It can definitely be welded, which belongs to welding different steels;
The stainless steel electrode should be selected according to the stainless steel material, and the stainless steel and carbon steel should be welded according to the stainless steel material (Q235 belongs to carbon steel).
There are general principles for welding between different steels:
- Carbon steel is matched with the welding rod according to the strength. If the strength of two carbon steel materials is different, it is generally based on the lower one, such as welding of Q245R and Q345R, J427 welding rod is selected
- If heat-resistant steel is welded with carbon steel, carbon steel is generally selected;
- If carbon steel is welded with stainless steel, stainless steel electrodes such as A302, A312, etc. are generally used.
Common different steel welding:
| Common Steel Grade | Manual arc welding | Submerged Arc Welding | |||
|---|---|---|---|---|---|
| Welding Rod | Welding Wire Copper Number | Flow | |||
| Model | Matching Tag Example | Model | Matching Tag Example | ||
| Q235-A+16Mn | E4302 | J422 | H08 | HO8Mn | HJ401-H08A |
| HJ431 | 20, 20R+16MnR | E4315 | J427 | H08MnA | HJ401-H08A |
| HJ431 | E5015 | ||||
| J507 | Q235-A+0Cr18Ni10Ti | E1-23-13-16 | / | / | / |
| A302 | E1-23-13 Mo2-16 | ||||
| A312 | 20R+OCr18Ni10Ti | E1-23-13-16 | / | / | / |
| A302 | E1-23-13 Mo2-16 | ||||
| A312 | 16MnR+0Cr18Ni10Ti | E1-23-13-16 | / | / | / |
| A302 | E1-23-13 Mo2-16 | ||||
0Cr18Ni10Ti is American standard 321 stainless steel.
As quality is very important, stainless steel electrodes should be used for welding instead of carbon steel electrode.
Of course, welding between different steels is not recommended, because the carburizing reaction will occur at the contact between stainless steel and carbon steel, and the stainless steel will be brittle.
Leakage and explosion accidents are easy to occur when used in low cold or high pressure environments. Please be careful.
