Mbemba Stainless is a reputable manufacturer and supplier located in Kinshasa, Congo, known for providing top-notch Stainless Steel 15-5 PH Bars. Crafted from precipitation-hardening martensitic stainless steel, these bars boast an impressive blend of high strength, toughness, and resistance to corrosion. At Mbemba Stainless, they prioritize precision in manufacturing, rigorous quality control, and adherence to international standards. Their SS 15-5 PH bars are perfect for critical applications across various industries, including aerospace, chemical processing, petrochemical, marine, and power generation, where mechanical strength, reliability, and long-lasting performance are crucial.
The composition of Stainless Steel 15-5 PH Bars includes iron, 15–17% chromium, 3–5% nickel, 0.5–0.7% copper, along with trace amounts of manganese, silicon, and carbon. This material can be heat-treated to achieve a tensile strength between 1,100 and 1,300 MPa, showcasing excellent hardness, ductility, and toughness. It also provides good corrosion resistance in mildly corrosive and oxidizing environments, making it ideal for high-stress and high-performance applications.
| Specification : | ASTM A564 / ASME SA564 AMS 5643 |
| Standard : | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Round Bars : | Outside Diameter in the range of 4mm to 500mm |
| Bright Bars : | Outside Diameter in the range of 4mm to 100mm |
| Hex Bars : | 18mm – 57mm (11/16″ to 2-3/4″) |
| Square Bars : | 18mm – 47mm (11/16″ to 1-3/4″) |
| Finish : | Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
| Length : | 1 to 6 Meters, Custom Cut Lengths |
| Form : | Round, Square, Hex (A/F), Rectangle Etc. |
| Grade | C | Cb+Ta | Cr | Cu | Fe | Mn | Ni | P | S | Si |
| SS 15-5 PH | 0.07 max | 0.15-0.45 max | 14.0-15.0 max | 2.5-4.5 max | Bal | 1.0 | 3.5-5.5 | 0.04 | 0.03 | 1.0 |
| Grade | Tensile Strength ksi (MPa) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (Rockwell) MAX |
| SS 15-5 PH | 161,000 | 140,000 | 7.6% | C35 |
| Density | Electrical conductivity (% IACS) | Thermal conductivity (BTU-in/hr-ft²-°F) | Specific heat capacity | Thermal expansion (1/°F) | Melting Point (°F) |
| 0.282 | 1.72 | 97 | 0.11 | 0.00000589 | 2560 |
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At Mbemba Stainless, stainless steel 15-5 PH bars undergo rigorous quality testing including hardness, tensile strength, ultrasonic, and corrosion resistance tests Each product is certified to meet international standards such as ASTM , AMS and ASME. Material Testing Certificates (MTC) and third-party inspection reports ensure the reliability and efficiency of each application.
SS 15-5 PH (Stainless Steel 15-5 PH) is a precipitation-hardening stainless steel alloy known for high strength, corrosion resistance, and excellent fatigue properties. It is commonly used in aerospace, chemical, and petrochemical industries. The bar round form is versatile for manufacturing components requiring strength and durability.
Stainless Steel 15-5 PH Flat Bar is a precipitation-hardening alloy offering high strength, excellent corrosion resistance, and good fatigue properties. It is widely used in aerospace, chemical, and petrochemical industries for applications requiring superior mechanical performance. Its flat bar form is ideal for structural and precision components.
SS 15-5 PH Square Bar is a precipitation-hardening stainless steel known for its high strength, corrosion resistance, and excellent fatigue properties. It is commonly used in aerospace, chemical, and petrochemical industries. The square bar shape is ideal for applications requiring precise dimensions and enhanced mechanical performance in various structural components.
Stainless Steel 15-5 PH Rectangular Bar is a high-strength, corrosion-resistant alloy offering excellent fatigue and mechanical properties. Commonly used in aerospace, chemical, and petrochemical industries, it provides superior performance in harsh environments. The rectangular bar shape is ideal for precise structural applications and components requiring durability and resistance to corrosion.
SS 15-5 PH Hexagonal Bar is a high-strength, corrosion-resistant stainless steel alloy, offering excellent mechanical properties and fatigue resistance. Widely used in aerospace, chemical, and petrochemical industries, the hexagonal bar shape is ideal for applications requiring precise, durable components with enhanced performance and resistance to harsh environments and corrosion.
SS 15-5 PH T-Bar is a high-strength, corrosion-resistant stainless steel alloy known for its excellent fatigue resistance and mechanical properties. Commonly used in aerospace, chemical, and petrochemical industries, the T-bar shape offers structural integrity and versatility for applications requiring precision, durability, and superior performance in challenging environments.
You’ll find Stainless Steel 15-5 PH Bars commonly used in aerospace components, fasteners, springs, structural parts, chemical processing equipment, and marine hardware. They’re also well-suited for power generation machinery, petrochemical setups, and other industrial applications that demand high strength, toughness, and corrosion resistance. With their remarkable mechanical performance, durability, and resistance to corrosion, SS 15-5 PH bars are a go-to choice for challenging engineering and industrial needs.







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