Wisconsin Metal Tech

Typical Applications

• Used in a wide variety of applications because of its unique combination of advantages
• Applications include boatshafts, pump shafts, valve gates, plugs, seats, stems and trim, springs, gears, fasteners, chains, mixing equipment, aerospace, applications such as hydraulic actuators, structural components, fasteners, connectors in high pressure systems; cutter blades; racing car parts; and oil field equipment

Machinability

This grade has a machinability rating of 48% in the annealed condition (Condition A), with surface cutting speed of 80 feet per minute. In the overaged condition (H 1150-M), the machinability rating is 76% with surface cutting speed of 125 feet per minute.

Weldability

Readily weldable by all the commerical processes. Preheating and post-heating practices used for the standard hardenable stainless grades are not required.

Corrosion Resistance

The corrosion resistance of 17-4 is superior to that of hardenable straight chromium grades such as T410. It approaches the corrosion resistance of the chromium nickel grades. In many corrosive media it is equal to such grades as Type 302. Corrosion resisting properties will be affected by such conditions as surface finish and aging heat treatment.

Forgeability

Forge between 2050 and 2150 degrees F. Do not forge below 1850 degrees F. Forgings are air cooled to 90 degrees F or lower. Large or intricate forgings should be equalized at some temperature between 1900 degrees F and the forging temperature before air-cooling.