The 10018-SR+ electrode is designed to meet NACE MR0175 requirements of <1% Ni and max 22 HRc (equivalent 248 Vickers) with stress relief cycles up to twelve hours. This electrode also meets and may be classified as AWS 5.5 10018-D2. Common steels utilizing the 10018-SR+ include F22, 4130, 8630, and similar Q&T Steels.