321 adds titanium-stabilized carbides, which have excellent resistance to intergranular corrosion in the range of 430-900℃ and are suitable for welded structures that…
321 is a high-temperature grade of stainless steel. It is a titanium-stabilized austenitic stainless steel with outstanding resistance to intergranular corrosion and high-temperature performance, and is suitable for high-temperature stoves and exhaust systems.
321 adds titanium-stabilized carbides, which have excellent resistance to intergranular corrosion in the range of 430-900℃ and are suitable for welded structures that serve at high temperatures for a long time.
Grade 321 is often used in the following fields and scenarios. Our CNC machining services can provide customized parts for these industries.
321 demonstrates the following core advantages in CNC machining and terminal applications.
The following are the key process points when processing grade 321 to ensure the quality of parts and processing efficiency.
High-toughness cemented carbide coated cutting tools (AlTiN/TiCN) are selected, and the cutting edges are strengthened to resist the work hardening of austenitic stainless steel.
Medium and low cutting speeds, large feed rates, and the depth of cut must exceed the hardened layer to prevent the tool from rotating and rubbing against the hardened layer.
A large flow of coolant directly scour the cutting zone, powerfully expelling heat and chips, and inhibiting work hardening and thermal deformation.
Use soft claws or custom fixtures to prevent surface scratches; The slender shaft parts are used in conjunction with the tool rest to control the tool deflection.
CMM full-size inspection of key fit dimensions; Re-inspection should be conducted after post-treatment such as passivation and electrolytic polishing.
Besides 321, Stainless Steel offers several other grades with different characteristics. Click to view details.
Send your STEP / DWG / PDF drawing and get a detailed quote with free DFM analysis and process recommendations within 2 hours. No minimum order — from 1 piece.
