CMW® D50F Silver Nickel Alloy

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CMW® D50F Silver Nickel Alloy (discontinued **)
Categories:	Metal; Nonferrous Metal; Precious Metal; Silver Alloy
Material Notes:	This material has been rebranded as NAECOMET® D50F. CMW® D50F can be fabricated into wire, rod and strip; however, the headability of CMW® D50F is limited to a narrow range. It is used for main contacts in circuit breakers and switching devices where auxiliary contacts are used. This type of material has good resistance to mechanical wear under high contact forces, and maintains a stable surface resistance. Information provided by CMW Inc.
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Physical Properties	Original Value	Comments

Density	0.33625 lb/in³

Mechanical Properties	Original Value	Comments
Hardness, Rockwell F	40	annealed
	89	cold worked
Tensile Strength, Ultimate	27000 psi	annealed
	50000 psi	cold worked

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.00000220 ohm-cm	80 % IACS

Component Elements Properties	Original Value	Comments
Nickel, Ni	15 %
Silver, Ag	85 %

**
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NCMW077 / 15890

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