Becu Beryllium Copper Strip C17200 XHM State Hard Springs Material
Cube2--C17200 Beryllium Copper is the most commonly utilized
Copper Beryllium alloy and is notable for its highest strength and
hardness compared to commercial copper alloys. C17200 alloy
contains appr. 2% of beryllium and achieves its ultimate tensile
strength can exceed 200 ksi, while the hardness approaches Rockwell
C45.C17200 also exhibits exceptional resistance to stress
relaxation at elevated temperatures.
Typical Application for C17200 Beryllium Copper Alloys: Electrical Industry: Electrical Switch and Relay Blades, Fuse Clips, Switch Parts,
Relay parts, Connectors, Spring Connectors, 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
Available Sizes: Custom Diameter & Sizes, Random Mill lengths
Available Products (forms): Round bars, Round strips, Round wires, Round tube, Flat bars, Square bars, Rectangular bars, Hexagon bars, Plates,
Sheets, Coils Custom shapes are available upon request.
Beryllium copper strip Mechanical Properties
| Symbol or Brands | Chemical Composition | Temper | Tensile Strength (N/mm2) | Elongation (%) | Endurance | Vickers Hardness (HV) | Electric Conductivity (%IACS) |
| C1720 | Be:1.8-2.0 Ni+Co≥0.20 Ni+Co+Fe≤0.6 Cu+Be+Co+Fe ≥99.5 | Before age-hardening |
| O | 410-540 | ≥35 | - | 90-160 | ≥17 |
| 1/4H | 510-620 | ≥10 | - | 45-220 | ≥16 |
| 1/2H | 590-695 | ≥5 | - | 180-240 | ≥15 |
| H | 685-835 | ≥2 | - | 210-270 | ≥15 |
| After age-hardening |
| OT | 1100-1380 | ≥3 | ≥960 | 325-400 | ≥22 |
| 1/4HT | 1180-1400 | ≥2 | ≥1030 | 350-430 |
| 1/2HT | 1240-1440 | ≥2 | ≥1100 | 360-440 |
| HT | 1270-1480 | ≥1 | ≥1140 | 380-450 |
| Spread(Standard) |
| OM | 685-885 | ≥18 | ≥480 | 220-270 | ≥17 |
| 1/4HM | 735-930 | ≥10 | ≥550 | 235-285 |
| 1/2HM | 815-1010 | ≥8 | ≥650 | 260-310 |
| HM | 910-1110 | ≥6 | ≥750 | 295-345 |
| XHM | 1100-1290 | ≥2 | ≥930 | 340-390 |
| XMHS | 1210-1400 | ≥2 | ≥1030 | 360-410 |
