Stainless 19-9DL

Annealing Procedure

Soak at 1800-2150 F, air cool. For stress relieving, heat to 1200 F (649 C), hold for 60 minutes and air cool.

Applications

Applications include a wide variety of jet engine components including casings, manifolds, buckets and fasteners. Generally employed in applications where resistance to intergranular corrosion is not a great concern.

Cold Workability

This alloy can be successfully formed using most common practices. If severe forming is employed the material should be stress relief annealed immediately after forming at 1200-1300 F.

Forgeability

Soak thoroughly at 2150 F prior to working, air cool forgings. Given sufficient hammer strength, this material can be forged down to 1250 F.

Hardening Procedure

This material will not respond to hardening by thermal treatment.

Heat Treatability

This alloy is austenitic and will not respond to heat treatment.

Hot Workability

This material can be successfully forged, headed and upset.

Machinability

Experienced machinists compare the characteristics of this material to those of 316 stainless. Constant feeds, slow speeds and ample sulphurized lubricants are necessary for optimum results. The material will produce tough, "gummy" chips. The use of chip breakers or curlers will effectively deal with this problem.

Principle Design Features

This alloy is primarily an austenitic stainless steel which combines fine grain and stability in a wide range of temperatures with good resistance to both corrosion and brittle failure.

Weldability

This alloy can be successfully welded using all commonly employed techniques. When required, filler metal should be of matching chemistry for optimum performance.