How do you heat treat 17-4 to H900?

How do you heat treat 17-4 to H900?

Preferred temperature range for hot forming is at 650-900°F, while the steel is still austenitic. To ensure the best condition for the hardening operations, the forgings must be re-heat treated at 1875-1925°F. Cool forgings to below 90°F to ensure grain refinement.

Will 17-4PH rust?

The high strength of type 17-4 PH stainless steel makes it a great construction material for piping at such depths. Second, Type 17-4 PH alloy is resistant to corrosion both on and offshore.

Can you machine 17-4 H900?

Machining: Machining 17-4PH Condition A has machining characteristics similar to stainless grades 302, 304 and 410. The high hardness and strength in Condition H900 is the most difficult to machine and the material should be machined at 60% of the rate used for Condition A.

What is the hardness of 17-4 PH?

Grade 17-4 stainless steel is the most widely used steel of the precipitation hardening grade steels. It has high toughness, strength, and corrosion resistance….Mechanical Properties.

What is H900 heat treatment process?

Typical heat treat designations are H900 or H1075; where H900 indicates aging at 900°F for one hour and H1075 indicates ageing at 1075°F for 4 hours. In all cases, it is important to start with material that is in the solution treated condition or more commonly called Condition A.

What material group is 174ph?

Alloy 17-4PH (UNS S17400), Type 630, is a chromium-nickel-copper precipitation-hardening martensitic stainless steel with an addition of niobium.

What does H900 mean?

How to heat treat 17-4 PH (AMS 5643) h1025?

So for 17-4 PH (AMS 5643) H1025, we will have to heat treat them at 1900F +/-25 (In Endothermic gas furnace) and fast cool to <90F (Air Cool). Then put them in the draw at 1025F for about 4 hours?

Can 17-4 PH be used in solution treated condition?

Scaling and distortion is minimized. 17-4 PH should not be used in the solution treated condition. The strength and corrosion resistance properties of 17-4 hold up well is service temperatures up to 800° F. Fabrication techniques for this steel is similar to those established for the regular stainless grades.

Does heat treatment affect dendritic microstructure of AM 17-4 PH steel?

The recommended stress relief heat treatment currently employed in industry for post processing of AM 17-4 PH steel is found to have little effect on the as-built, dendritic microstructure.

How do I heat heat treat 17-4PH stainless steel components?

Heat slowly and uniformly to 1180-1200ºC. Do not forge below 1010ºC. Hold at temperature for one hour prior to forging the component. Cool in air to room temperature. Forged components require solution annealing before any further heat treatment. Corrosion Resistance 17-4PH stainless has very good corrosion resistance properties.