OBRABOTKAMETALLOV Vol. 26 No. 2 2024 technology Ta b l e 4 Chemical composition of weld overlaid metal with TMU-21U electrodes, ESAB Indicator name ND value Actual value Accuracy ND for test methods Carbon, wt. % 0.09 0.09 0.016 GOST 22536.1–89 Silicon, wt. % 0.30 0.29 0.03 GOST 28033–89 Manganese, wt. % 0.85 0.80 0.04 GOST 28033–89 Phosphors, wt. % max 0.030 0.022 0.003 GOST 28033–89 Sulfur, wt. % 0.009 0.012 0.004 GOST 28033–89 Ta b l e 5 Mechanical properties of weld overlaid metal with TMU-21U electrodes, ESAB No. Indicator name The value according to GOST 380–2005 Actual value ND for test methods 1 Yield strength σ0.2, N/mm2 ≥235 205, 265, 249 GOST 1497–84 2 Ultimate tensile strength σu, N/mm2 360–460 346, 378, 440 3 Ultimate elongation δ, % ≥27 24, 24, 28 4 Impact toughness KCU, J/cm2 ≥49 49, 51, 50 GOST 9454–78 Ta b l e 6 Chemical composition of weld overlaid metal with electrodes TMU-21U, “Sudislavsky Welding Materials Plant”, LLC Indicator name ND value Actual value Accuracy ND for test methods Carbon, wt. % 0.08 0.12 0.016 GOST 22536.1–89 Silicon, wt. % 0.28 0.54 0.03 GOST 28033–89 Manganese, wt. % 0.82 1.37 0.04 GOST 28033–89 Phosphors, wt. % 0.023 0.013 0.003 GOST 28033–89 Sulfur, wt. % 0.009 0.011 0.004 GOST 28033–89 Ta b l e 7 Mechanical properties of weld overlaid metal with electrodes TMU-21U, “Sudislavsky Welding Materials Plant”, LLC No. Indicator name The value according to GOST 380-2005 Actual value ND for test methods 1 Yield strength σ0.2, N/mm2 ≥235 225, 285, 260 GOST 1497–84 2 Ultimate tensile strength σu, N/mm2 360–460 315, 395, 390 3 Ultimate elongation δ, % ≥27 21, 21, 25 4 Impact toughness KCU, J/cm2 ≥49 45, 42, 50 GOST 9454–78
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