Citat:
Ursprungligen postat av
Megaforce
Och du kopierar bara från wikipedia. Det som är problemet är att t.ex. Pratt & Whitney köper de titan-legeringar som man använder från en tillverkare i Ryssland. Detta helt enkelt av kostnadsskäl. Det går självfallet att köpa från andra håll, men det är inte så många som tillverkar sådana legeringar för flygbruk och det tar tid att beställa och få leveranser.
Inte?
"RTI International Metals, Inc has entered into a 13-year contract with Pratt & Whitney, a Division of United Technologies Corporation to supply rotor-quality titanium mill products for Pratt & Whitney's PurePower family of Geared Turbofan jet engines. As part of the agreement, Pratt & Whitney has agreed to be the engine launch customer for the new Electron Beam Furnace that recently started production at RTI's Canton, Ohio facility. "
http://supplier-news.pw.utc.com/2013_Q2/2013Q2_RTI_Titanium.html
"RTI International Metals which was founded in 1950,
is a leading US producer of titanium mill products and fabricated metal components for the global market. Through its various subsidiaries, RTI manufactures and distributes titanium and specialty metal mill products, extruded shapes, formed parts and engineered systems for
aerospace, industrial, defense, energy, chemical and consumer applications for customers around the world."
http://en.wikipedia.org/wiki/RTI_International_Metals
"
Allegheny Technologies Incorporated (ATI) is an American specialty metals company headquartered in Pittsburgh, Pennsylvania, in the United States.
ATI is one of the largest and most diversified specialty metals producers in the world with revenue of $5.2 billion in 2011.
ATI's key markets are aerospace and defense, oil & gas, chemical process industry, electrical energy, and Medical"
http://en.wikipedia.org/wiki/Allegheny_Technologies_Incorporated
"
Titanium Metals Corporation (formerly NYSE: TIE), founded in 1950,
is a leading manufacturer of titanium-based metals products, focusing primarily on the aerospace industry."
http://en.wikipedia.org/wiki/Titanium_Metals