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低温钢焊条 Welding Rods for Low Temperature Service Steel 低温钢焊条 Item Code Type of Covering AWS A5.5 Welding Position Type of Current Standard & Typical Chemical Composition of Deposited Metal (%) Standard & Typical Mechanical Properties of Deposited Metal Applications C Mn Si S P Cr Ni Mo V Cu Yield Point ReL (MPa) Tensile Strength Rm (MPa) Elongation A (%) Akv Value (J) CHL107 Low hydrogen sodium E7015-G F,V, OH,H DC+ __ 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℃ 80 For welding structures made by 3.5Ni low alloy steel, which work temperature is about -100℃. CHL607 Low hydrogen sodium E7015-G F,V, OH,H DC+ __ 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℃ 110 For welding structures made by 09MnD low alloy steel, which work temperature is around -60℃. CHL608 Iron powder low hydrogen potassium E8018-C1 F,V, OH,H AC≥70V or DC+ ≤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 85 For welding structures made by 2.5Ni low alloy steel, which work temperature is about -60℃. CHL707 Low hydrogen sodium E7015-G F,V, OH,H DC+ __ 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℃ 80 For welding structures made by 2.5Ni low alloy steel, which work temperature is around -70℃. CHL708 Iron powder low hydrogen potassium E7018-G F,V, OH,H AC≥70V or DC+ __ 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℃ 100 For welding structures made by 2.5Ni low alloy steel, which work temperature is around -70℃. CHL708C2 Iron powder low hydrogen potassium E8018-C2 F,V, OH,H AC≥70V or DC+ ≤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 75 For welding 3.5Ni low tempreture alloy steel and the weld metal shows a satisfactory Akv value at tempreture around -70℃. CHL807 Low hydrogen sodium E7015-G F,V, OH,H DC+ __ 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℃ 100 For welding structures made by 1.5Ni low alloy steel which work temperature is around -80℃.