EN10025 S355J0 steel plate welding performance and heat treatment requirements in detail

Welding performance and heat treatment requirements are two important aspects of EN10025 S355J0 steel plate:

1. Welding performance:
- Welding methods: Conventional welding methods such as arc welding, gas shielded welding, submerged arc welding, etc., are applicable to S355J0 steel plate.
- Preheating and control: In the case of large thicknesses or high-strength connections, preheating may be required. Control temperature and speed during welding to ensure weld quality.
- Welding materials: Select the appropriate wire and flux to ensure compatibility with the substrate and good welding performance.
- Follow-up treatment: Heat treatment or heat tempering if necessary to relieve stress and improve the performance of the welded joint.

2. Heat treatment requirements:
- Normalizing treatment: Under normal circumstances, EN10025 S355J0 steel plate usually does not require normalizing treatment. If you need to increase hardness or improve some specific properties, you can consider normalizing treatment.
- Quenching and tempering: For some special engineering requirements, EN10025 S355J0 steel plate can be quenched and then tempered to achieve the required strength and toughness requirements.
- Annealing: In some cases, annealing can reduce stress, improve processing properties and microstructure.
- Post-welding heat treatment: Heat treatment of welded joints to eliminate residual stress caused by welding and improve overall performance and stability.

Comprehensive consideration of welding performance and heat treatment requirements can ensure that S355J0 steel plate has superior performance and reliability in various engineering applications.