E309L
Description:
E309L is titanium calcium type ultra-low carbon stainless steel Cr23Ni13 stainless steel electrode. Has excellent crack resistance. AC-DC dual-use, can be all-position welding.
use:
Commonly used in stainless steel and other dissimilar steel welding, but also for petrochemical pressure vessels and other equipment transition layer welding.
Deposited metal chemical composition (%)
| C | Mn | Si | S | P | Cr | Ni | Mo | Cu |
guarantee value | ≤0.04 | 0.50 ~ 2.50 | ≤1.00 | ≤0.030 | ≤0.040 | 22.0 ~ 25.0 | 12.0 ~ 14.0 | ≤0.75 | ≤0.75 |
Example value | 0.023 | 1.75 | 0.70 | 0.009 | 0.021 | 23.75 | 13.40 | 0.047 | 0.036 |
Deposited metal mechanical properties
Pilot projects | Rm (N / mm 2 ) | A (%) |
guarantee value | ≥510 | ≥25 |
Example value | 590 | 40 |
Reference current (AC, DC + )
Electrode diameter (mm) | φ2.5 | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 50 ~ 100 | 70 ~ 130 | 100 ~ 160 | 140 ~ 200 |
Precautions:
⒈ welding electrode to be 300 ℃ baking 1h.
⒉ as much as possible the use of DC power supply, the current should not be too large.
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