C7701 Nickel Silver Strip/Foil/Sheet C7521 Copper nickel Alloy

Name

ASTM/CDA

EN

JIS

GB/QB

Characteristics

Application

High precision zinc copper nickel alloy strip & plate

C75200

CuNi18Zn20

C7521

BZn18-18

Have beautiful sheen, good cold working, malleability, corrosion resistance, fatigue resistance, high elasticity, electronic and mechanical performance, and shield performance

Widely used to make structure which works in damp and corrosion medium, elastic element, precision instrument, communication industry, LCD oscillator shell, potentiometer reed and other electrical material.

C77000

CuNi18Zn27

C7701

BZn18-26

C75400

CuNi15Zn20

C7541

BZn15-20

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

Grade.

Condition

Thickness

(mm)

Tensile strength

(Mpa)

Elongation

(%)

Hardness

(HV)

CuNi15Zn20

M

≥0.3

≥340

≥35

Y2

440~570

≥5

Y

540~690

≥1.5

T

≥640

≥1

CuNi18Zn20

M

0.15~1.2

≥375

≥20

---

Y2

440~570

≥5

120~180

Y

≥540

≥3

≥150

CuNi18Zn27

M

0.15~1.0

≥400

≥40

---

Y2

540~655

≥8

150~210

Y

630~735

≥4

180~240

T

705~805

---

210~260

CuNi19

M

≥0.2

≥290

≥25

--

Y

≥390

≥3

--

CuNi30

M

≥0.2

≥370

≥23

85-125

Y

≥540

≥3

≥150