CarTech 416 Project 70+ Stainless is an improved modification of CarTech No. 5 stainless, the first free-machining stainless steel. Customers reported that this grade has significantly better machinability than the conventional Type 416, including the following characteristics:

1. 100 to 200% longer tool life.
2. 15% faster machining speeds.
3. Improved finishes.

The low frictional properties of CarTech 416 Project 70+ stainless have minimized scratching and galling in service. Threaded sections have worked freely without seizing and disassembly was particularly easy because of the absence of corrosion in the threads. Pump shafts and valve stems worked more smoothly in packing, and many metal-to-metal contacts withstood more pressure without seizing. This product meets most industry specifications for type 416.

This grade is available in machining bar stock in the Annealed Condition (A), and also Mill Treated in the Intermediate Temper Condition (T), and Hard Temper Condition (H). The Mill Treated Conditions may be utilized to eliminate piece part heat treatment if piece part hardness requirements are compatible with treated barstock hardness ranges. Where corrosion resistance is required, treated CarTech Project 70+ Type 416 stainless may be considered as a replacement for Mill Treated carbon steel grade 1144.

CarTech 416 Project 70+ PDB® stainless combines the superior machinability of CarTech Project 70+ stainless with improved straightness and half-standard dimensional tolerances. This precision drawn bar has been used successfully in a variety of machining operations including CNC Swiss-type screw machines.

Applications:
The uses of CarTech 416 Project 70+ Stainless have included fittings, gears, housings, lead screws, shafts, valve bodies, valve stems, and valve trim. It may be considered for parts requiring considerable machining.

This alloy possesses better nongalling properties than Type 410, making disassembly of parts easy and helping to avoid scratching or galling in moving parts.

It is not recommended for vessels containing gases or liquids under high pressures.