Beryllium Copper Wire supplied Bare as well as Tinned and Silver coated
ASTM B197
This is an age harden able copper alloy that can be used in many automotive and aerospace applications as well as the electronics industry. The wire is also available as tinned coated or silver coated depending upon the application of the wire.
Chemical Requirements: (Composition, %)
| copper alloy uns# | copper | beryllium | aluminum max | silicon max | nickel + cobalt max | nickel + cobalt + iron, max | lead |
|---|---|---|---|---|---|---|---|
| C17200 | Remainder* | 1.80-2.00 | 0.20 | 0.20 | 0.20 | 0.6 | |
| C17300 | Remainder* | 1.80-2.00 | 0.20 | 0.20 | 0.20 | 0.06 | 0.20-0.60 |
*Taken by difference.
Tensile Strength Requirements for Round, Hexagonal, Octagonal and Square Wire After Precipitation Heat Treatment
| Standard | Temper Designation | Tensile Strength ksi* |
|---|---|---|
| TF00 | Precipitation hardened (AT) | 160-200 |
| TH01 | ¼ hard and precipitation heat treated (1/4 HT) | 175-210 |
| TH02 | ½ hard and precipitation heat treated (1/2 HT) | 185-215 |
| TH03 | ¾ hard and precipitation heat treated (3/4 HT) | 190-230 |
| TH04 | Hard and precipitation heat treated (HT) | 195-230 |
*These values apply to mill products.
TH03 (3/4 HT) condition is generally available up to 0.080 inches, inclusive, in diameter or distance between parallel surfaces.
Tensile Strength Requirements for Round, Hexagonal, Octagonal and Square Wire After Mill Hardening (Pretempered TL08 – Former Designation XHT)
| Diameter or Distance Between Parallel Surfaces, inches | Tensile Strength KSI, minimum |
|---|---|
| Over 0.050 to 0.075, excluded | 140-165 |
| Over 0.075 to 0.100, excluded | 120-140 |
| Over 0.100 to 0.114, included | 115-130 |
Tensile Strength Requirements for Round, Hexagonal, Octagonal and Square Wire
| Standard | Temper Designation | Tensile Strength KSI |
|---|---|---|
| TB00 | Solution Heat treated (Annealed)(A) | 58-78 |
| TD01 | Quarter-hard (1/4 H) | 90-115 |
| TD02 | Half-hard (1/2 H) | 110-135 |
| TD03 | Three-quarter hard (3/4 H) | 130-155 |
| TD04 | Hard (H) | 140-165 |
TD03 (3/4 HT) condition is generally available up to 0.080 inches, inclusive, in diameter or distance between parallel surfaces.