Welding Electrodes For Low Alloy Steel

 

Item Name

HD8018B2

HD 9018B3

HD 502

HD 505

classification

AWS

E 8018-B2

AWS

E 9018-B3

AWS

E 502-15

AWS

E 505-15

Welding position

F , V , OH , H

F , V , OH , H

F , V , OH , H

F , V , OH , H

Type of current

DC +

AC , DC +

DC +

DC +

Standard&Typical Chemical Composition of Deposited Metal (%)

C

0.05-0.12

0.07

0.05-0.12

0.072

≤0.12

-

≤0.16

Mn

≤0.90

0.70

≤0.90

0.65

0.50-0.90

-

0.50-1.00

Si

≤0.80

0.40

≤0.80

0.15

≤0.50

-

≤0.50

S

≤0.035

0.010

≤0.030

0.012

≤0.030

-

≤0.030

P

≤0.035

0.20

≤0.030

0.010

≤0.035

-

≤0.035

Cr

080-1.50

1.20

2.00-1.50

1.20

4.50-6.00

-

8.50-10.0

Mo

0.40-0.65

0.50

0.40-0.65

0.50

0.40-0.70

-

0.70-1.00

V

-

-

0.10-0.35

-

-

 

-

-

Cu

≤ 0.50

Cu

≤ 0.50

Standard&Typical Mechanical Properties of Deposited Metal

Yield point

≥440

500

≥530

560

-

-

Tensile Strength

≥540

600

≥620

655

≥540

-

≥590

-

Elongation

≥17

23

≥17

22

≥14

-

≥16

-

AKv Value (J)

-

28 Cº

≥27

-

-

Applications

For welding low alloy CrMo steel structures which work temperature is below 520 Cº such as boiler pipes , petroleum thermal cracking equipments , etc .

Suitable for fabricating equipments of chemical and petroleum industries as well as high temperature, high pressure pipes , which is fabricating by Cr2.5Mo low alloy and work temperature lower than 550ºC

Welding of cr-Mo pearlitic steels working temperature is below 620 ºC

Welding of Cr9Mo stainless steel structure for transmission of heat

 
 

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