Little Falls Alloys
171-191 Caldwell Avenue Paterson, NJ 07501
(973)-278-1666 fax (973)-278-7345
Toll Free (888) LFA-WIRE
info@lfa-wire.com
Little Falls Alloys
171-191 Caldwell
Avenue Paterson,
NJ 07501
(973)-278-1666 fax (973)-278-7345
Toll Free (888) LFA-WIRE
info@lfa-wire.com
BERYLLIUM COPPER
C17200 and C17300 - Heat Treatable
COMPOSITION - |
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| ELEMENT | PERCENT | ||
| NOMINAL | MINIMUM | MAXIMUM | |
| Copper | 98.1 | - | - |
| Beryllium | 1.90 | 1.80 | 2.0 |
| Cobalt & Nickel | - | .20 | - |
| Cobalt & Nickel & Iron | - | - | .60 |
| Cu + Be + Co + Ni + Fe | - | 99.50 | - |
| Silicon | - | - | .20 |
| Aluminum | - | - | .20 |
| Lead | - | - | .20 - .60 for (C17300) |
PHYSICAL PROPERTIES |
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| HEAT TREATED CONDITION | ENGLISH UNITS | METRIC UNITS |
| Melting Range | 1590 - 1800°F | 865 - 980°C |
| Density | .298 lb/cu in. @ 68°F | 8.26 gm/cm@ 20°C |
| Specific Gravity | 8.26 | 8.26 |
| Coefficient of Thermal Expansion | .0000099 per °F (68-572°F) | .0000178 per °C (20-300°C) |
| Thermal Conductivity | 62-75 BTU/sq ft/ft/hr/°F @ 68°F | .26-.31 cal/sq cm/cm/sec/°C @ 20°C |
| Electrical Resistivity | 46.2 Ohms-circ mil/ft @ 68°F | 7.68 microhm - cm @ 20°C |
| Electrical Conductivity | ||
| (age hardenable) | 15-19% Copper IACS @ 68°F | .87-.110 megohm cm @ 20°C |
| (age hardened) | 19-28% Copper IACS @ 68°F | .110-.163 megohm cm @ 20°C |
| Specific Heat | .10 BTU/lb/°F @ 68°F | .10 cal/gm/°C @ 20°C |
| Modulus of Elasticity (tension) | ||
| (age hardenable) | 17,000 KSI | 12,000 kg/sq mm |
| (age hardened) | 18,500 KSI | 13,000 kg/sq mm |
| Modulus of Rigidity (torsion) | ||
| (age hardenable) | 7,300 KSI | 5,000 kg/sq mm |
| (age hardened) | 6,500 KSI | 4,600 kg/sq mm |
MECHANICAL PROPERTIES |
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| For Round, Half Round and Square Wire | |||||||
| AS SUPPLIED | AFTER PRECIPITATION HEAT TREATMENT | ||||||
| DESIGNATION | TENSILE STRENGTH | DESIGNATION | TENSILE STRENGTH | ||||
| STD. | FORMER | KSI* | MPa** | STD. | FORMER | KSI* | MPa** |
| TB00 | Solution Annealed (A) | 58-78 | 400-540 | TF00 | Precipitation Hardened (AT) | 165-190 | 1105-1310 |
| TD01 | Quarter Hard (1/4H) | 90-115 | 620-795 | TH01 | Precipitation Hardened (1/4HT) | 175-205 | 1205-1415 |
| TD02 | Half Hard (1/2H) | 110-135 | 760-930 | TH02 | Half Hard (1/2HT) | 185-210 | 1275-1480 |
| TD03 | Three Quarter Hard (3/4H) | 130-155 | 895-1070 | TH03 | Three Quarter Hard (3/4H) | 190-230 | 1310-1585 |
| TD04 | Hard (H) | 140-165 | 965-1140 | TH04 | Hard (HT) | 195-230 | 1345-1585 |
| TD05 | Five NOs Hard | 150-175 | 1035-1200 | TH05 | Five NOs Hard | 195-230 | 1035-1205 |
| TD06 | Extra Hard (XH) | 155-180 | 1070-1240 | TH06 | Extra Hard (XH) | 205-235 | 1415-1620 |
Yield Strength @ .2% offset, about 92% of T.S. (after Heat Treat)
MECHANICAL PROPERTIES - BERYLLIUM COPPER C17200 & C17300 |
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| For Rolled Flat Wire other than Square - As Supplied | |||
| DESIGNATION | TENSILE STRENGTH | ||
| STD. | FORMER | KSI* | MPa** |
| TB00 | Solution Annealed (A) | 60-78 | 410-540 |
| TD01 | Quarter Hard (1/4H) | 75-88 | 510-610 |
| TD02 | Half Hard (1/2H) | 85-100 | 590-690 |
| TD04 | Hard (H) | 100-120 | 690-830 |
MECHANICAL PROPERTIES - BERYLLIUM COPPER C17200 & C17300 |
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| For Rolled Flat Wire other than Square - After Precipitation Heat Treatment |
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| DESIGNATION | TENSILE STRENGTH | ||
| STD. | FORMER | KSI* | MPa** |
| TF00 | Solution Annealed (AT) | 165-190 | 1140-1310 |
| TH01 | Quarter Hard (1/4HT) | 175-200 | 1210-1380 |
| TH02 | Half Hard (1/2HT) | 185-210 | 1280-1450 |
| TH04 | Hard (HT) | 190-215 | 1310-1480 |
HEAT TREATMENT |
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| DESIGNATION | HOURS @ 600°F | ||
| STD. | FORMER | FLAT WIRE | ROUND WIRE |
| TF00 | Solution Annealed (AT) | 3 | 3 |
| TH01 | Quarter Hard (1/4HT) | 2-1/2 | 2 |
| TH02 | Half Hard | 2 | 1-1/2 |
| TH03 | Three Quarters Hard and Up | 2 | 1 |
This is standard specification treatment.
Temperatures from 550°F -700°F (288 - 370°C) are used for special purposes with corresponding adjustments of time.
BERYLLIUM COPPER
C17200 & C17300
ASTM Material
Specifications