Compare ER80S-B2 TIG and MIG welding by control, deposition rate, shielding, joint type, automation, and Cr-Mo fabrication requirements.
ER80S-B2 is available for TIG and MIG welding of compatible 1.25Cr-0.5Mo steels. The better process depends on the joint and production environment.
When Is TIG Preferred?
TIG offers precise control and is commonly selected for:
- Root passes
- Boiler and process piping
- Thin-wall components
- Repairs
- Small-diameter pipe
- Work requiring clean, controlled welds
TIG has a lower deposition rate but gives the welder strong control over penetration and filler addition.
When Is MIG Preferred?
MIG may be selected for:
- Longer seams
- Shop fabrication
- Mechanized welding
- Thicker sections
- Higher deposition requirements
- Repetitive production
It requires stable wire feeding, correct shielding gas, and qualified transfer mode.
Do TIG and MIG Need the Same Heat Treatment?
The applicable preheat, interpass, and PWHT requirements come from the base material, code, thickness, and WPS. Process differences may alter heat input and qualification variables.
Which Process Gives Better Properties?
Both can produce compliant weld metal under a qualified procedure. Process selection should consider accessibility, productivity, quality requirements, and operator capability.
Dayang Welding supplies ER80S-B2 TIG rods and MIG wire for global Cr-Mo fabrication projects.
