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Yasin Fasteners of Istanbul, Turkey is a credible producer and distributor of stainless steel 440C washers for applications requiring high performance where both wear resistance and hardness are imperative. These washers are produced with high-carbon martensitic stainless steel and appropriate for industries requiring long life, strength, and moderate corrosion resistance. Yasin Fasteners provides 440C washers in different sizes and specifications, customized to precisely suit industries like aerospace, automotive, tooling, and machinery. Every product is produced to international standards, with consistent quality and reliable performance.
Stainless steel 440C washers consist of high concentrations of carbon (approximately 1.0%) and chromium (16–18%), which enable them to be heat-treated to attain high hardness levels—up to 60 HRC. They provide good wear resistance, high strength, and a moderate corrosion resistance in mild environments. Though less corrosion-resistant than austenitic grades 304 or 316, 440C works well in dry or mildly corrosive situations and retains structural integrity when subjected to mechanical stress. These washers are suited for applications that both need precision and toughness in high-friction or high-load situations.
| Element | Content(%) |
|---|---|
| Iron, Fe | 79.15 |
| Chromium, Cr | 17 |
| Carbon, C | 1.1 |
| Manganese, Mn | 1 |
| Silicon, Si | 1 |
| Molybdenum, Mo | 0.75 |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 760-1970 MPa | 110000-286000 psi |
| Yield strength (@ strain 0.200%) | 450-1900 MPa | 65300-276000 psi |
| Bulk modulus | 166 GPa | 24100 ksi |
| Shear modulus | 83.9 GPa | 12200 ksi |
| Elastic modulus | 200 GPa | 29008 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break | 2-14 % | 2-14 % |
| Hardness, Rockwell B (converted from Brinell hardness) | 97 | 97 |
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Stainless steel 440C washers are extensively utilized in applications in which wear resistance and strength are more important than corrosion resistance. They are found in precision instruments, ball bearings, cutting tools, automotive parts, and aerospace assemblies. They assist in mechanical systems by keeping preload and distributing loads while enduring friction and abrasion on prolonged use. These washers are also ideal for high-temperature and high-pressure settings where other materials tend to deform or degrade. Their hardness, toughness, and stability together make 440C washers an ideal selection for heavy-duty and high-precision fastening operations.
At Yasin Fasteners, we maintain an unwavering commitment to the highest standards for our Stainless Steel 440C Washers. This commitment is reflected in our carefully crafted documentation, including commercial invoices, packaging documents, fuming certificates, heat treatment protocols, comprehensive quality control programs We offer a range of test certificates detailed for, including MTCs up to EN 10204/3.1b, PMI test certificates and 100 including % radiography test report Confirmed. Additionally, third-party inspection certifications further confirm our adherence to stringent standards. Each stainless steel 440C washer is carefully packaged in accordance with international guidelines, ensuring safe handling and portability to maintain exceptional product integrity and ensure customer satisfaction.
Yasin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Istanbul, Turkey, with over 8 years of experience serving global industries.
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