E9018M
Alloy Type: A5.5, LOW ALLOY STEEL Covered Arc Welding Electrodes
E9018-M is an electrode used for welding higher strength steels when tensile strength in excess of 90 ksi is required. The coating on this electrode is specially formulated to resist moisture pick-up in conditions of high heat and humidity. It’s resistance to moisture reabsorption also helps prevent hydrogen cracking and aids in elimination of starting porosity.
Typical Applications: joining HY-90, HY-80, T-1 and other high tensile steels
AWS Class: E9018-M H4R | Certification: AWS A5.5/A5.5M:2006 |
Alloy: E9018-M | ASME SFA A5.5 |
Welding Position: F, V, OH, H | Current:
AC-DCEP |
Tensile Strength, kpsi: | 90 |
Yield Strength, kpsi: | 78-90* |
Elongation %: | 24 |
* For 3/32” electrodes, the upper value for the yield strength may be 5 kpsi higher
Typical Wire Chemistry as per AWS A5.5 (single values are maximum)
C | Mn | Si | P | S | Ni | Cr | Mo | V |
0.10 | 0.60-1.25 | 0.80 | 0.030 | 0.030 | 1.40-1.80 | 0.15 | 0.35 | 0.05 |
Typical Welding Parameters | |||
Diameter | Process | Amps | |
in | (mm) | ||
3/32 | (2.4) | SMAW | 70-110 |
1/8 | (3.2) | SMAW | 90-160 |
5/32 | (4.0) | SMAW | 130-210 |
3/16 | (4.8) | SMAW | 180-300 |