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Punit Fasteners, located in Delhi, India, stands out as a top manufacturer and supplier of high-quality stainless steel fasteners, including the renowned Stainless Steel 17-7 PH nuts. They’ve earned a reputation for precision-engineered products that deliver exceptional performance, serving demanding sectors like aerospace, defense, and chemical processing. Their 17-7 PH nuts are particularly prized for their impressive strength, resistance to corrosion, and stability when exposed to heat and pressure. With a strong focus on quality, cutting-edge manufacturing techniques, and prompt delivery, Punit Fasteners has established a solid reputation both in India and around the globe for providing dependable fastening solutions in critical environments.
Stainless Steel 17-7 PH is a precipitation-hardened alloy that contains about 17% chromium and 7% nickel, with aluminum added to boost strength through heat treatment. These nuts boast high mechanical strength, achieving a tensile strength of up to 1310 MPa and a yield strength of around 1170 MPa, depending on the heat treatment process. Elongation typically falls between 6% and 10%, while hardness can reach up to 45 HRC. This material also offers excellent corrosion resistance, outstanding fatigue properties, and minimal distortion during heat treatment, making it perfect for precision applications.
| Property | 17-7 PH |
| Density, lb/in3 | 0.282 |
| Modulus of Elasticity, psi | 29 x 106 |
| Coefficient of Thermal Expansion, 68-212˚F, /˚F | 8.5 x 10-6 |
| Thermal Conductivity, Btu/ft hr ˚F | 9.5 |
| Specific Heat, Btu/lb ˚F | 0.11 |
| Electrical Resistivity, Microohm-in | 31.5 |
| Element | 17-7PH |
| Carbon | 0.09 |
| Chromium | 16.0-18.0 |
| Nickel | 6.5-7.7 |
| Manganese | 1.00 |
| Silicon | 1.00 |
| Aluminum | 0.75-1.50 |
| Phosphorus | 0.040 |
| Sulfur | 0.030 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
You’ll find Stainless Steel 17-7 PH nuts commonly used in high-stress and corrosive settings where strength, fatigue resistance, and dimensional stability are crucial. They’re often found in aerospace components, chemical processing equipment, marine assemblies, nuclear power systems, and high-performance automotive parts. Additionally, these nuts are utilized in military hardware, pressure vessels, and structural assemblies that face temperature changes and dynamic loads. Their remarkable mechanical properties and corrosion resistance make them the go-to choice for fastening in critical systems that demand long-term reliability and low maintenance, even in tough environmental and operational conditions.
We provide complete documentation for our stainless steel 17-7 PH nuts, including commercial invoices, packaging information, fuming certificates, heat treatment protocols, quality assurance programs, and a laboratory include test reports approved by NABL for stainless steel 17-7 PH nuts Our extensive test certificates include MTC as per EN 10204/3.1b, PMI test certificate, 100% radiography test report and human a third party research certificate. Each order is carefully packaged to ensure safe delivery. This complete system is in place to ensure 100% customer satisfaction and highlight the quality and compliance of our Stainless Steel 17-7 PH Nuts.
Punit Fasteners is a leading manufacturer and supplier of high-quality fasteners in Delhi, India, with over 15 years of experience serving global industries.
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