Based on our previous discussion of the solution treatment process for hot runner stainless steel bolts and the characteristics of 304/316 material, the core performance changes of bolts after solution treatment are as follows:
Significantly Reduced Hardness: Internal stress is completely eliminated, and the hardness of 304/316 material stabilizes below HB187, preventing brittle fracture during installation.
Greatly Improved Corrosion Resistance: Carbides precipitated at grain boundaries are completely dissolved, thoroughly avoiding intergranular corrosion, making it suitable for injection molding scenarios containing corrosive raw materials.
Enhanced High-Temperature Stability: A uniform single-phase austenitic structure is obtained, making it less prone to creep loosening during long-term operation below 250℃, suitable for the high-temperature conditions of hot runner systems.
Improved Plasticity and Toughness: The material's ductility improves, allowing it to withstand greater uniform deformation during installation and reducing the probability of thread stripping.
These performance changes perfectly match the application requirements of hot runner bolts, significantly improving long-term operational reliability.
