| Alloy | Temper | Designation 1) | Diameter/ Width across flats (mm) | Tensile test 2) | Hardness test 3) | Electrical conductivity (%IACS) 5) | Heat treatment | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Tensile strength (N/mm2) | Elongation (%) | Vickers 4) HV |
Rockwell | |||||||
| HRB | HRC | |||||||||
| 25 | Before age hardening | |||||||||
| O | C1720B-O | from 1 up to 6 | 410 - 590 | - | 90 - 190 | - | - | min. 17 | - | |
| over 6 up to 35 | 410 - 590 | - | 90 - 190 | 45 - 85 | - | min. 17 | - | |||
| H | C1720B-H | from 1 up to 6 | 645 - 900 | - | 180 - 300 | - | - | min. 15 | - | |
| over 6 up to 35 | 590 - 900 | - | 175 - 330 | 88 - 103 | - | min. 15 | - | |||
| After age hardening | ||||||||||
| OT | C1720B-OT | from 1 up to 6 | 1100 - 1380 | - | 300 - 400 | - | - | min. 22 | 315°Cx3h | |
| over 6 up to 35 | 1100 - 1380 | - | 300 - 400 | - | 34 - 40 | min. 22 | 315°Cx3h | |||
| HT | C1720B-HT | from 1 up to 6 | 1270 - 1650 | - | 340 - 440 | - | - | min. 22 | 315°Cx2h | |
| over 6 up to 35 | 1210 - 1620 | - | 330 - 430 | - | 37 - 45 | min. 22 | 315°Cx3h 6) | |||
| 11 | Before age hardening | |||||||||
| H | BeCuB11-H | from 1 up to 6 | 490 - 635 | - | 130 - 190 | - | - | min. 30 | - | |
| After age hardening | ||||||||||
| HT | BeCuB11-HT | from 1 up to 6 | 760 - 965 | - | 230 - 280 | - | - | min. 50 | 450°Cx2h | |
1) B in column "Designation" represents "bar" or "rod"
2), 3) If hardness specification is designated, tensile test will not be applied.
4), 5) Vickers hardness and electrical conductivity are for design guidance only.
6) If the diameter or width across flats is not exceeding 19mm, the conditions shall be
| Diameter/Thickness | max. 200 mm |
|---|---|
| Width | max. 300 mm |
| Rod | ||
|---|---|---|
| Specified Diameter | Tolerance | |
| Over | Up to and including | |
| from 1.0 | 2.5 | ±0.02 |
| 2.5 | 3.5 | ±0.02 |
| 3.5 | 5 | ±0.02 |
| 5 | 10 | ±0.03 |
| 10 | 20 | ±0.08 |
| 20 | 35 | ±0.10 |
| 35 | 40 | ±0.12 |
note) When the tolerance is specified either plus or minus side only, the same range of tolerance shall be applied.
