Instruction and Application: Low hydrogen type electrode of low alloy heat - resistant Steels welding electrodes, and have good fatigue cracking of welded joint performance of their excellent comprehensive Mechanical Properties of Welded Joints, welding operation is good, suitable for field installation and construction, in line with the requirements of AWS A5.5 E8016-B2 related projects.Compared with ordinary heat - resisting steel welding material, has the following features :

1. Appropriate to reduce the intensity of the Welding Material scope is matched with base metal, the yield is about 100-110% of the base metal.

2. The deposited metal of pure, very low content of impurities such as S, P, S≤0.008, P≤ 0.010.

3. Excellent low temperature toughness of deposited metal, KV₂ ( J,-20 )≥54J.

4. Excellent resistance to tempering embrittlement of weld metal, the X Factor is very low.

Designed specifically for hydrogenation and coking oil refinery engineering ASME SA387 Gr. 12 Class 1 steel plate welding.

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.