41xx steel is a family of SAE steel grades , as specified by the Society of Automotive Engineers (SAE). Alloying elements include chromium and molybdenum , and as a result these materials are often informally referred to as chromoly steel (common variant stylings include chrome-moly , cro-moly , CrMo , CRMO , CR-MOLY , and similar). They have an excellent strength to weight ratio and are considerably stronger and harder than standard 1020 steel, but are not easily welded , requiring thermal treatment both before and after welding to avoid cold cracking .
10-456: F36 or F.XXXVI may refer to : Fokker F.XXXVI , a 1934 Dutch four-engined 32-passenger airliner Hirth F-36 , an aircraft engine HMS Nubian (F36) , a 1937 British Royal Navy Tribal-class destroyer HMS Whitby (F36) , a British Royal Navy Whitby -class anti-submarine frigate [REDACTED] Topics referred to by the same term This disambiguation page lists articles associated with
20-467: Is not in great enough quantities to provide the corrosion resistance found in stainless steel . Examples of applications for 4130, 4140, and 4145 include structural tubing , bicycle frames , gas bottles for transportation of pressurized gases, firearm parts, clutch and flywheel components, and roll cages . 4150 stands out as being one of the steels accepted for use in M16 rifle and M4 carbine barrels by
30-535: The Fokker F.36 ) was a 1930s Dutch four-engined 32-passenger airliner designed and built by Fokker . It was the largest transport designed and built by Fokker. Only one was built, and it was used for some commercial routes starting in 1935, and later aviation training by the British Royal Air Force until 1940. The aircraft came on the market at a time when airliners were switching to all metal aircraft, whereas
40-539: The F.36 had an all wood wing with a fabric covered metal-framed fuselage. The aircraft had a quiet interior and good payload, but the range was low and it had a single seat cockpit in the forward-most position. An improved model with a side-by-side cockpit, the F.37, was designed but not built. With no orders for either model, no more of the design was made. The Fokker F.XXII (F.22) was a similar but smaller version of this aircraft, of which four were made. The Fokker F.XXXVI registered PH-AJA first flew on 22 June 1934 and
50-486: The F.XXXVI, the F.37 . It featured retractable landing gear with hydraulic suspension and 850 hp (634 kW) Wright GR-1820-G Cyclone engines. To save weight, the frame was to be made from chrome-molybdenum alloy tubing instead of steel and covered with fabric. Because of the higher takeoff weight, the wing spars and ribs were strengthened. The cockpit was redesigned to compete with the Douglas DC-2, and this allowed
60-500: The passenger cabin, enabling passenger to converse in a normal voice after take off. It was delivered to KLM and operated on European routes from March 1935. Although it had a good payload it was aerodynamically and structurally inferior to the Douglas DC-2 and DC-3 preferred by Fokker's main customer, KLM . Furthermore, as the maintenance advantages of all-metal aircraft became clear, and with no interest from other airlines, only one
70-482: The pilots to sit next to each other. Fokker planned to build eight aircraft and deliver them between March and July 1937. However, KLM preferred all-metal aircraft, and instead it was the DC-3 that entered service and not the F.37. Data from Jackson p. 373 and de Leeuw p.102 General characteristics Performance Related lists Chrome-molybdenum steel While these grades of steel do contain chromium, it
80-539: The same title formed as a letter–number combination. If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=F36&oldid=1121605344 " Category : Letter–number combination disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Fokker F.XXXVI The Fokker F.XXXVI (also known as
90-416: Was a high-wing cantilever monoplane with a fixed tailwheel landing gear. In Fokker tradition, the wing was an all wood structure and the fuselage was fabric covered steel tube. It was powered by four Wright Cyclone radial piston engines mounted in the wing leading edge, and carried 4 crew and 32 passengers in four eight-seat cabins. In an unusual decision, Fokker engineers went to great length in soundproofing
100-704: Was built. KLM sold the aircraft in 1939 to Scottish Aviation for use as a crew and navigation trainer for the Royal Air Forces No.12 Elementary Flying Training School, which was operated by Scottish Aviation. It was scrapped in 1940 after it burnt out in a take-off accident. Airspeed Ltd. in Great Britain arranged a license to build F.XXXVIs for the British market as the Airspeed AS.20 , but no orders were received. In 1936, Fokker developed an improved version of
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