DIN931 933 Bolts

Inconel 625 is an austenitic nickel-based superalloy. High levels of molybdenum and niobium strengthen the chrome-nickel matrix of alloy 625 screws. Inconel 625 Bolts are fasteners made from a nickel-based alloy containing chromium and molybdenum, with additions of aluminum and titanium.

INCONEL 625 is a high nickel superalloy commonly used in the oil and gas, petrochemical, aerospace and gas turbine industries. In addition to high resistance to pitting and crevice corrosion, it has excellent mechanical strength. Inconel 625 fasteners also have a melting point of 1290 to 1350 degrees Celsius. This enables them to operate at high temperatures. High temperature resistance, corrosion resistance and high strength make UNS N06625 Class 2 fasteners useful in power plant, chemical, medical and food processing industrial applications.

The addition of these two elements to Alloy 625 bolts eliminates the need for a precipitation hardening treatment because Inconel 625 nuts have a hardening effect. Inconel 625 fasteners provide high strength properties and high temperature resistance.

Monel K500 fasteners have trusted properties such as strength, hardness and fracture toughness, which are achieved through the addition of aluminum and titanium as well as nickel and copper alloys. Its basic composition is similar to ALLOY400, but alloys are added to allow age hardening under controlled temperature and time conditions.

Hastelloy C22 fasteners are a general-purpose grade composed of chromium, nickel, molybdenum and tungsten alloys. These designs are designed to increase resistance to pitting, stress corrosion cracking (SSC) and crevice corrosion cracking. Alloy C-22 has excellent resistance to a variety of chemical process environments, including strong oxidizing agents such as ferric and cupric chlorides, chlorine, hot fouling solutions (organic and inorganic), formic and acetic acid, acetic anhydride, and seawater and Brine solution. C-22 alloy resists the formation of grain boundary precipitates in the weld heat affected zone and is therefore suitable for most chemical process applications in as-welded conditions.

Monel K500 fasteners are precipitation hardenable nickel and copper based alloy fasteners. These fasteners were developed for excellent corrosion resistance and have high hardness and strength. ALLOYK500 is a nickel-copper alloy that is age-hardened by the addition of aluminum and titanium alloys.

Incoloy 800, 800H and 800HT bolts are nickel-iron-chromium alloys with good strength and excellent resistance to oxidation and carburization at high temperature exposure. Incoloy 800H fasteners and Incoloy 800HT fastener alloys are mainly high in nickel and chromium. Meanwhile, Inconel 800H/800HT? (UNS N08810 & N08811 / W.Nr. 1.4958 & 1.4959) is a solution-strengthened iron-nickel-chromium alloy usually offered as a dual-certified alloy that meets the elemental requirements of both alloys.

Inconel 718 hex bolts are precipitation hardened bolts made from an alloy containing nickel as a base element, chromium and molybdenum, with additions of aluminum, titanium and cobalt. This alloy combines corrosion resistance and high strength with excellent weldability, including resistance to post-weld cracking. Inconel 718 has excellent creep rupture strength at elevated temperatures. Inconel 718 fasteners have been used in gas turbines, rocket engines, spacecraft, nuclear reactors, pumps and tools.

Monel 400 is an alloy of nickel and copper, which means that these components exhibit properties reminiscent of nickel and copper-based alloys. Monel 400 is versatile and can be used for both acid and alkali resistance. Seawater applications are common. One variant is Alloy 405 (UNS N04405). It contains slightly more sulfur, which improves machinability.

Alloy 20 is designed to withstand sulfuric acid. Its nickel, chromium, molybdenum and copper content all provide excellent general corrosion resistance. Alloy 20 fasteners are austenitic stainless steel fasteners made from alloys containing limited carbon content of chromium, nickel, molybdenum, and nitrogen.

926 is an austenitic stainless steel alloy with a chemical composition similar to alloy 904L with 0.2% nitrogen and 6.5% molybdenum. The content of molybdenum and nitrogen significantly increases resistance to pitting and crevice in halide media. At the same time, nickel and nitrogen not only ensure the metallographic strength, but also reduce the separation of the intergranular thermal tendency. Alloy 926 is a super austenitic molybdenum stainless steel with excellent resistance to a variety of highly corrosive environments. They are used in a variety of heavy duty applications including chemical storage and processing, aerospace and food processing.

Hastelloy C276 Bolts and Nuts can be used in harsh and harsh environments including acid, alkaline, brackish and salt water environments. Hastelloy c276 hex bolts are used in acetic and organic acid production plants. The material has excellent acid resistance to strong oxidants. Hastelloy C276 fasteners are fasteners made from an alloy containing nickel as the base element, which contains chromium and molybdenum, with the addition of tungsten.

Hastelloy C276 alloy is a nickel-molybdenum-chromium wrought alloy that is considered a “multifunctional corrosion-resistant alloy”. Hastelloy C276 alloy has excellent corrosion resistance to both oxidizing and reducing media and excellent resistance to localized corrosion attack. The material also contains cobalt, tungsten, iron, silicon, manganese, carbon and vanadium in its composition. Due to this special combination, C276 Hastelloy bolts are also very resistant to pitting and crevice corrosion.

Carbon steel is defined as any steel with a carbon content not exceeding 2.1% by weight. Carbon steel bolts become harder and increase in strength after heat treatment as the carbon content increases. However, the ductility of the steel decreases.

Regardless of the heat treatment applied to the carbon steel alloy, the higher carbon content in the material reduces the weldability of carbon steel fasteners, while also effectively reducing the melting point of the bolt. Most carbon steel studs are generally softer.

They also exhibit low strength. However, mild steel is highly flexible. High ductility is a property that makes the material ideal for machining and welding.

No different elements – used as an alloying agent, not other types of steel, which makes nuts and bolts known as low-cost bolts. Carbon steel nut and bolt grades are divided into three different categories based on the carbon content of mild, medium and high carbon steels.

Hastelloy fasteners such as bolts, screws, nuts and threaded rods are ideal for use in a variety of moderately to severely corrosive acid environments. The most common grade of Hastelloy fasteners is Hastelloy C276 (2.4819), which is one of the most versatile corrosion-resistant nickel alloys, surpassing Inconel or Monel. There are also other special grades of Hastelloy fasteners that can address more niche corrosion problems.

Hastelloy C276 is an extremely versatile material that has been used in a variety of harsh environments. It exhibits corrosion resistance to chloride-containing media, organic acids, oxidizing media, reducing acids, seawater and brine, and sulphur-containing flue gas. Hastelloy C276 replaces Alloy C (UNS N10002), which has slightly lower chromium and molybdenum contents. The high nickel, molybdenum and tungsten contents make them expensive compared to austenitic stainless steels. It is by far the most popular super alloy.

Inconel 601 fasteners are designed to withstand severe corrosion and high temperature exposure. These fasteners contain nickel and chromium alloys for excellent corrosion, heat and oxidation resistance. Nickel content retains ductility and high temperature strength after prolonged use. Fasteners of this grade produce a tightly adherent scale that resists spalling under severe thermal cycling conditions.

Inconel 625 Bolts were developed in the 1960s as a vapor-lined piping material to provide high strength even in extreme high temperatures ranging from freezing low temperatures to 1800¡ãF. Inconel 625 Bolts, also known as Alloy 625, are known for their amazing ability to maintain strength and heat resistance in and out of corrosive environments. The presence of nickel and chromium makes Inconel 625 bolts resistant to corrosion, oxidation and carburization. Molybdenum helps provide excellent fatigue strength and resistance to stress, pitting and crevice corrosion cracking even when exposed to chloride ions.

Inconel 625 bolts can be used in a variety of corrosive environments due to their ability to prevent stress corrosion, crevice corrosion and pitting corrosion. In mild applications such as atmospheric, fresh or salt water, neutral salts and alkaline media are almost completely tolerated. In more severe cases, nickel and chromium content provides resistance to oxidizing chemicals. Inconel 625 bolts are also resistant to non-oxidizing environments.

Inconel 625 Bolts are easy to weld using conventional welding processes, which is especially useful for Inconel 625 Weld Studs. This alloy is often chosen for its weldability compared to other highly alloyed nickel-based alloys. Alloy 625 resists intergranular corrosion even in the as-welded condition. Furthermore, post-weld heat treatment of the weld is not necessary to maintain corrosion resistance.

Alloy 825 bolts have good mechanical properties from low temperatures to moderately high temperatures up to about 1000¡ãF. Microstructural changes that significantly reduce ductility and impact strength occur when used at temperatures above 1000¡ãF.

Alloy 20 is an upgrade to 316 stainless steel. Since iron is its most abundant constituent, it is classified as super-austenite. Even though its nickel content is less than half, the UNS system classifies it as a nickel-based alloy. Alloy 20 is resistant to hot sulfuric acid. It is often found in chemical mixers and fertilizer manufacturing equipment. In general, it is an economical alternative to alloy C276 and other materials with a higher nickel content.

Incoloy Alloy 800 / 800H / 800HT Fasteners (Nuts and Bolts) series for extreme corrosion resistance even in sour environments. Due to the high nickel and chromium content, Incoloy 800 hex head bolts resist oxidation and carburization at high temperatures. The chemical balance allows Incoloy 800H square nuts to exhibit excellent resistance to carburizing, oxidizing and nitriding atmospheres.

Incoloy 800 bolts are best suited for applications that require stable construction and good strength over prolonged exposure to high temperatures. These bolts are used in a variety of industries involving corrosive environments and high temperatures. The Incoloy 800 series of nickel alloys includes Incoloy 800, 800H and 800HT. All of this is the same except for the higher carbon content in the 800H alloy and the addition of about 1.20% aluminum and titanium to the 800HT. Incoloy 800H offers improved stress rupture properties over 800. Incoloy 800HT improves this further to ensure optimum high temperature performance.

Monel 400 Bolt is a nickel-copper alloy, a solid solution nickel alloy that can only be hardened by cold work. Known for its corrosion resistance to reducing media and seawater, Monel 400 is also tougher than copper alloys in oxidizing environments. Monel 400 bolts, also known as Alloy 400, are also used in high temperature, caustic and salt solution applications.

Monel 400 bolts can also be used at higher temperatures. While Monel 400 bolts are typically used at elevated temperatures, they retain their mechanical properties at sub-zero temperatures. The increased hardness at freezing temperatures has been shown to only slightly impair the ductility or impact resistance of Monel 400 bolts. Even when cooled to the temperature of liquid hydrogen, Monel 400 will not undergo the ductile to brittle transition that can lead to fracture. This is especially unique compared to most ferrous materials, which are generally stronger but very brittle at extreme low temperatures.