18% Nickel Silver Alloy

A Copper-Nickel-Zinc Alloy

UNS C75200 65-18 Nickel Silver

UNS C77000 55-18 Nickel Silver

ASTMB 122

Additional specifications by request

Application

Optical parts, camera parts, rivets, screws, table and hollow ware, costume jewelry

Chemical Composition (Nominal %)

C75200

65 Cu, 18 Ni

C77000

55 Cu, 18 Ni, 27 Zn

Physical Characteristics

Density

.316 lb/in³

Tempers

C75200

Rockwell Grain Size (nominal) Tensile KSI*
B-Scale 30T
Annealed 25 - 40
35 - 55
45 - 70		 32 - 43
40 - 53
46 - 64		 0.070 mm
0.035 mm
0.015 mm
¼ hard 50 - 75 49 - 67 58 - 72
½ hard 68 - 82 62 - 72 66 - 80
hard 80 - 90 70 - 76 78 - 90
extra hard 87 - 94 74 - 79 86 - 98
spring 89 - 96 75 - 80 90 - 101

C77000

*KSI = 1000 psi
Rockwell Grain Size (nominal) Tensile KSI*
B-Scale 30T
Annealed 25 - 40
37 - 60
47 - 73		 35 - 46
41 - 57
47 - 65		 0.070 mm
0.035 mm
0.015 mm
¼ hard 70 - 88 63 - 75 69 - 87
½ hard 81 - 92 71 - 78 78 - 95
hard 90 - 96 76 - 80 92 - 109
extra hard 95 - 99 79 - 82 102 - 117
spring 97 - 100 80 & over 108 - 123

Sheet/Coil Sizes

Thickness

.005" - 0.125"

Width in coil

6.00" max

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