A412
Description:
A412 is titanium calcium type Cr26Ni21Mo2 pure austenitic stainless steel electrode. As the addition of Mo deposited metal, so corrosion resistance, heat resistance, crack resistance than A402, A407 have improved. AC and DC dual-use, operating process performance is good.
use:
For welding at high temperature work heat-resistant stainless steel, can also be used to weld stainless steel lining, dissimilar steel. High toughness in the welding of high carbon steel, low alloy steel toughness.
Deposited metal chemical composition (%)
| C | Mn | Si | S | P | Cr | Ni | Mo | Cu |
guarantee value | ≤0.12 | 1.00 ~ 2.50 | ≤0.75 | ≤0.030 | ≤0.030 | 25.0 ~ 28.0 | 20.0 ~ 22.0 | 2.0 ~ 3.0 | ≤0.75 |
Example value | 0.075 | 1.72 | 0.67 | 0.008 | 0.022 | 26.15 | 20.68 | 2.46 | 0.10 |
Deposited metal mechanical properties
Pilot projects | Rm (N / mm 2 ) | A (%) |
guarantee value | ≥550 | ≥28 |
Example value | 630 | 39 |
Reference current (AC, DC + )
Electrode diameter (mm) | φ 2.0 | φ 2.5 | φ 3.2 | φ 4.0 | φ 5.0 |
Welding current (A) | 40 ~ 80 | 50 ~ 100 | 70 ~ 130 | 100 ~ 160 | 140 ~ 200 |
Precautions:
1. Before welding electrode to be baked at 300 ℃ 1h.
2. As far as possible the use of DC power supply, the current should not be too large.
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