (Bar)
- ASTM A564 (Bar)
- Type XM-12 (Bar)
- AMS 5862 (Sheet)
- UNS S15500