Alloy 686 is an alloy that improves the chromium content in C276 alloy by reducing iron content. This alloy has both the ability to resist reducing media of 276 and the ability to resist oxidizing media of C22. In addition, low carbon, low silicon, and low iron make the alloy highly thermally stable and reduce the precipitation of harmful phases, thereby giving the alloy excellent resistance to sensitization and greatly improving its resistance to intergranular corrosion.

1. Main specifications:
   

   Alloy	UNS	W.Nr	EN DESIGNATION
   686	N06686	2.4606	NiCr21Mo16W

    

2. Chemical composition under ASTM B163 standard:

   Grade	chemical composition,%
   UNS N06686	Ni	Cr	Mo	W	Fe
   	remainder	19.0-23.0	15.0-17.0	3.0-4.4	≤5.0
   Mn	C	Si	Ti	S	P
   ≤0.75	≤0.01	≤0.08	0.02-0.25	≤0.02	≤0.04

   Ni element shall be determined arithmetically by difference.

   Remarks：If require adjustments for some chemical compositions, pls consult with us.

   
   

3. Main product types:

   wire,rod,forging,bar,strip,sheet/plate.

    

4. Main produce standards:
   

   Wire,Rod, Bar,Forging	Pipe/Tube	Plate/Sheet/Strip
   ASTM/ASME  B564 ASTM/ASME  B574  DIN17744	ASTM/ASME B163   ASTM/ASME  B619  ASTM/ASME  B622	ASTM/ASME  B575

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