A242
Description:
A242 is a titanium-calcium type Cr19Ni13Mo3 stainless steel electrode with a higher Mo content than A202. It has good corrosion resistance to non-oxidizing acids (such as sulfuric acid, sulfurous acid and phosphoric acid) and organic acids. For pitting resistance also has a good effect, can be AC ??and DC.
use:
For the same type of stainless steel and composite steel, dissimilar steel welding.
Deposited metal chemical composition (%)
| C | Mn | Si | S | P | Cr | Ni | Mo | Cu |
guarantee value | ≤0.080 | 0.50 ~ 2.50 | ≤0.90 | ≤0.030 | ≤0.040 | 18.0 ~ 21.0 | 12.0 ~ 14.0 | 3.0 ~ 4.0 | ≤0.75 |
Deposited metal mechanical properties
Pilot projects | Rm (N / mm 2 ) | A (%) |
guarantee value | ≥550 | ≥20 |
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:
1. Before welding electrode to be about 300 ℃ baking 1h.
2. As far as possible the use of DC power supply, the current should not be too large.
related articles
The number of clicks:Update time:2017/12/27 14:49:32【print this page】