Trim Material for Gate Valve - CR4 Discussion Thread

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Anonymous Poster	Trim Material for Gate Valve 01/02/2009 2:13 AM
	Hallo Would you please explain to me what is the Trim material A182 F6+Stellited? thank you zimmermann
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Guest. Power-User Join Date: Dec 2008 Posts: 130 Good Answers: 17	#1 Re: Trim material for gate valve 01/02/2009 3:36 AM
	ASTM A182 / A182M - 08a Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service Within that standard there are two types of martensitic stainless steels: F6a : UNS S41000 F6b : UNS S41026 Furthermore, for F6a there are 4 classes of specified heat treatment (1,2,3, & 4) But only one heat treatment for F6b The stellite is a hard face coating to prevent wear and erosion: http://stellite.com/Technical/AlloyDatabase/tabid/262/Default.aspx
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