A212
Description:
A212 is Cr18Ni12Mo2Nb stainless steel electrode with Nb stabilizer containing titanium calcium type coating. The deposited metal than A202, A207 has better resistance to intergranular corrosion. Have excellent operating performance, AC and DC can be used.
use:
For the important 06Cr17Ni12Mo2,022Cr17Ni12Mo2 other stainless steel welding, such as urea synthesis tower, vinylon equipment contact with corrosive media such as the workpiece.
Deposited metal chemical composition (%)
| C | Mn | Si | S | P | Cr | Ni | Mo | Cu | Nb + Ta |
guarantee value | ≤0.080 | 0.50 ~ 2.50 | ≤1.00 | ≤0.030 | ≤0.040 | 17.0 ~ 20.0 | 11.0 ~ 14.0 | 2.0 ~ 3.0 | ≤0.75 | 6 × C ~ 1.00 |
Example value | 0.045 | 0.95 | 0.70 | 0.010 | 0.022 | 19.20 | 11.93 | 2.40 | 0.11 | 0.45 |
Deposited metal mechanical properties
Pilot projects | Rm (N / mm 2 ) | A (%) |
guarantee value | ≥550 | ≥20 |
Example value | 600 | 39 |
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 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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