Home > Stainless Steel 309/309S Washer
Request For Our Latest Prices on Stainless Steel 309/309S Washer in Kinshasa, Congo!
MUKAU FASTENERS, a top-notch manufacturer and supplier located in Kinshasa, Congo, specializes in high-quality Stainless Steel 309/309S Washers designed for extreme temperatures and corrosive settings. Crafted from austenitic stainless steel rich in chromium and nickel, these washers boast impressive oxidation resistance and durability. The 309S grade, with its lower carbon content, enhances weldability and reduces carbide precipitation. MUKAU FASTENERS is committed to precision manufacturing and adheres to international standards, providing 309/309S Washers that deliver reliable performance, enduring strength, and secure fastening support in demanding environments like furnaces, heat exchangers, power plants, and the petrochemical sector.
Stainless Steel 309/309S Washers are made up of about 23–25% chromium, 12–15% nickel, and a maximum carbon content of 0.08%, with the 309S variant featuring lower carbon for better weldability. These washers demonstrate a tensile strength of roughly 515 MPa and a yield strength close to 205 MPa, along with excellent ductility and toughness. They maintain their mechanical stability, oxidation resistance, and corrosion resistance even at high temperatures. The high chromium-nickel composition guarantees long-lasting performance in scaling and oxidizing environments, making these washers perfect for demanding industrial and high-temperature applications.
Element | Content (%) |
Iron, Fe | 60 |
Chromium, Cr | 23 |
Nickel, Ni | 14 |
Manganese, Mn | 2 |
Silicon, Si | 1 |
Carbon, C | 0.20 |
Phosphorous, P | 0.045 |
Sulfur, S | 0.030 |
Properties | Metric | Imperial |
Tensile strength | 620 MPa | 89900 psi |
Yield strength (@ strain 0.200%) | 310 MPa | 45000 psi |
Izod impact | 120 – 165 J | 88.5 – 122 ft-lb |
Shear modulus (typical for steel) | 77 GPa | 11200 ksi |
Elastic modulus | 200 GPa | 29008 ksi |
Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
Elongation at break (in 50 mm) | 45% | 45% |
Hardness, Brinell | 147 | 147 |
Hardness, Rockwell B | 85 | 85 |
Hardness, Vickers (converted from Rockwell B hardness) | 169 | 169 |
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.
Stainless Steel 309/309S Washers are commonly found in furnaces, heat treatment equipment, boilers, power generation facilities, and the petrochemical industry, thanks to their outstanding resistance to high temperatures and corrosion. They excel at load distribution, wear prevention, and ensuring secure fastening in machinery, piping systems, and structural assemblies that face heat and stress. The 309S grade is particularly well-suited for welded assemblies and applications that require formability. These washers are also utilized in chemical processing, showcasing their versatility and reliability in various industrial settings.
At Mukau Fasteners, our commitment to quality is evident in the rigorous testing of all Stainless Steel 309/309S washers before shipment. We conduct advanced testing, including hardness, chemical analysis by Spectro analysis, good material identification (PMI), levelling, micro-macro, pitting resistance and intergranular corrosion (IGC) testing. In addition, we offer third-party inspection certificates to confirm that our washers meet the highest standards of quality and reliability, ensuring exceptional performance in harsh environments.
Mukau Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kinshasa, Congo, with over 8 years of experience serving global industries.
©2024 Mukau Fasteners All Rights Reserved.
