Stainless Steel Grade 15-5 (UNS S15500) Supplier
Properties and Appearance
Stainless Steel Grade 15-5 is a precipitation hardening, martensitic, chromium-nickel-copper stainless steel. This steel has transverse toughness and ductility, hardness capability, good strength and corrosion resistance. It typically has a metallic silver-grey appearance, like other stainless steels. It has a smooth surface finish, and its physical appearance can vary depending on the manufacturing process and the final treatment applied.
Grade 15-5 exhibits good corrosion resistance to atmospheric environments, fresh water and organic substances. This grade is known for its high strength, achieved through the precipitation-hardening process. It can be heat-treated to obtain a wide range of strength levels depending on the application. It offers good toughness and impact resistance, making it suitable for applications subjected to dynamic loading.
The following datasheet provides an overview of stainless steel-grade 15-5.
Chemical Composition
| Element | Content(%) |
| Iron (Fe) | 75 |
| Chromium (Cr) | 14.8 |
| Nickel (Ni) | 4.5 |
| Copper (Cu) | 3.5 |
| Silicon (Si) | 1 |
| Manganese (Mn) | 1 |
| Nb + Ta | 0.3 |
| Carbon (C) | 0.070 |
| Phosphorous (P) | 0.040 |
| Sulfur (S) | 0.030 |
Physical Properties
| Properties | Metric | Imperial |
| Density | 7.80g/cm³ | 0.282 lb/in³ |
Mechanical Properties
| Properties | Metric | Imperial |
| Tensile Strength | 1380 MPa | 200000 psi |
| Yield Strength (@ strain 0.200%) | 1275 MPa | 184900 psi |
| Elastic Modulus | 196 GPa | 28427 ksi |
| Poisson’s Ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at Break | 10% | 10% |
| Hardness, Brinell | 420 | 420 |
| Hardness, Knoop (converted from Brinell) | 451 | 451 |
| Hardness, Rockwell B (converted from Brinell) | 104 | 104 |
| Hardness, Rockwell C (converted from Brinell) | 44.2 | 44.2 |
| Hardness, Vickers (converted from Brinell) | 445 | 445 |
Thermal Properties
| Properties | Metric | Imperial |
| Thermal Expansion (@-73-21°C/-99.4-69.8°F) | 10.4µm/m°C | 5.78µ/in°F |
| Thermal Conductivity (@150°C/302°F) | 17.8 W/mK | 124 BTU in/hr.ft².°F |
Fabrication and Heat Treatment
Machinability
15-5 steels can be machined in all conditions. To obtain best tool life, machine in H1150M.
Welding
Grade 15-5 steel can be welded by shielded fusion or resistance methods. AWS E/ER630 is the filler metal.
Forming
Stainless steel-grade 15-5 can only be formed mildly. Form while overaged for best results.
Heat Treatment
Stainless steel-grade 15-5 can be heat treated as follows:
- CONDITION A: Soak for 0.5 h at 1038°C (1900°F). Cool in air.
- CONDITION H 900: Soak condition A material for 1 h at 482°C (900°F). Cool in air.
- CONDITION H 925, H 1025, H1075, H 1100, H 1150: Soak Condition A material for 4 h at temperature. Cool in air..
- CONDITION H 1150M: Soak Condition A material for 2 h at 760°C (1400°F). Cool in air. Also heat for 4 h to 621°C (1150°F). Cool in air.
Hot Working
Stainless steel-grade 15-5 can be worked hot with all methods. Anneal afterward for good heat treat response.
Cold Working
Grade 15-5 steel is not suitable for cold working.
Annealing
Stainless steel-grade 15-5 is annealed at 1038°C (1900°F) for 1 h followed by rapid cooling.
Applications
Stainless steel-grade 15-5 is used in fabricated parts in high pressure corrosive environments where its combination of strength and corrosion resistance finds applications in various industries, including:
- Aircraft landing gear
- Aerospace engines
- Valves
- Pumps
- Medical instruments
- Medical implants
- Marine environments
- Boat fittings
Formats supplied:
Vulcan Metal Group supplies Stainless Steel Grade 15-5 bar, sheet, wire, extrusion, pipe, plate and tube.
Custom machined and finished parts supplied to print.
Please contact us for a quote or more on how Vulcan Metal Group can help your business.
Address
Vulcan Metal Group LLC
23888 Madison Street
Torrance, CA 90505
United States
Phone / Fax
Phone: +1 310.882.6841
Fax: +1 310.893.0579
Cage Code
8FCY8
Quality Policy: Vulcan Metal Group, LLC. supplies mission critical, special purpose materials, and products at a competitive price. The company’s quality system is registered to ISO 9001 and AS9100 and follows its principles for the governance of the business. An active continual improvement program and compliance with all applicable OSHA, federal, and state regulations is maintained.