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At Rinku Fasteners, we are committed to delivering high-performance fastening solutions engineered for today’s demanding industrial environments. As a trusted manufacturer and supplier in Kolkata, India, we offer premium-quality ASTM A182 F51 Fasteners, known for their exceptional strength and corrosion resistance. Made from duplex stainless steel, these fasteners deliver reliability even in harsh, chloride-rich or high-pressure conditions. With a focus on precision, durability, and customer satisfaction, we ensure every fastener meets stringent global standards. Our dedication to quality helps industries operate with greater efficiency, safety, and confidence in critical applications.
ASTM A182 F51 Fasteners are crafted from duplex stainless steel containing chromium, nickel, molybdenum, and nitrogen. This balanced dual-phase structure provides a combination of high mechanical strength and strong corrosion resistance. They exhibit excellent yield and tensile strength, improved hardness, and good elongation properties. Their resistance to pitting, crevice corrosion, and stress corrosion cracking makes them suitable for aggressive environments. With the ability to maintain stability under heat, pressure, and mechanical stress, these fasteners offer long-term reliability in demanding industrial conditions.
| Element | Content (%) |
|---|---|
| Chromium, Cr | 21 – 23 |
| Nickel, Ni | 4.5 – 6.5 |
| Phosphorous, P | 0.03 Max |
| Carbon, C | 0.03 max |
| Sulfur, S | 0.02 Max |
| Molybdenum, Mo | 2.5 – 3.5 |
| Manganese, Mn | 2.0 Max |
| Silicon, Si | 1 Max |
| Copper, Cu | Balance |
| Nitrogen, N | 0.80 – 0.20 |
| Iron, Fe | Balance |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) | Hardness Rockwell C (HR C) |
|---|---|---|---|---|
| Alloy GR F51 | 105 | 43 | 35 | 255 |
| Grade | ASTM A182 GR.F51 |
| Specifications | ASTM A 182 / ASME SA 182 |
| Dimension | DIN, ASTM, BS and all International Standards |
| Length | 3mm to 200mm |
| Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Types | Bolts, Nuts, Washers, Anchor Fasteners, Stud Bolts, Eye Bolt, Stud, Threaded Rod, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners, Hexagon Castle Nuts, Hexagon Domed Cap Bolts, Hexagon Thin Nuts et |
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.
ASTM A182 F51 Fasteners are widely used in industries that operate under harsh or corrosive conditions. Their duplex structure makes them ideal for offshore platforms, subsea equipment, marine engineering, and desalination plants exposed to saltwater. Oil and gas industries utilize them in pipelines, manifolds, pressure vessels, and heat exchangers due to their strength and corrosion resistance. Chemical processing plants rely on them in systems handling acidic or chloride-containing fluids. They are also used in pulp and paper mills, structural components, wastewater treatment units, and industrial machinery. In all these sectors, they ensure dependable, secure, and long-lasting fastening performance.
Our products such as ASTM A182 F51 Fasteners are meticulously packed to ensure they remain undamaged throughout transportation. For international shipments, standard export packaging involves sturdy wooden boxes or cases, adhering strictly to international packing standards. Each fastener is prominently marked with our trademark (Company’s LOGO), Grade (ASTM A182 F51), Size, and Lot No. Upon customer request, we offer customized product marking. Our packaging includes essential documentation such as Manufacturer Test Certificate as per EN 10204-3.1 or EN 10204-3.2, Raw Materials Certificate, NABL approved Lab Test Report, 100% Radiography Test Report, and Third-Party Inspection Report.
Rinku Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kolkata, India, with over 8 years of experience serving global industries.
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