How to Weld 4130 Heat-Treatable Low-Alloy Steel Successfully

The higher levels of carbon, chromium, and molybdenum in these steels make them highly durable and strong, but they are also more susceptible to cracking.

All of these processes can greatly affect the strength of these materials when they are annealed, normalized, quenched, and tempered . Adding flame hardening to these materials can increase their hardness on the outside while preserving their soft interiors.


1. It is important to identify thermotherapy. 2. Filler metals should be selected. 3. Preheat by applying. 4. Welding is performed.

Due to their high levels of carbon, chromium, and molybdenum, these materials are strong and highly hardenable, but also prone to cracking. For filler metals to give or keep up with sufficient mechanical properties, consistently consider the times and temperatures of post-weld warm medicines