A302
Description:
A302 is a titanium calcium type Cr23Ni13 stainless steel electrode coating, the deposited metal has good crack resistance and oxidation resistance. AC-DC dual-use, with good operating performance.
use:
For welding the same type of stainless steel, stainless steel lining, dissimilar steel (Cr19Ni9 with low carbon steel) and high-chromium steel, high manganese steel.
Deposited metal chemical composition (%)
| C | Mn | Si | S | P | Cr | Ni | Mo | Cu |
guarantee value | ≤0.15 | 0.50 ~ 2.50 | ≤1.00 | ≤0.030 | ≤0.040 | 22.0 ~ 25.0 | 12.0 ~ 14.0 | ≤0.75 | ≤0.75 |
Example value | 0.055 | 1.45 | 0.70 | 0.009 | 0.021 | 24.25 | 12.75 | 0.35 | 0.10 |
Deposited metal mechanical properties
Pilot projects | Rm (N / mm 2 ) | A (%) |
guarantee value | ≥550 | ≥25 |
Example value | 595 | 40 |
Reference current (AC, DC + )
Electrode diameter (mm) | φ2.0 | φ2.5 | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 40 ~ 80 | 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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