A312
Description:
A312 is a titanium calcium type Cr23Ni13Mo2 stainless steel electrode. Due to the high Mo content in the weld, it has better corrosion, cracking and oxidation resistance than A302. AC-DC dual-use, with good operating performance.
use:
For welding sulfuric acid resistant medium (sulfur ammonia) corrosion of the same type of stainless steel containers, but also for stainless steel lining, composite steel, dissimilar steel welding.
Deposited metal chemical composition (%)
| C | Mn | Si | S | P | Cr | Ni | Mo | Cu |
guarantee value | ≤0.120 | 0.50 ~ 2.50 | ≤1.00 | ≤0.030 | ≤0.040 | 22.0 ~ 25.0 | 12.0 ~ 14.0 | 2.0 ~ 3.0 | ≤0.75 |
Example value | 0.052 | 1.40 | 0.68 | 0.009 | 0.022 | 23.10 | 12.74 | 2.36 | 0.11 |
Deposited metal mechanical properties
Pilot projects | Rm (N / mm 2 ) | A (%) |
guarantee value | ≥550 | ≥25 |
Example value | 615 | 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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