Technical Data
80-20 COPPER NICKEL C71000
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COMPOSITION |
|||
| ELEMENT | PERCENT | ||
| NOMINAL | MINIMUM | MAXIMUM | |
| Copper | – | 74.0 | – |
| Lead | – | – | .05 |
| Iron | – | – | 1.0 |
| Zinc | – | – | 1.0 |
| Nickel (including Cobalt) | 21.0 | 19.0 | 23.0 |
| Manganese | – | – | 1.0 |
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PHYSICAL PROPERTIES |
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|
HEAT TREATED CONDITION |
ENGLISH UNITS |
METRIC UNITS |
|
Melting Range |
2100-2190°F |
1150-1200°C |
|
Density |
.323 lb/cu in. @ 68°F |
8.94 gm/cm@ 20°C |
|
Specific Gravity |
8.94 fixed |
8.94 |
|
Coefficient of |
.0000091 per °F (68-572°F) |
.0000164 per °C (20-300°C) |
|
Thermal Conductivity |
21 BTU/sq ft/ft/hr/°F @ 68°F |
.087 cal/sq cm/cm/sec/°C @ 20°C |
|
Electrical Resistivity |
162 Ohms circ mil per ft @ 68°F |
27 microhm – cm @ 20°C |
|
Electrical Conductivity |
6.4% Copper IACS @ 68°F |
.037 megohm cm @ 20°C |
|
Specific Heat |
.09 BTU/lb/°F @ 68°F |
..09 cal/gm/°C @ 20°C |
|
Modulus of Elasticity (tension) |
20,000 KSI |
14,100 kg/sq mm |
|
Modulus of Rigidity (torsion) |
7,500 KSI |
5,200 kg/sq mm |
|
Annealing Temperature |
1200-1500°F |
650-825°C |
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MECHANICAL PROPERTIES |
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| For Round, Half Round and Square Wire | ||||||
| DESIGNATION | TENSILE STRENGTH |
YIELD STRENGTH |
% |
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| STD | FORMER | KSI* nominal |
MPa** nominal |
KSI* | MPa** | |
| – | Annealed (A) | 48 | 330 | 18 | 124 | 45 |
| H01 | Quarter Hard (1/4H) | 55-62 | 380-495 | 65 | 448 | 7.5 |
| H02 | Half Hard (1/2H) | 67-83 | 460-570 | 73 | 503 | 5.5 |
| H04 | Hard (H) | 77-92 | 530-635 | 82 | 505 | 5 |
| H08 |
Spring |
90 min 88 min |
620 min 605 min |
855 | 586 | 5 |
| H14 | Extra Spring .020 to .040 | 100-115 | 690-790 | 90 | 620 | 3 |
|
MECHANICAL PROPERTIES |
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| For Rolled Flat Wire other than Square | |||
| DESIGNATION | TENSILE STRENGTH | ||
| STD. | FORMER | KSI* | MPa** |
| H01 | Quarter Hard (1/4HT) | 47-63 | 324-434 |
| H02 | Half Hard (1/2HT) | 56-70 | 386-482 |
| H04 | Hard (HT) | 67-79 | 461-544 |
| H06 | Extra Hard (XH) | 72-84 | 496-579 |
| H08 | Spring | 76-87 | 524-600 |
* 1 KSI equals 1,000 PSI
** 1 KSI equals 6.894,757 MPa
80-20 COPPER-NICKEL, C71000