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Call Us at 815-397-9707
Design and Build Molds & Dies - Specializing in EDM, Jig Grinding, 3D Modeling, & High Speed Machining, EDM Supplies & Consumables.
Located in Rockford, Illinois
ISO 9001 and AS9100C Certified

Copper Tungsten Material Chart


Copper Tungsten is sold in bars, plates, rounds and squares. Our stock items of copper tungsten are the 70/30 - 70% tungsten and 30% copper - the most common grade used in EDM applications. We also supply 60/40 and 75/25 grades for specific applications.

Material Grades

 Grade

Description

%

RWMA
Class

Density
Grams / CC

Elect Cond
%IACS 

Hardness 

S15WC

Tungsten Copper

70
30

EDM

14.25 

44-52

90-96RB 

S10WC

 Tungsten Copper

75
25

11

 14.80

 42-50

96-99RB

S30WC

 Tungsten Copper

80
20

12

 15.60

 41-49

 99-104RB

S20WS

 Tungsten Silver

78
22

 EDM

 15.56

 48-53

 90-100RB



Decimal Equivelants

Fraction

Decimal

Fraction

Decimal

 1/64

.015625

 33/64

.515625

 1/32

.03125

 17/32

.53125

 3/64

.046875 

 35/64

.546875

 1/16

.0625

 9/16

.5625

 5/64

.078125

 37/64

.578125

 3/32

.09375

 19/32

.59375

 7/64

.109375

 39/64

.609375

 1/8

.125

 5/8

.625

 9/64

.140625

 41/64

.640625

 5/32

.15625

 21/32

.65625

 11/64

.171875

 43/64

.671875

 3/16

.1875

 11/16

.6875

 13/64

.203125

 45/64

.703125

 7/32

.21875

 23/32

.71875

 15/64

.234375

 47/64

.734375

 1/4

.250

 3/4

.750

 17/64

.265626

 49/64

.765625

 9/32

.28125

 25/32

.78125

 19/64

.296875

 51/64

.796875

 5/16

.3125

 13/16

.8125

 21/64

.328125

 53/64

.828125

 11/32

.34375

 27/32

.84375

 23/64

.359375

 55/64

.859375

 3/8

.375

 7/8

.875

 25/64

.390625

 57/64

.890625

 13/32

.40625

 29/32

.90626

 27/64

.421875

 59/64

.921875

 7/16

.4375

 15/16

.9375

 29/64

.453125

 61/64

.953125

 15/32

.46875

 31/32

.96875

 31/64

.484375

 63/64

.984375

 1/2

.500

 1

1.000 

***Call or Email for Price & Availability***

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