Hardness testing to ISO 6508-1
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Stainless steel fasteners are essential in many industrial applications, ranging from aerospace to chemical processing to marine and petrochemicals. They are crucial in any project, ensuring various equipment and structures' safe and efficient manufacturing. Among the different grades of stainless steel, 347 and 347H are popular options for fasteners. These materials are perfect for high-temperature applications, such as solid chemicals and extreme pressure.
Stainless steel 347 is an austenitic steel containing chromium, niobium, and nickel. These elements contribute to the material's exceptional strength, durability, and thermal stability, making it ideal for hot and corrosive environments. Stainless steel 347 fasteners come in various types, including bolts, nuts, screws, washers, and springs. Bolts are machine screws threaded into a nut and secured with a washer. Conversely, nuts are internally threaded metal blocks that screw onto a bolt or a stud. Screws have a threaded shaft and a head designed to be driven with a wrench or screwdriver. Washers are thin metal rings designed to distribute the load of a threaded fastener. Springs are coiled wires that apply force when compressed or stretched.
Stainless steel 347H is a modification of 347, containing higher amounts of carbon. This variation provides better high-temperature strength, making it ideal for chemical and petrochemical applications. Stainless steel 347H fasteners are widely used in industries that use harsh chemicals, such as sulfuric acid, hydrochloric acid, and acetic acid. They are also used in high-heat applications like heat exchangers, boilers, and refinery equipment. Their durability and strength make them ideal for high-pressure and tension environments.
Stainless steel 347 and 347H fasteners are used in various applications across various industries. They are commonly used in chemical processing plants, offshore oil and gas platforms, pulp and paper mills, and power generation plants. These fasteners are also ideal for manufacturing aircraft, jet engines, and medical devices due to their high corrosion resistance.
Stainless steel 347 and 347H fasteners provide numerous benefits, making them an ideal option for industrial applications. These materials have excellent corrosion resistance against harsh chemicals and high-temperature environments. They are also durable, with exceptional strength and stability. Plus, they are non-magnetic and maintain their mechanical properties at elevated temperatures.
Stainless steel 347 and 347H fasteners are crucial in manufacturing various industrial equipment and structures. These materials give many benefits, making them ideal for harsh environments, high heat, and corrosive chemicals. Their strength and durability make them perfect for static and dynamic applications.
Specifications | ASTM A193 / ASME SA 193 |
Standard | DIN, ISO ,JIS ,GB, IS, BS, ASTM and all International Standards |
Size | M3 to M90 |
Length | 10mm to 1000mm |
Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
Threads available | UNF, BSW, BSF, METRIC, UNC, or as required |
Threads Configuration | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
Form | Hex, Threading, Square, Round as per Gauge Etc. |
Head | Hex, Square, Round, Hex flange, Flat, T-head & Triangular etc. |
Neck type | Hex, Square, Triangular, Oval & Knurled etc. |
Surface Coating | Black Oxide, Cadmium, Galvanized, Teflon, Xylan, Zinc, Others Upon Request |
Manufacturing Process | Wire Drawing, Cold Heading, Insert tapping, Heat Treatment, Surface Plating, Inspection, Packing. |
Stainless steel 347 and 347H fasteners are widely used in many applications that require high durability, strength, and corrosion resistance. These materials offer a range of advantages that make them ideal for various industries, including construction, food processing, and chemical processing.
To preserve the high standards of our selection of industrial fasteners, we have always adhered to a systematic quality management process.
Our staff of experts is vibrant and talented, and they have always been our largest supporters and contributors to our success. Our vision is to create a world of fasteners.
STANDARD | WERKSTOFF NR. | UNS | JIS | GOST | EN |
SS 347 | 1.4550 | S34700 | SUS 347 | 08Ch18N12B | X6CrNiNb18-10 |
Grade | C | Mn | Si | P | S | Cr | CB | Ni | Fe |
SS 347 | 0.08 max | 2.0 max | 1.0 max | 0.045 max. | 0.030 max | 17.00 - 20.00 | 10xC – 1.10 | 9.00 - 13.00 | 62.74 min |
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Hardness testing to ISO 6508-1
Nut proof load testing to ISO 898-2
Suitability for preloading to EN 14399-2
Calibrated gauges and tools
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