347 is a niobium-stabilized carbon with excellent resistance to intergranular corrosion and high-temperature strength
347 is a high-temperature welding grade of stainless steel. It is a niobium-stabilized stainless steel that combines high-temperature resistance and welding performance, and is often used in high-temperature pressure-bearing pipelines and energy equipment.
347 is a niobium-stabilized carbon with excellent resistance to intergranular corrosion and high-temperature strength, making it suitable for high-temperature pressure-bearing pipelines, nuclear power accessories and other applications with high reliability requirements.
Grade 347 is often used in the following fields and scenarios. Our CNC machining services can provide customized parts for these industries.
347 demonstrates the following core advantages in CNC machining and terminal applications.
The following are the key process points when processing grade 347 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 347, Stainless Steel offers several other grades with different characteristics. Click to view details.
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