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COATING TYPE - Basic

ГОСТ 9466 — 75 Э 50А –ЦУ-5-Ø-УД
Е 51 3(0) — Б20

ТУ У 25.9-34142621-011:2015

ОСТ 24.948.01

AWS A5.1: E7015

PURPOSE AND FIELD OF APPLICATION

Electrodes CU-5 are designed for welding of elements of the boiler generator heating surfaces as well as root passes, joints of thick-walled pipelines made of carbon and low-alloy silicon-manganese steels with tensile strength of no lower than 490 MPa operating at the temperature of up to 400°С. 

APPLICATION CONDITIONS

Welding should be done using reversed polarity direct current, (+) on the electrode. Welding with electrodes CU-5 should be done without preliminary heating and subsequent heat treatment on the short arc length over the cleaned edges.

REDRYING BEFORE WELDING

If storing at normal conditions redrying is not required. When moisturized redrying required at: 360± 20°C / 120-150 min.

Moisture content in the coating should not exceed 0,7%.

 

CHEMICAL COMPOSITION OF DEPOSITED METAL, %

 

Mn Si C P S
1.0-1.6 0.2-0.5 0.06-0.12 ≤ 0.035 ≤ 0.030

 

MECHANICAL PROPERTIES OF WELD METAL

Tensile strength, MPa Elongation, % Impact strength, J/сm² + 20 ˚С
≥ 510 ≥ 20 ≥ 137

Recommended current: DC reverse (“+” on electrode).

 

PACKAGING DATA

 Diameter, mm Length, mm Welding current, A Units per package, pcs Weight of packing, kg
2.5 300 65-90 55-58; 111-116 1; 2

 

WELDING POSITIONS

PA PB PC PF

 

PE PD

ДСТУ EN ISO 6947

 

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