C17200 Copper (CDA 172) beryllium copper alloy
ASTM B196, AMS 4533, SAE J461, RWMA CLASS IV
C17200 is also known as Alloy 25 and is the most commonly utilized beryllium copper alloy and is notable for exhibiting the highest strength and hardness compared to commercial copper alloys. Its strength and hardness is similar to that of steel. C17200 copper’s ultimate tensile and Rockwell hardness properties in a peak aged condition are in the 200 ksi range and RC 45 respectively (electrical conductivity 22% IACS minimum).
Typical Uses for C17200 Beryllium Copper:
ELECTRICAL: | ||
---|---|---|
Electrical Switch / Relay Blades | Fuse Clips | Switch Parts |
Relay Parts | Connectors | Spring Connectors |
Current Carrying | Contact Bridges | Belleville Washers |
Navigational Instruments | Clips | |
FASTENERS: | ||
Washers | Fasteners | Lock Washers |
Retaining Rings | Roll Pins | Screws |
Bolts | ||
INDUSTRIAL: | ||
Pumps | Springs | Electrochemical |
Shafts | Non Sparking Safety Tools | Flexible Metal Hose |
Housings for Instruments | Bearings | Bushings |
Valve Seats | Valve Stems | Diaphragms |
Springs | Welding Equipment | Rolling Mill Parts |
Spline Shafts | Pump Parts | Valves |
Bourdon Tubes | Wear Plates on Heavy Equipment | Bellows |

C17200 Copper (CDA 172)
Sizes Available From DOWEDO
SOLID BAR: 1/4″ . 6″ diameter
RECTANGLES: 3/8″ x 1/2″ . 1″ x 3″ thickness x width
SQUARES: 3/8″ . 3″ square
PLATES: 2″ . 5″ thickness
DISCS & RINGS: orged to size
HONED TUBES: up to 4″ OD
Specifications
End Product Specification
Bar AMS 4650, 4651, 4533, ASTM B194, B196, MILITARY MIL-C-21657, SAE J463, J461
Extrusions ASTM B570
Forgings AMS 4650, ASTM B570
Plate ASTM B194
Rod AMS 4650, 4534, 4533, 4651, ASTM B196, MILITARY MIL-C-21657, SAE J463, J461
Rod, Forging AMS 4650
Sheet ASTM B194
Strip ASTM B194, SAE J463, J461
Tube, Seamless AMS 4535, ASTM B643
Wire AMS 4725, ASTM B197, SAE J463, J461

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