In the heart of Naypyidaw, Kyaw Stainless has built a reputation for reliability and precision, specializing in high-performance metals. We take pride in our role as a trusted manufacturer and supplier of Stainless Steel 17-7 PH Bars, a material chosen for its exceptional strength and resilience. Our commitment is to provide local industries with top-tier products that meet rigorous standards, ensuring your projects are built on a foundation of quality and durability that stands the test of time.
The composition of 17-7 PH stainless steel is a careful balance, primarily chromium and nickel, with a crucial addition of aluminum. This specific mix allows the bars to achieve remarkable mechanical properties through a simple heat treatment. They offer an excellent combination of high tensile strength and good ductility, meaning they are incredibly strong yet resistant to cracking under stress. This makes them a versatile choice for applications where both toughness and a degree of formability are required.
| Grade | C | P | Si | Ni | Cu | Fe | Mn | S | Cr | AL |
| SS 17-7 PH | .09 | .04 | 1.0 max | 6.50 – 7.75 | – | Bal | 1.0 max | 0.04 | 16.0 – 18.0 | .75 – 1.50 |
Properties | Metric | Imperial |
|---|---|---|
Tensile strength | 1170 MPa | 170000 psi |
Yield strength | 965 MPa | 140000 psi |
Modulus of elasticity | 204 GPa | 29600 ksi |
Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
Elongation at break | 6% | 6% |
Hardness, Rockwell C | 38 | 38 |
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Stainless Steel 17-7 PH Bars find extensive applications in aerospace, automotive, and chemical processing industries because of their toughness, corrosion resistance, and high strength. They are best suited for the production of aircraft frames, landing gear parts, and precision springs for the aerospace industry. They are utilized in petrochemical facilities, food industries, and marine uses where they need to have resistance against oxidation and high temperatures. They are also used in medical devices, industrial high-performance equipment, and structural parts, where they provide durability and reliability in harsh environments that demand high stress and fatigue resistance.
High strength and excellent fatigue resistance, ideal for aerospace, automotive, and industrial applications, providing durability and reliability in demanding conditions.
Superior strength and fatigue resistance, suitable for aerospace and industrial components, offering excellent performance under high stress and temperature conditions.
High strength and stability, ideal for aerospace, automotive, and industrial applications, ensuring durability and performance in environments requiring resilience and reliability.
Robust strength and fatigue resistance, used in aerospace and industrial applications where high performance and durability are essential, even under extreme conditions.
Excellent strength and fatigue resistance, perfect for aerospace and industrial uses, ensuring reliable performance and durability in high-stress and temperature environments.
High strength and corrosion resistance, suitable for structural support and critical aerospace components, ensuring durability and performance under challenging conditions.
The unique strength-to-weight ratio of 17-7 PH bars makes them incredibly useful across many demanding fields. You’ll find them essential in aerospace components, such as aircraft fittings and fasteners, where reliability is non-negotiable. They are also widely used in chemical processing equipment, springs for high-temperature environments, and even in certain medical instruments. Any application that requires a material to maintain its integrity under pressure, corrosion, and heat is a perfect fit for the robust nature of these bars.







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