Instruction and Application: Low-sodium type coating of low alloy heat-resistant steel electrode, excellent welding technology, all-position welding. Welded joints of high strength, less than 600 ℃ good oxidation resistance, high temperature strength and creep resistance and fatigue resistance with excellent performance and operating characteristics of an electrode, and suitable for field installation and construction. Deposited metal purity, impurities such as s and p is extremely low, S≤0.10%, P≤0.12%. Meet the requirements of GB/T 5118 E5515-1CMV project.

Applicable in petrochemicals, coal chemical, thermal and harsh conditions, corrosion medium chromium-molybdenum-vanadium Pearlite heat-resistant steel for large, complex equipment (1Cr-0.5Mo-0.25V) welded steel plate.

Typical Chemical Composition of the all-welded metal(％)

X-factor = (10P+5Sb+4Sn+As) *10^-2

2Element type to ppm content into, such as 0.01% should be 100ppm into

Mechanical properties of all-weld metal

*In practice, the heat treatment system shall be formulated separately by the supply and demand parties or by the conditions of the working conditions (such as the thickness of the specimen).

H_D (Mercury method): ≤5.0ml/100g

Deposited metal radio-graphic testing:

According to NB / T 47013.2, the radio-graphic detecting technique should not be less than class AB and the quality grade of deposited metal should not be less than Class I.

Reference current (DC+):

Notice：

1. Redry the electrode at 350~400°C for 1~2hour.

2.Cleaning the oil stain, rust and moisture of the weldment surface before welding.

3.Operate with short arc and narrow bead welding method, preheating temperature about 150°C, the temperature between different welding bead should be controlled to 150~300°C.