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E309L-16
Application
Commonly used for dissimilar welding between carbon steel and stainless steel, surfacing of transition layers on the inner walls of petrochemical reactors, welding of low-toughness martensitic/ferritic stainless steels, and joining of similar materials.
C |
Mn |
Si |
Cr |
Ni |
Mo |
P |
S |
Cu |
|
Guaranteed Value |
1.00-2.50 |
23.00-25.00 |
12.00-14.00 |
||||||
Typical Value |
0.026 |
1.74 |
0.58 |
23.49 |
12.9 |
_ |
0.024 |
0.008 |
_ |
Deposited Metal Chemical Composition （%）
C |
Mn |
Si |
Cr |
Ni |
P |
S |
|
Typical Value |
0.030 |
1.47 |
0.60 |
23.50 |
13.00 |
0.021 |
0.008 |
Deposited Metal Mechanical Properties
Test Item |
Tensile Strength Rm(N/mm2) |
Elongation A(%) |
|
Typical Value |
558 |
40 |
Recommended Current(AC+,DC+)
Diameter(mm) |
Φ2.5 |
3.2 |
4.0 |
5.0 |
Welding Current(A) |
400-500 |
450-550 |
500-600 |
550-650 |
Precautions
1. Interpass Temperature: Maintain the interpass temperature at approximately 150°C. For multi-pass welding, carefully control the welding heat input.
2. Pre-Cleaning: Thoroughly remove rust, moisture, oil, dust, and other contaminants from the weld joint.
3. Flux Baking: Bake the flux at 300–350°C for 2 hours before use.
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