Nicore 55 is suitable for joining grey, ductile, or malleable cast iron to itself or mild steel.
Nicore 55 is a composite metal cored wire for repair and joining of cast iron materials. The deposit, which is approximately 53% iron and 45 nickel, provides an excellent match for the coefficient of expansion exhibited by cast irons. Cracking is minimized because thermal stresses caused by the heat of welding are minimized. The light slag is easily removed enhancing visual weld inspection. The fact that this is a continuous electrode will improve the operating factor and minimize unnecessary stops and starts. This electrode can replace covered electrodes such as AWS ENiFe-Cl or ENiFe-Cl-A. It may be used for repair welds or for joining various types of cast irons. Cast irons may be welded to steel and other ferrous and non-ferrous materials with this product. The machinability of the weld deposit is comparable to the matching covered electrode.
Substantial savings in weld metal deposition costs will be realized when replacing 55% nickel coated electrodes with Nicore 55. The deposition rate of this wire is more than twice that of a comparable coated electrode. The efficiency (approximately 97%) compared to that of coated electrodes (56% assuming 3" stub loss) is substantially greater. These two factors result in substantial savings in weld metal deposition costs. Because of the high deposition rate, the travel rate is very fast, resulting in lower heat input which is advantageous in welding cast irons.
* This item is subject to Industry Alloy Surcharges

| Ultimate Tensile Strength | 72.4 ksi, 500 MPa |
|---|---|
| Elongation in 2" | 12 % |
| Brinell Hardness | 187 BHN |
| Typical Chemistry (All Weld Metal) | |
| C | 1.05 % |
| Mn | 0.22 % |
| Si | 0.61 % |
| P | 0.009 % |
| S | 0.005 % |
| Ni | Balance % |
| Fe | 53.0 % |
| Part No. | Model / Product Description | UPC |
|---|---|---|
| 258070598 | NC 55 035X500#RL | 662303008628 |
| 258070606 | NC 55 1/16X200#RL | 662303008635 |
| 258070507 | NC 55 045X33#PSP | 662303008550 |
| 258070515 | NC 55 035X33#PSP | 662303008567 |
| 258070549 | NC 55 1/16X33#PSP | 662303008598 |
| 258070556 | NC 55 3/32X60#CL | 662303008604 |
| 258070408 | NC 55 045X15#PSP/60#CT | 662303082291 |
| 258070416 | NC 55 035X15#PSP/60#CT | 662303082307 |
| 35UN122500 | ES NC 55 1.2X15KG PSP VP | 662303083700 |
| 35UN124600 | ES NC 55 1.2X4.5KG PSP VP | 662303083717 |
| Diameter | Amps | Volts | Electrical Stickout |
|---|---|---|---|
| 0.035 in, 0.9 mm | 160 A | 27 | 1/2 inches, 12.7 mm |
| 0.045 in, 1.2 mm | 230 A | 28 | 1/2 inches, 12.7 mm |
| 1/16 in, 1.6 mm | 300 A | 28 | 5/8 inches, 14.7 mm |
| 3/32 in, 2.4 mm | 250 A | 20 | 5/8 -3/4 inches, 14.7 - 19 mm |
98% Argon - 2% Oxygen
Use DC reverse polarity current. For best results, set the amperage and then adjust the voltage for the smoothest operation. The shielding gas is 98% Argon - 2% Oxygen at a flow rate of 30 to 45 cubic feet per hour. When welding thin sections of new clean cast iron, preheat may not be neccessary. When welding heavy sections or cast iron to mild steel, preheat from 400ºF to 600ºF. When welding cast iron, a series of short intermittent welds rather than long continuous welds will minimize cracking. Light penning of each bead will reduce internal stresses and cracking tendencies. In general, it is necessary to observe the usual precautions of preheat, interpass temperature, joint preparation and welding technique used with other welding processes.
All listed prices are in U.S. dollars and represent the Manufacturer's Suggested Retail Price (MSRP) for sale in the United States. Actual selling price will be determined by the Distributor. Prices are subject to change without notice.