CPI (incl. LNG, Urea)

BÖHLER A220 is a low carbon, chromium-nickel-and molybdenum steel. Structure homogeneous, stable austenite. Weldable with analogous filler metal giving fully austenitic deposit. Resistant to intergranular corrosion in the temperature range up to 400°C. Does not require post-weld heat treatment. Resistance to acids having a reducing effect, like diluted sulphuric acid and hydrochloric acid is good. The steel is not susceptible to pitting, crevice and stress corrosion cracking in media containing chloride ions and possesses excellent resistance to the attack of urea. For optimum resistance, surfaces should be pickled. Cold forming properties are good. The steel is capable of taking a mirror finish. Components for urea plants, pump heads, valve stems, condensers, reactors, strippers, scrubbers. Equipment and parts in the dyeing industry, textile, paper and leather, chemical, pharmaceutical and synthetic fibre industries.

BÖHLER A405 is a stainless austenitic Cr-Ni-Mo steel with nitrogen content and extremely low carbon content. Resistant to intergranular corrosion up to 400°C. Heat treatment after welding is not required. Required surface finish: pickled. Very good cold formability. Very good polishability. The chemical composition has been optimised for specific use in urea systems. It is a modified austenitic stainless steel 310L with low carbon and silicon content and nitrogen addition to stabilise and strengthen the austenitic phase. The alloy has been specially developed for improved corrosion resistance properties in urea carbonate environments. The grade is also suitable for wet corrosive environments due to its high chromium, molybdenum and nitrogen content (PREN > 33). For components with the highest resistance requirements to boiling, concentrated nitric acid and solutions with a high chloride content at high temperatures, as well as for highly stressed systems in the urea industry, e.g. urea separators or complementary products (pipes, fittings, etc.).

BÖHLER A903 (UNS S32205) is the most common stainless ferritic-austenitic Cr-Ni-Mo steel with nitrogen addition. In addition to good strength properties, this steel offers high corrosion resistance, especially against stress corrosion cracking in chloride-containing solutions, and is resistant to intergranular corrosion up to 300°C. The alloy should not be used at temperatures above 300°C due to embrittlement. Heat treatment after welding is not necessary. Required surface finish: pickled, scale-free heat treated or machined. Commonly used in the oil and gas industry, hydroelectric power, pressure vessels, pulp and paper industry, components and chemical tanks, such as parts for separators and heat exchangers and parts in the paper industry, oil and gas extraction , compressors, seawater desalination.

BÖHLER A911SA is a ferritic-austenitic stainless steel of Type 25%Cr with PREN of min. 40. It offers excellent corrosion resistance against general corrosion, stress corrosion cracking, corrosion fatigue, pitting, crevice and erosion corrosion and possessing very high mechanical strength properties. However, it contains less copper compared to other super Duplex SS but a deliberate addition of tungsten instead, claimed to selectively improve corrosion resistance. Good weldability, post weld heat treatment not necessary. Max. temperature for long periods of service: 280°C (535°F ) / (300°C/570°F possible for short periods). Surface condition for optimum corrosion resistance: pickled or machined. Components in offshore, waste water, sea water desalination and chemical plants with aggressive chloride-containing media e.g. heat exchangers, separator parts, compressor and pump components, turbine blades.

Bohler A913 (UNS S32750) is the most widely used super duplex grade on the market and is a 25%Cr ferritic-austenitic stainless steel with PREN min 41. The steel offers highest corrosion resistance and good strength properties and is especially suitable for use in aggressive environments containing chlorides. Good weldability, heat treatment after welding is not required. Excellent resistance to general corrosion, stress corrosion cracking, vibration cracking, pitting and crevice corrosion as well as erosion corrosion. Max. operating temperature for long-term use: 280°C (short-term exceeding up to 300°C permissible). Required surface finish: pickled or machined. Components exposed to seawater such as heat exchangers, feed or injection pumps, propeller shafts, highly stressed parts in chemical and waste water plants and for oil and gas production (e.g. manifolds), separators, turbine and fan blades, low-pressure compressor components.

BÖHLER A930 is a stainless ferritic-austenitic steel of the 25%Cr type. Highest corrosion resistance and good strength properties. Good weldability, heat treatment after welding is not required. Excellent resistance to general corrosion, stress corrosion cracking, vibration cracking, pitting and crevice corrosion as well as erosion corrosion. Max. operating temperature for long-term use: 280°C (short-term exceeding up to 300°C permissible). Required surface finish:pickled or machined. BÖHLER A930 (UNS S32550, 1.4507, F61) is the original super duplex stainless steel. As such, it was the first alloy to be called “super duplex” and is based on a chromium content of 25 %. Compared to the later alternatives UNS S32750 and UNS S 32760, it is the only grade with an increased copper content for better pitting corrosion resistance. Components in offshore, waste water, seawater desalination and chemical plants with aggressive chloride-containing media, e.g. heat exchangers, separator parts, compressor and pump components, turbine blades.

BÖHLER A959 (Alloy 28, UNS N08028, W. Nr. 1.4563) is a nickel-iron-chromium alloy with additions of molybdenum and copper. It has excellent resistance to both reducing and oxidizing acids, to stress-corrosion cracking, and to localized attack such as pitting and crevice corrosion. The alloy is especially resistant to sulphuric and phosphoric acid. Equipment used for chemical processing, pollution control equipment, oil and gas well piping ,natural gas and oil transportation, nuclear fuel reprocessing and transportation, acid production and pickling equipment and transportation The alloy was originally developed for use in the manufacture of phosphoric acid, especially for heat exchangers in the concentration unit, where corrosive conditions are at their worst.

BÖHLER A962RC (Alloy 904L, UNS N08904) is a super-austenitic stainless steel designed for a medium to high level of corrosion resistance. The alloy contains high levels of chromium and nickel with additions of molybdenum and copper to provide higher corrosion resistance in certain media. The alloy is produced to low carbon levels for use in the welded condition as in welded vessels and other large and complex fabrications. No post-weld heat treatment required. The high nickel (25%) and molybdenum (4.5%) contents of BÖHLER A962RC provide good resistance to chloride stress corrosion cracking. The Chromium, molybdenum and nickel levels provide general corrosion restistance and restistance to chloride pitting corrosion above the level of Types 316 and 317 in many media. The copper addition provides added resistance to reducing media such as hot phosphoric acid and dilute sulfuric acid.

BÖHLER A965SA is an austenitic stainless steel alloy with 6% molybdenum and nitrogen. It has very high resistance to crevice and surface corrosion and was specially developed for the requirements of the chemical industry, the pulp and paper industry and the oil/gas industry. Due to its PREN value of over 40, the material is particularly resistant to seawater and is therefore often used in offshore technology. Furthermore, BÖHLER A965SA is resistant to intergranular corrosion up to 400°C. The required surface finish is pickled, scale-free heat treated or machined. For applications in highly corrosive environments due to chemically aggressive media, e.g. for equipment and installations cooled with seawater and parts for offshore installations. In the chemical industry, where resistance to attack by pure acids as well as chloride ion-containing acids (especially sulphuric acid), organic acids and mixed acids in the higher pressure and temperature range is required. The increased resistance to crevice corrosion also allows the use where incrustations must be expected and / or where the formation of crevices cannot be avoided by constructive measures.

Böhler A970 is a stainless austenitic CrNiMoCu steel with excellent resistance to pitting, crevice and stress corrosion cracking. It is also resistant to intergranular corrosion up to 400°C. Required surface finish pickled, scale-free heat treated or machined. For components subjected to highly corrosive conditions, e.g. in seawater-cooled plants and in offshore applications. In areas of the chemical industry where, at higher pressures and temperatures, there is exposure to pure acids as well as acids containing chlorine ions (especially sulphuric acid), organic acids and acid mixtures. Due to the increased resistance to crevice corrosion, it can also be used wherever the formation of deposits is to be expected or where crevices cannot be prevented by constructive measures.

BÖHLER L004 belongs to the group of highly corrosion-resistant nickel-chromium-molybdenum alloys with very low carbon, iron and silicon content and has good corrosion resistance, even at elevated temperatures. The combination of chromium with a high molybdenum content gives BÖHLER L004 exceptional resistance to a wide range of chemical media: e.g. contaminated, reducing mineral acids and good resistance under reducing and oxidizing conditions, e.g. hot, contaminated media such as sulphuric acid, nitric acid, dry chlorine, formic acid, acetic acid, solvents, chlorine and chloride-containing media. BÖHLER L004 exhibits a significantly reduced tendency to form precipitates in the temperature range between 650 and 1,040 °C due to the alloy composition. This improves resistance to intergranular corrosion. Due to the high nickel content, the material is practically insensitive to chloride-induced stress corrosion cracking even in hot chloride solutions. Due to its excellent thermal stability, the alloy can be welded without any problems and is generally used in the welded condition. Suitable for pressure vessels with wall temperatures from-196°C to 400°C.

BÖHLER L022 belongs to the group of highly corrosion-resistant nickel-chromium-molybdenum-tungsten alloys with extremely low carbon and silicon contents. Good resistance to wet media, e.g. sulphuric acid, nitric acid, acid mixtures of sulphuric acid and oxidising acids with chloride ions. Recommended for use in the presence of strong oxidising agents such as iron(III) and copper(II) chlorides, chlorine gas, formic acid, acetic acid, seawater and other salt solutions. High resistance to crevice, pitting and stress corrosion cracking at elevated temperatures under oxidising and reducing conditions. Used in environmental engineering, e.g. in agitators, heat exchangers and spray systems in flue gas cleaning plants and in waste water treatment plants, evaporation plants in chemical process engineering, in chlorine bleaching plants and plants for the production of chlorine gas and hydrogen chloride, e.g. butterfly valves, gate valves, pipelines and centrifuges. Suitable for pressurised containers with wall temperatures from-196°C to 400°C. Due to its good thermal stability, BÖHLER L022 can generally be used in the welded condition without subsequent heat treatment.

BÖHLER L276 is a nickel-chromium-molybdenum alloy with universal corrosion resistance unmatched by any other alloy. It has outstanding resistance to a wide variety of chemical process environments including ferric and cupric chlorides, hot contaminated mineral acids, solvents, chlorine and chlorine contaminated (both organic and inorganic), dry chlorine, formic and acetic acids, acetic anhydride, sea water and brine solutions and hypochlorite and chlorine dioxide solutions. BÖHLER L276 also resists formation of grain boundary precipitates in the weld heat affected zone making it useful for most chemical processes in the as-welded condition. BÖHLER L276 has excellent resistance to pitting and stress corrosion cracking. Some typical applications of BÖHLER L276 include equipment components in chemical and petrochemical organic chloride processes and processes utilizing halide or acid catalysts. Other industry applications are pulp and paper (digesters and bleach areas), scrubbers and ducting for flue gas desulfurization, pharmaceutical and food processing equipment.

BÖHLER L625 is a non-magnetizable corrosion and heat resistant nickel alloy in the form of bars, forgings and semi-finished products up to max 254 mm diameter/ cross-section and oxidation resistant up to 1093°C. Best fatigue strength and resistance to stress corrosion cracking when exposed to chloride containing media. Good weldability.

BÖHLER L625 AMPO is a non-magnetic, corrosion and scale-resistant nickel-base alloy. High toughness and strength from the lowest temperatures up to 1000 °C. Good printability.

The BÖHLER L718 AMPO is a hardenable nickel-base super alloy. This high heat-resistant material shows good strength properties at elevated temperatures up to 750 ° C, as well as excellent creep resistance up to 700 ° C. In addition, it shows excellent corrosion resistance and good printability. Essentially, the same properties can be achieved with printed components made from this powder as with bar material.

BÖHLER L718AMS is a corrosion and heat resistant nickel alloy – precipitation hardenable – in the form of bars, forging and forging stock. High resistance to creep and stress-rupture up to 1300°F (704°C) and oxidation resistance up to 1800°F (982°C). High duty parts and components for oil & gas and CPI applications, components for automotive, gas turbines, aerospace engines, high-speed airframe parts such as disks, buckets, spacers and high temperature bolts and fasteners.

BÖHLERL718 API (UNS N07718) is a high-strength, corrosion-resistant nickel-chromium-iron-molybdenum material with excellent corrosion resistance, especially in H2S and CO2 environments. The alloy is age-hardenable due to the addition of niobium, titanium and aluminium. BÖHLER L718 API is recognised by the oil industry for its simple and cost-effective production in combination with good tensile, fatigue, creep and fracture strength and is used in a wide range of applications in this sector. BÖHLER L718 API has excellent weldability and is resistant to cracking after welding. The material can be used at high temperatures. BÖHLER L718 API is available in the NACE/API 6A CRA versions with a minimum yield strength of 120/140 ksi and also in the high-strength version with 150 ksi. All hardness grades are suitable for sour service and can be used for pressurising and pressure-controlling equipment in corrosive environments. Typical applications include packers, pumps, connectors and fasteners as well as gate valves, throttle spindles, pipework hangers and fire safe valves, but also a wide range of downhole and completion components, nuclear and surface applications.

The BÖHLER L718 API AMPO is a hardenable nickel-base super alloy. This high heat-resistant material shows good strength properties at elevated temperatures up to 750 ° C, as well as excellent creep resistance up to 700 ° C. In addition, it shows excellent corrosion resistance and good printability. Essentially, the same properties can be achieved with printed components made from this powder as with bar material.

BÖHLER L825 (UNS N08825) is an austenitic nickel-iron-chromium alloy with additions of molybdenum, copper and titanium with exceptional resistance to many corrosive environments. The nickel content of BÖHLER L825 promotes resistance to chloride stress corrosion and, in combination with molybdenum and copper, offers significantly better corrosion resistance in reducing environments than conventional austenitic stainless steels. The chromium and molybdenum content provides resistance to pitting by chlorides as well as resistance to a wide range of oxidising atmospheres. The addition of titanium prevents sensitisation in the welded state and increases resistance to intergranular corrosion. The material can be used in a variety of process environments, including sulphuric, sulphuric, phosphoric, nitric, hydrofluoric and organic acids and alkalis such as sodium or potassium hydroxide and acidic chloride solutions. BÖHLER L825 can be easily formed and welded using a variety of techniques. BÖHLER L825 exhibits good toughness in continuous operation up to temperatures of around 550 °C and is suitable for pressure vessels with wall temperatures of up to 538 °C.

BÖHLER N400 is a stainless soft martensitic Cr steel with 4% nickel with molybdenum addition and medium corrosion resistance in media with only a low chloride content. To achieve the best possible corrosion resistance with BÖHLER N400, it is essential to polish the surfaces concerned. Good mechanical properties in the quenched and tempered condition. This makes this material very suitable for use in turbine and power plant construction. Very good low-temperature properties. Recommended temperature of use: – 60 to 350°C. Use for valves, pumps, compressors, centrifuges, hydroelectric machines, turbines, reactor technology, shipbuilding, chemicals. Special heat treatment to max. 23 HRC is required for sour gas enviroment in petroleum engineering.

BÖHLER N404 is a stainless, soft martensitic Cr steel with 5% nickel and molybdenum addition with higher corrosion resistance than that of stainless steels of type 1.4313. The molybdenum addition also permits limited use in the maritime sector. BÖHLER N404 is particularly insensitive to intergranular corrosion and very resistant to fatigue and stress corrosion cracking and offers good mechanical properties in the quenched and tempered condition. This makes this material very suitable for use in the oil and gas sector, e.g. for fittings, pumps, compressors, centrifuges, hydropower machinery, reactor technology, shipbuilding, chemicals, petroleum technology, aviation and refrigeration technology. Very good low-temperature properties. Recommended application temperature from – 60 to 350°C. Special heat treatment to max. 23 HRC is required for sour gas stress in petroleum technology. In order to achieve the best possible corrosion resistance, the relevant surfaces must be polished.

BÖHLER N425 (UNS S41427) – Super 13Cr – is a martensitic stainless steel with a nickel content of approx. 5% and 2% molybdenum, with excellent corrosion resistance in a CO2 environment and at low concentrations of chlorides and H2S and is more resistant than comparable 13%Cr steels. The steel is particularly resistant to intergranular corrosion and stress corrosion cracking, is easy to weld and offers good mechanical properties in the quenched and tempered condition even at low temperatures. Recommended application temperature from – 60 to 350°C. The material is specially tested for toughness and behavior under sour gas load. In order to achieve the best possible corrosion resistance, it is essential to polish the relevant surfaces. BÖHLER N425 is available with a minimum yield strength of 95 ksi and maximum hardness of 29 HRC, making it suitable for limited NACE oxygen applications and also available as a 110 ksi version for standard and CO2 applications. This material is used in downhole completion tools for components such as packers, safety valves and other applications.