17-4PH Stainless Steel Investment Castings in China

Tongda supplies 17-4PH Stainless Steel Investment Castings in China for a long time.

Specification of 17-4PH Stainless Steel

17-4PH Stainless Steel is a kind of martensitic precipitation-hardening steel. The Chinese specification is 0Cr17Ni4Cu4Nb. Adding Cu element increased the hardening property of the 17-4PH stainless steel.

Casting processes for 17-4PH Stainless Steel Investment Castings

17-4PH Stainless Steel Investment Castings are made in lost wax casting process. The specific technic is silica sol casting process. This process can control the dimension accuracy and surface rough better. Casting tolerance can achieve ISO8062 CT5-CT6.

Heat treatment of 17-4PH Stainless Steel Investment Castings

1.Solution treatment with 1020 ~1060℃, quick cooling.
2.480℃Aging treatment：470~490℃ air cooling after solution treatment.
3.550℃Aging treatment：540~560℃ air cooling after solution treatment.
4.580℃Aging treatment：570~590℃ air cooling after solution treatment.
5.620℃Aging treatment：610~630℃ air cooling after solution treatment.

Machining Processes for 17-4PH Stainless Steel Investment Castings

Some 17-4PH Stainless Steel Investment Castings required for more tight dimension tolerances for assembling purpose. In this way, some 17-4PH Stainless Steel Investment Castings will be machined.  17-4PH is a kind of hard stainless steel. Machining of such investment castings should be more careful with special machining tools.

Surface treatment on 17-4PH Stainless Steel Investment Castings

To protect the surface of 17-4PH stainless steel investment castings and also to longer life time of them, some clients require for surface treatment on them. Mostly used methods are soft anodizing, hard anodizing, and painting.

Application of 17-4PH Stainless Steel Investment Castings

Investment castings made in 17-4PH stainless steel are mostly used as shaft, pins, brackets and couplers for auto industry,  lift equipment industry, food processing equipment industry and safety instruments industry, etc.

If you have RFQ's for 17-4PH Stainless Steel Investment Castings, please contact us and send us drawings or samples of your products. We will offer our best prices and qualified 304 stainless steel castings to you.