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- E-BK 309 MoL-16
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Stainless Steel Welding Electrode E BK 309MoL-16
E 309MoL-16 This molybdenum-bearing stainless steel alloy, is especially suitable for joining all difficult to weld steels to themselves or to stainless steel, or for joining dissimilar stainless steels. The addition of Molybdenum provides higher corrosion resistance, higher strength, and creep resistance at elevated temperatures. When welding low and unalloyed steels, a weld good with high corrosion resistance is already obtained in the first layer. The deposited metal is resistant to hot cracking and is practically spatter and porosity free. Slag release is excellent, and weld pool control is easy to obtain. The welded deposit is heat resistant up to 1.050°C. (1.922°F).
Applications
joining of dissimilar steels. Welding of plated steels. For saltwater and pit type corrosive applications. Welding of CrNiMo stainless steels. Chemical, petrochemical, and food industry applications. Underlayer for stainless steel coatings. Do not use on applications that are continuously submitted to temperatures between 600 and 900°C.
Designed with low carbon levels to help eliminate carbide precipitation in high temperature service
Classification
AWS
AWS A5.4 : E309MoL-16
EN ISO
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DIN
-------Typical Weld Metal Analysis %
| C | Mn | Mo | Cr | Ni | Si | P | S | F |
| 0.03% | 0.6-1.2% | 2-2.5% | 22.5-23.5 | 9% | 1% | <0.025% | <0.025% | Bal. |
Mechanical Properties (As Welded)
| RP0,2
(N/mm2) |
Rm
(N/mm2) |
A
(%) |
Impact Energy Charpy V notch (ISO-V) |
| 350 | >650 |
>30 |
60 J (20°C) |
General Information
Welding process
Covered Electrode (SMAW)
Alloy Type
High alloyed steel
Re-drying Temperature
300°C/2hours
Welding Position
All, except vertical down.
Cleaning
Remove all cracks and fatigued metal by grinding.
Welding parameters
| Diameter & Length (mm) |
Current (A) |
| 2.5x300 |
70~80 |
| 3.2x300 |
90~120 |
| 4.0x350 |
120~150 |