Atom Arc 10018-MM is an all-position low hydrogen electrode used to weld low-alloy, high tensile steels where welds of 100 ksi (690 MPa) minimum tensile strength are required.
Atom Arc 10018-MM electrodes are used to weld low-alloy, high-tensile steels where welds of 100 ksi (690 MPa) minimum tensile strength is required. This electrode is recommended for use in the weld repair and fabrication of Mn-Mo steel castings and armor plate.

| Stress Relieved 1 hr. @ 1150ºF (621ºC) | |
|---|---|
| Yield Strength | 93 ksi, 640 MPa |
| Tensile Strength | 104 ksi, 715 MPa |
| Reduction in Area | 68 |
| Elongation in 2" | 24 % |
| Typical Charpy V-Notch Impact Properties | |
| Testing Temperature -60ºF (-51ºC) | |
| Stress Relieved 1 hr. @ 1150ºF (621ºC) | 24 ft.-lbs., 35 J |
| Typical Undiluted Weld Metal Analysis | |
| C | .082 % |
| Mn | 1.82 % |
| Si | 0.33 % |
| P | .015 % |
| S | .011 % |
| Mo | .37 % |
| Part No. | Model / Product Description | UPC |
|---|---|---|
| 255091415 | AA 10018-MM 1/4X18X50#HS | 662303017712 |
| 255091811 | AA 10018-MM 1/8X14X50#HS | 662303017736 |
| 255093114 | AA 10018-MM 3/16X14X50#HS | 662303017750 |
| 255095317 | AA 10018-MM 5/32X14X50#HS | 662303017774 |
| 255097313 | AA 10018-MM 7/32X18X50#HS | 662303017798 |
| 255097339 | AA 10018-MM 3/32X14X50#HS | 662303017804 |
| 255091829 | AA 10018-MM 1/8X14X10#HS | 662303017743 |
| 255093122 | AA 10018-MM 3/16X14X10#HS/60CT | 662303017767 |
| 255095325 | AA 10018-MM 5/32X14X10#HS/60CT | 662303017781 |
| Diameter | Optimal Amperage | Range Amperage | Deposition Rate | Efficiency |
|---|---|---|---|---|
| 3/32 in, 2.4 mm | 90 A | 70 - 100 | 1.7 lbs./hr., 0.8 kg./hr. | 66.3 % |
| 1/8 in, 3.2 mm | 120 A | 90 - 160 | 2.6 lbs./hr., 1.2 kg./hr. | 71.6 % |
| 140 A | 90 - 160 | 2.7 lbs./hr., 1.2 kg./hr. | 70.9 % | |
| 5/32 in, 4.0 mm | 140 A | 130 - 220 | 3.1 lbs./hr., 1.4 kg./hr. | 75 % |
| 170 A | 130 - 220 | 3.8 lbs./hr., 1.7 kg./hr. | 73.5 % | |
| 3/16 in, 4.8 mm | 200 A | 200 - 300 | 4.9 lbs./hr., 2.2 kg./hr. | 76.4 % |
| 250 A | 200 - 300 | 5.4 lbs./hr., 2.4 kg./hr. | 74.6 % | |
| 7/32 in, 5.6 mm | 250 A | 250 - 350 | 6.5 lbs./hr., 2.9 kg./hr. | 75 % |
| 300 A | 250 - 350 | 7.2 lbs./hr., 3.3 kg./hr. | 74 % | |
| 1/4 in, 6.4 mm | 300 A | 300 - 400 | 7.7 lbs./hr., 3.5 kg./hr. | 78 % |
| 350 A | 300 - 400 | 8.7 lbs./hr., 3.9 kg./hr. | 77 % |
Preheat should be used on hardenable steels to prevent the formation of a hard heat-affected zone. Preheat may also be required in welding heavy sections
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.