Chirurgie

Pièces dans le secteur de l’urée, les têtes de pompe, les tiges de soupape, les condensateurs, les réacteurs, les strippeurs et les débourbeurs. Industrie de la teinturerie, par exemple bains de blanchiment et bains de teinture, industries des textiles, du papier et du cuir, industrie chimique, pharmaceutique et des fibres synthétiques.

BÖHLER L035 is a 35-cobalt-35-nickel-20-chromium-10-molybdenum wrought alloy (UNS R30035) used for the production of surgical implants. This alloy composition has been successfully used in human implants. Long-term clinical experience has shown an acceptable biological response. The exceptional properties of BÖHLER L035 result from its chemical composition, high-quality melting technology, cold forming and heat treatment. It is a vacuum induction melted (VIM) and vacuum arc remelted (VAR) superalloy. BÖHLER L035 is a nickel-cobalt based multiphase alloy system with a unique combination of properties e.g. extremely high strength, toughness, ductility and excellent corrosion resistance. The alloy can be strengthened and aged in the factory to achieve strength values of max. 260 to 300 ksi (1793-2086 MPa) and stress corrosion cracking (SCC) resistance even in hydrogen sulphide. The BÖHLER L035 alloy resists pitting and crevice corrosion caused by seawater, chloride solutions and other corrosive environments, e.g. mineral acids (nitric, hydrochloric, sulphuric acid).

BÖHLER L605 is a wrought cobalt-20chromium-15tungsten-10nickel alloy used for surgical implants. The properties specified apply specifically to wrought bar, rod, wire BÖHLER L605 is a nonmagnetic cobalt-based chromium-tungsten nickel alloy that has excellent corrosion and oxidation resistance, and high strength at both room and elevated temperatures. Usually BÖHLER L605 is supplied solution heat treated and quenched condition to attain optimum properties. Through work hardening, high strength levels can be obtained and BÖHLER L605 can be used in the cold worked and aged condition. Applications include medical implant devices, e.g. stents, springs, valves, and engine components for the aerospace industry. The alloy composition covered by this specification has been successfully employed in human implants. Long-term clinical experience has shown an acceptable level of biological response.

Paliers de roulement résistant à la corrosion, transmissions et composants résistant à l’usure, par exemple pour l’industrie aéronautique, le médical, les industries pharmaceutiques, alimentaires et des matières plastiques.

Acier au chrome martensitique inoxydable de 13% pour les outils de coupe de tous genres, tels que les lames, les ciseaux, les couteaux de table, de cuisine et de machines.

BÖHLER N685 est un acier résistant à la corrosion avec des ajouts de molybdène et de vanadium sous forme de barres, de fils, de pièces forgées. Ces produits sont généralement utilisés pour des pièces d’ingénierie et des applications médicales nécessitant une dureté allant jusqu’à 58 HRC et une résistance à l’usure, à la corrosion et à l’oxydation, mais leur utilisation n’est pas limitée à ces applications.

Outils en acier trempé à haute tenue à la coupe, comme par exemple lames de couteaux, instruments chirurgicaux de coupe, lames rotatives pour l’industrie de la viande, couteaux et cuves de balance.

BÖHLER N695 is a corrosion-resistant, martensitic chromium steel with a high carbon content and added molybdenum.

BÖHLER N700 is a martensitic, corrosion-resistant, precipitation-hardenable chromium-nickel-copper steel with high strength and toughness. Further increases in strength can be achieved by cold forming and subsequent precipitation hardening. These products are typically used for parts that require higher corrosion resistance than the usual 13% or 17% chromium steels and high strength. Various remelting processes are used to improve steel purity and homogeneity. (ESR, PESR, VAR). Certain processing methods and operating conditions can make these products susceptible to stress corrosion cracking. For applications such as bolting where stress corrosion cracking is possible, the product should be aged for at least 4 hours at the highest temperature compatible with the strength requirements, but in no case lower than 552 °C. Typical engineering applications include surgical and dental instruments as well as aerospace components, reactor construction, highly stressed pump parts, springs and ship shafts.

BÖHLER N700 SA is a premium aerospace-quality corrosion-resistant steel available in bars, wire, and forgings with diameters/thicknesses up to 203 mm in the solution-annealed condition, as well as starting material of any size for forging purposes. It is a martensitic, precipitation-hardenable chromium-nickel-copper steel with high strength and toughness. Further strength increases can be achieved through cold working and subsequent precipitation hardening. These products are typically used for parts requiring corrosion resistance and high strength up to 316 °C, but their use is not limited to such applications. Certain processing methods and operating conditions can make these products susceptible to stress corrosion cracking. For applications such as bolted joints where stress corrosion is possible, the product should be aged for at least 4 hours at the highest temperature compatible with the strength requirements, but in no case lower than 552 °C.

BÖHLER N765 (UNS S46500) is a double vacuum-melted, stainless, maraging steel (PH-Grade) with a unique combination of high strength, toughness and corrosion resistance. The products are typically used for heat-treated parts where resistance to stress corrosion cracking, high strength and toughness up to 427 °C (800 °F) with good ductility and transverse strength are required. BÖHLER N765 material achieves a tensile strength of over 250 ksi (1722 MPa) when aged at 950 °F (H950 condition) and offers a superior combination of strength, toughness and stress corrosion cracking resistance compared to other high strength PH-steels such as 15-5PH or PH 13-8Mo. Hardening temperatures from 950°F to 1050°F can be selected to achieve the desired combination of strength, toughness and stress corrosion cracking resistance. The alloy not only meets the special and demanding requirements of the aerospace industry, but is also used in marine equipment, firearms, hand tools, oil and gas drilling and the medical industry, among others.

P511 – Acier non magnétisable

Le BÖHLER P513 est un acier inoxydable austénitique soudable et non magnétique qui résiste à l’eau de mer et à la corrosion intergranulaire. Il ne nécessite pas de traitement thermique après soudage. Il offre la meilleure résistance au grippage de tous les aciers inoxydables et une résistance élevée aux piqûres. La résistance à l’oxydation du BÖHLER P513 est bien supérieure à celle des aciers inoxydables austénitiques Cr-Ni courants (Type 304), pas aussi bonne que celle des types Cr-Ni-Mo (316). Il offre toutefois une meilleure résistance aux piqûres, à la corrosion sous contrainte et à la corrosion caverneuse que le Type 316 dans des conditions d’essai standard. Le BÖHLER P513 est un alliage inoxydable austénitique renforcé à l’azote, à haute teneur en silicium et en manganèse, qui a été conçu à l’origine comme un alliage de température et qui fonctionne donc bien à haute température, autour de 982°C. Les ajouts de silicium et de manganèse aident à inhiber l’usure, le grippage et l’usure de contact, même à l’état recuit. En travaillant à froid le BÖHLER P513, il est possible d’obtenir des résistances plus élevées, mais cela n’améliore pas les propriétés anti-grippage. Il est utilisé dans les industries aérospatiale, alimentaire et pharmaceutique, pétrolière, pétrochimique, chirurgicale et chimique, par exemple pour les tiges de vannes, les sièges et les garnitures, les systèmes de fixation, le criblage, les systèmes d’entraînement par chaîne, les goupilles, les bagues et les roulements, les composants de pompes (bagues d’usure et lobes), les applications en contact avec les denrées alimentaires.

BÖHLER P558 is a high-nitrogen 11% manganese-17% chromium-3% molybdenum-nickel stainless steel for surgical implants. Its metallurgical requirements include a fine-grained, austenitic microstructure without delta ferrite, low inclusion content, and resistance to intergranular corrosion. BÖHLER P558 also exhibits pitting and crevice corrosion resistance that is significantly better than the reference material in Specification F138 and exceeds the material values ​​specified in Specification F1314 and Specification F1586. Biocompatibility tests for this material have been positive and meet the requirements of the test standards used. The chemical composition of this steel features a high carbon content, along with high nitrogen content. The high carbon content is considered critical in the conventional metallurgy of chromium-nickel stainless steels, but the simultaneous alloying of nitrogen and carbon in BÖHLER P558 has a beneficial effect on the stabilization of the austenitic phase, extends the range of austenite stability to lower solution annealing temperatures, increases corrosion resistance, and leads to better toughness properties.