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ASTM B122 C7521 C75200 CuNi18Zn20 Copper Nickel Zinc Alloy Bright Surface Cold Rolling

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ASTM B122 C7521 C75200 CuNi18Zn20 Copper Nickel Zinc Alloy Bright Surface Cold Rolling

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Brand Name :	OHMALLOY
Model Number :	C7521
Certification :	ISO ROHS
Price :	negotiable
Payment Terms :	, L/C, T/T
Supply Ability :	20000T/Year
Delivery Time :	7-20days after your deposit received

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ASTM B122 C7521 C75200 CuNi18Zn20 Copper Nickel Zinc Alloy Bright Surface Cold Rolling

Nickel Silver Bzn 18-18 Copper-Nickel-Zinc Alloy C7521 Rod GB Bzn18-18 Bar

Product Description

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.

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,fabrication 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

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

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

ASTM B122 C7521 C75200 CuNi18Zn20 Copper Nickel Zinc Alloy Bright Surface Cold Rolling

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