Application Notes for TP904L

The processing Mechanical properties

1.1 and general stainless steel welding performance as, 90 4 L can use a variety of welding welding. The most common way for manual arc welding or inert gas welding, metal welding rod or wire based on the composition and purity of the base metal higher molybdenum content requirements than the base metal. Warm-up before welding is generally not required, but in the cold outdoor work, in order to avoid condensation of water vapor, or near the region of joints can be used for uniform heating. Note that the local temperature should not exceed 10 0 ℃, so as not to cause the carbon concentration, causing intergranular corrosion. Welding should be adopted when a small line of energy, continuous and fast welding speed. Post-weld heat treatment is generally not required, for the heat treatment must be heated to 110 0 ~ 1150 ℃ after rapid cooling.

1.2 90 4 L machining performance characteristics similar to other machining austenitic stainless steel, tool processing viscous and hardening trend. To adopt the positive rake angle carbide cutting tools to sulfide and chlorinated cutting oil as a coolant, equipment and technology should be to reduce the work hardening as a precondition. Cutting process should avoid using slow cutting speed and feed amount.