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The martensitic precipitation-hardened stainless steel grade known as SAE Type 630 is sometimes referred to as 17-4 PH, 17-4, or UNS S17400. It has a chromium content of 15–17.5%, a nickel content of 3-5%, and a copper content of 3-5%.The name is derived from the chemical composition, which contains about 17% chromium and 4% nickel.
The terms SUS630 and 17-4PH both refer to the same grade.In addition to having high levels of machinability and corrosion resistance that are comparable to austenitic 304 stainless steel, 17-4 may be heat treated to high levels of strength and hardness. 17-4 is magnetic because it is martensitic.
When heated to the state of H900, 17-4 can be toughened up to around 44 Rc.Overaging increases resistance to stress corrosion cracking by ageing past the state of peak strength.
Components requiring great hardness and/or corrosion resistance at temperatures as high as 600 °F can be made out of 17-4 stainless steel. The petroleum and chemical sectors, as well as the manufacture of aircraft parts, are specific areas in which 17-4 is used. also employed in the guns sector.
The Global 17-4 PH Stainless Steel Market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
For FDM printers, BASF’s Forward AM unit has launched metal filament with a 17-4 PH rating. Stainless steel 17-4 PH, which is often used, has a wide range of industrial and machine building uses. Their metal filament enables printing on popular FDM printers like the Prusa or BCN3D, followed by debinding and sintering to produce a metal component.
Two binders are present in the filament. The “green part” is first printed before being catalytically debound to become the “brown part.” The second binder is then eliminated through sintering in a furnace. after post-processing, whether by polishing or another method.
