High quality Copper-Nickel strip

High quality Copper-Nickel strip   Parameter for Nickel Silver Strips/Copper Nickel Zinc Strips:     

Alloy No.	Chemical Composition
	Cu	Mn	Ni	Zn
C7521	62.0-66	0-0.5	16.5-19.5	Remainder
C7541	60.0-64	0-0.5	12.5-15.5	Remainder
C7701	54.0-58	0-0.5	16.5-19.5	Remainder

  C7521 Nickel Silver    CuNi18Zn20 – UNS.C75200 Zinc Cupronickel Alloys   C7521 (CuNi18Zn20) - UNS.C75200 Nickel Silver Alloys, also called Copper - Nickel - Zinc alloys, 65 - 18 - 18 respectively,  which has good formability, good corrosion and tarnish - resistance performance, and this alloy has the pleasing  silver - like color.   Available Products (forms):    Strip, Plate, Wire, Round bars, Flat bars, Square bars, Rectangular bars, Hexagon bars   Chemical composition  

Articles				Chemical composition
GB	UNS	EN	JIS	Cu%	Ni%	Zn%
BZn18-18	C75200	CuNi18Zn20	C7521	62-66	16.5-19.5	Rem

  Physical properties  

Physical properties					fabrication properties
density g/cm3	electrical conductivity  %IACS	thermal  conductivity  W/(m.K)	modulus     of  elasticity    GPa	specific    heat  J/(g.K)	cold-workability	machinability	electric   plating  property	hot dip     tin  plating  property	weldability	corrosion
8.73	6	32	125	0.34	excellent	suitable	excellent	excellent	good	excellent

  Mechanical properties

Mechanical properties
State	Hardness HV	Tension test			bending test
		Thickness mm	Tensile strength MPa	elongation %	thickness	angles	ID
0	-	0.1-5.0	≥375	≥20	≤1.6	180°	sticking closely
1/2H	120-180	0.1-5.0	440-570	≥5	≤1.6	180°	100% of thickness
					≤0.5		200% of thickness
H	150-210	0.1-0.15	540-640	-	≤1.6	180°	200% of thickness
		>0.15-5.0		≥3	≤0.5		400% of thickness
EH	≥185	0.1-5.0	≥610	-	-	-	-

    Features for Nickel Silver Strips/Copper Nickel Zinc Strips:   

1) Good color 2) High toughness 3) High strength 4) High stability 5) Excellent elasticity with fine silver gloss 6) Good fatigue 7) Rust and corrosion resistance properties 8) C7521 and C7541 have very good deep-drawing performance     Applications for Nickel Silver Strips/Copper Nickel Zinc Strips:


1) Shielding material for communication electronics 2) Antenna material 3) EMI-shielding material 4) Spring contact 5) Flexible terminal 6) Environmentally-friendly plating-free electronic parts and components 7) Quartz oscillator 8) High-level material 9) Electric material