Beryllium Copper Chemical Specifications


Specifications Copper Beryllium Strip

Materion Brush Performance Alloys
UNS Number
Specification
25
C1720
ASTM B 194
QQ-C-553
AMS 4530, 4532
190
C17200
ASTM B 194
290
C17200
ASTM B 194
3
C17510
ASTM B 534
MIL-C-81021
RWMA Class 3
174
C17410
ASTM B 768
Brush 60
C17460
ASTM B 768
ASTM
American Society for Testing and Materials
QQ
Federal Specification
MIL
Military Specification
SAE
Society of Automotive Engineers
AMS
Aerospace Materials Specification (Published by SAE)


Note: Unless otherwise specified, material will be produced to ASTM

Chemical Composition
(Weight Percent)
Copper Beryllium Strip
 
Materion Brush Performance Alloys
Copper Alloy UNS Number
Beryllium
Cobalt
Nickel
Cobalt Nickel
Cobalt Nickel Iron
Lead
Copper
25
C17200
1.80-2.00
-
-
-
.20 min
.02 max
Balance
190
290
 
3
C17510
.2-.6
-
1.4-2.2
-
-
-
Balance
174
C1740
.15-.50
0.35-.60
-
-
-
-
Balance
60
C17460
.16-0.50
-
1.0-1.4
-
-
-
Balance

Note: Copper plus additions equal 99.5% minimum