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Punit Fasteners, a reputable manufacturer and supplier located in Delhi, India, specializes in high-quality Incoloy 800/800H/800HT Washers that are built to perform reliably even in the harshest temperatures and corrosive environments. These washers are crafted from nickel-iron-chromium alloys, which are celebrated for their exceptional resistance to oxidation, carburization, and corrosion, even at soaring temperatures of up to 1100°C. The 800 series—comprising 800, 800H, and 800HT—boasts impressive creep and rupture strength, along with stability during extended thermal exposure. Punit Fasteners takes pride in delivering precision-engineered washers that adhere to global standards, catering to industries like petrochemical, furnace, power generation, heat treatment, and marine sectors, providing reliable fastening solutions for critical applications.
Incoloy 800/800H/800HT Washers consist of about 30-35% nickel, 19-23% chromium, with the remainder being iron, along with trace elements of carbon, aluminum, and titanium. Incoloy 800 is known for its excellent corrosion resistance and stability, while 800H and 800HT, which have controlled carbon levels and higher amounts of aluminum and titanium, offer improved creep strength and outstanding performance at high temperatures. These washers exhibit high tensile and yield strength, remarkable oxidation resistance, and excellent structural stability during thermal cycling. Their unique alloy composition makes them ideal for environments where standard stainless steels struggle under prolonged heat or aggressive chemical exposure.
| Grades |
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| ASTM | ASTM F2281, ASTM F468M, ASTM F468 UNS N08825, ASTM F467 |
| Incoloy Washers Sizes |
Manufacturing M2, M3, M3.5, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20, M22, M24, M27, M30, M33, M36, M42, M45, M48 to M160 and Custom Metric Incoloy Fasteners |
| Alloy 825 Bolts Size Metric |
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| Incoloy Hex Bolts Size Inch |
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| Standard | Manufacturer of Incoloy Washers as per IS, ANSI, ASTM, DIN, ISO, JIS, GB, ASME, BS, UNI, CSN, EU, IFI, PN, and all International Standards
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Grade |
Tensile Strength (MPa) min |
Yield Strength 0.2% Proof (MPa) min |
Elongation (% in 50mm) min |
Hardness |
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Rockwell B (HR B) max |
Brinell (HB) max |
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Incoloy Fasteners |
Psi – 75,000 , MPa – 520 |
Psi – 30,000 , MPa –205 |
30 |
– |
– |
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Grade |
C |
Mn |
Si |
Fe |
S |
Cr |
Al-Ti |
Ni |
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Incoloy Fasteners |
min. |
– |
– |
– |
39.5 |
– |
19.0 |
0.15 |
30.0 |
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.
Incoloy 800/800H/800HT washers are used in hot and corrosive environments, such as chemical plants, heat exchange plants, electrical systems and are ideal for applications involving high temperatures and aggressive materials, a including gas turbines and furnaces. Their resistance to oxidation and carburization makes them suitable in very fine industrial conditions. In addition, these washers are used in nuclear reactors and petrochemical plants where durability and operation under temperature and pressure are required
Incoloy 800/800H/800HT Washers find extensive use in industries that require components to endure extreme temperatures, corrosive substances, and mechanical stress. They are commonly found in petrochemical processing units, furnace hardware, heat exchangers, and industrial boilers. Power generation facilities rely on these washers in superheaters, reheaters, and gas turbines due to their thermal stability. Additionally, they are utilized in chemical plants and marine systems where chloride and acidic conditions are prevalent. These washers offer a long-lasting, low-maintenance solution for demanding applications.
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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