Weston Stainless, Midland, UK, is one of the prominent distributors of high-grade stainless steel products that serve various industrial requirements with precision-engineered solutions. Stainless Steel 17-7 PH Bars are produced from a chromium-nickel-aluminum alloy and possess very good strength, hardness, and corrosion resistance. These bars are supplied in round, square, hexagonal, and flat forms, making them suitable for aerospace, chemical processing, and marine environments. 17-7 PH grade guarantees excellent mechanical properties such as high fatigue strength and toughness and hence these bars are ideal for high-temperature and high-stress applications where reliability and durability are essential.
Stainless Steel 17-7 PH Bars contain 16-18% Chromium, 6.5-7.75% Nickel, 1-1.5% Aluminum, 1% Manganese, 1% Silicon, 0.09% Carbon, 0.04% Phosphorus, and 0.03% Sulfur. The bars have a tensile strength of up to 1310 MPa, a yield strength of 1035 MPa, and an elongation of 6-10%. The physical properties are a density of 7.8 g/cm³, a melting point of 1400°C, and a thermal conductivity of 16 W/m·K. With high hardness, good corrosion resistance, and excellent fatigue strength, they work very well in harsh environments.
| 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.
Stainless Steel 17-7 PH Bars are shipped with test certificates, such as Mill Test Certificates (MTC) according to EN 10204/3.1, third-party inspection reports, and traceability documents for materials, to confirm adherence to industry standards. The bars are carefully packaged in wood crates and covered with plastic and bubble sheets to ensure safe transit. Delivery is planned through air, sea, or land transport to ensure safe and timely shipment to domestic and overseas customers.
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