A fuse wire is used in incandescent and fluoroscent tube lamps as circuit breakers when conditions of over-current or over-loading arise. Fuse wire makes up the outer-lead of one or both lead-in-wires. The following alloys can be used for fuse wires: NiCu30Fe, FeCrAl125, or FeNi43.
| Alloy | Ni | Mn | Fe | Si | Cu | C | Al | Ti |
|---|---|---|---|---|---|---|---|---|
| NiCu30Fe | Min 63 | Max 1.25 | 1.0- 2.5 | Max 0.50 | 28-34 | Max 0.15 | Max 0.50 | Max 0.20 |
| Alloy | Fe | Cr | C | Al | ||||
| FeCrAl125 | Balance | 14-16 | Max0.10 | 3.5-5.0 | ||||
| Alloy | Ni | C | Mn | Si | S | P | Fe | |
| FeNi43 | 41-43 | Max 0.05 | Max 1.0 | Max 0.3 | Max 0.02 | Max 0.02 | Balance | |
| Alloy | Density | Specific Resistance (Electrical Resistivity) |
Thermal Linear Expansion Coeff. Between 20-100 °C |
|---|---|---|---|
| g/cm³ | µΩ-cm | 10-6/°C | |
| NiCu30Fe | 8.80 | 51 | 13.9 |
| FeCrAl125 | 7.30 | 125 | 14.0 |
| FeNi43 | 8.11 | 61 | 5.3 |
| Alloy | Tensile strength N/mm² |
Elongation % at L0=100 mm |
||
|---|---|---|---|---|
| Min | Max | Min | Max | |
| NiCu30Fe | 450 | 650 | 20 | 30 |
| FeCrAl125 | - | 750 | 15 | - |
| FeNi43 | 400 | 600 | 25 | 35 |
| Form | Dia | Width | Thickness |
|---|---|---|---|
| mm | mm | mm | |
| Wire | 0.15-1.50 | - | - |
Applications
JLC 400 typical applications include springs, valves, pumps, propeller shafts, electrical and electronic components, to name a few. It is used as wire mesh and filters for chemical and pertrochemical industry, for connecting braids of heating elements, and for mechanical applications in cold-headed parts and fasteners. Another application is for welding core wires and MIG/TIG wires. This alloy is widely used in lamp industry as a fuse wire in lead-in-wires for lamps.
JLC 500 finds use in several industries such as chemical, oil and gas, medical, and marine. Typical applications include springs, valves, fasteners, pumps shafts, oil-well drilling collars, surgical blades, non-magnetic housings, sensors, and electronic components, etc.
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