TensileStrength Rm(MPa)ElongationA(%)AkvValue(J) CHL107Lowhydrogen sodiumE7015-GF,V, OH,HDC+__ 0.04≥1.00 0.45≥0.80 0.18≤0.03 0.007≤0.03 0.012≥0.30 0.20≥0.50 3.20≥0.20 0.21≥0.10 0.11≥0.20 0.30≥390 430≥490 530≥22 30__ -100℃80Forweldingstructuresmadeby3.5Nilowalloysteel,whichworktemperatureisabout-100℃. CHL607Lowhydrogen sodiumE7015-GF,V, OH,HDC+__ 0.05≥1.00 1.02≥0.80 0.40≤0.03 0.009≤0.03 0.015≥0.30 0.23≥0.50 1.84≥0.20 0.20≥0.10 0.13≥0.20 0.23≥390 430≥490 540≥22 30__ -60℃110Forweldingstructuresmadeby09MnDlowalloysteel,whichworktemperatureisaround-60℃. CHL608IronpowderlowhydrogenpotassiumE8018-C1F,V, OH,HAC≥70V orDC+≤0.12 0.075≤1.25 1.00≤0.80 0.056≤0.03 0.010≤0.03 0.016?2.00-2.75 2.20???≥460 520≥550 630≥19 25-60℃≥27 85Forweldingstructuresmadeby2.5Nilowalloysteel,whichworktemperatureisabout-60℃. CHL707Lowhydrogen sodiumE7015-GF,V, OH,HDC+__ 0.055≥1.00 1.00≥0.80 0.51≤0.03 0.007≤0.03 0.014≥0.30 0.23≥0.50 2.48≥0.20 0.24≥0.10 0.14≥0.20 0.28≥390 500≥490 590≥22 28__ -70℃80Forweldingstructuresmadeby2.5Nilowalloysteel,whichworktemperatureisaround-70℃. CHL708IronpowderlowhydrogenpotassiumE7018-GF,V, OH,HAC≥70V orDC+__ 0.04≥1.00 0.50≥0.80 0.28≤0.03 0.015≤0.03 0.012≥0.30 0.11≥0.50 2.40≥0.20 0.14≥0.10 0.11≥0.20 0.27≥390 435≥490 525≥22 25__ -70℃100Forweldingstructuresmadeby2.5Nilowalloysteel,whichworktemperatureisaround-70℃. CHL708C2IronpowderlowhydrogenpotassiumE8018-C2F,V, OH,HAC≥70V orDC+≤0.12 0.033≤1.25 0.76≤0.80 0.33≤0.03 0.005≤0.03 0.013?3.00-3.75 0.26???≥460 530≥550 630≥19 22-75℃≥27 75Forwelding3.5NilowtempreturealloysteelandtheweldmetalshowsasatisfactoryAkvvalueattempreturearound-70℃. CHL807Lowhydrogen sodiumE7015-GF,V, OH,HDC+__ 0.045≥1.00 0.60≥0.80 0.27≤0.03 0.015≤0.03 0.012≥0.30 0.24≥0.50 1.80≥0.20 0.22≥0.10 0.10≥0.20 0.23≥390 440≥490 530≥22 30__ -80℃100Forweldingstructuresmadeby1.5Nilowalloysteelwhichworktemperatureisaround-80℃.