Machinability and Weldability
Machinability is rated at 45% of B1112. Average cutting speed 75 ft/min. Easily welded by all commercial processes except forge or hammer welding. The resultant weld has good toughness and ductility. Annealing is recommended after forging to maintain maximum corrosion resistance. 304/304L can be forged between 2100°-2350° F. Do not forge below 1700° F.
Tolerances
Stainless Steel Pipe Tolerances
Nominal Pipe Size Welded A312
1/4 to 1-1/2 IPS +.015/-.031
2 to 4 IPS +.031/-.031
5 to 8 IPS +.093/-.031