1.4542 (17-4 PH) (X5CrNiCuNb16-4) steel is a progressively used maraging steel. The material 1.4542 (17-4 PH) possesses both high mechanical values similar to martensitic steels and high corrosion resistance akin to austenitic steels. 1.4542 (17-4 PH) stainless steel is commonly preferred in various industrial applications due to its high strength and corrosion resistance properties. The AISI 630 material contains 17% chromium, 4% molybdenum, and 4% nickel, offering properties such as high-temperature resistance, high fatigue life, and wear resistance. 1.4542 (17-4 PH) material is employed due to its high strength and ease of machinability. It is suitable for processes like forging, casting, drawing, cold forming, and other machining operations. Furthermore, 1.4542 (17-4 PH) steel is resistant to temperature changes and is an ideal material for parts operating at high temperatures due to its heat-resistant properties.
Application
17-4PH, 630 and X5CrNiCuNb16-4 / 1.4542 is provided in the form of round bars, sheets, flat bars and cold-rolled strip. The material is widely used in the aerospace, marine, paper, energy, offshore and food industries for heavy-duty machine components, bushings, turbine blades, couplings, screws, drive shafts, nuts, measuring devices.
Chemical Component
| Grade | C | Mn | P | S | Si | Cr | Ni | Cu | Cb+Ta |
| 630 UNS S17400 | 0-0.07 | 0-1 | 0-0.04 | 0-0. 030 | 0-1 | 15-17.5 | 3-5 | 3-5 | 0.15-0.45 |
Mechanical Properties
| Condition | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) | Elongation (% in 50mm) | Hardness | |
| Rockwell C (HR C) | Brinell (HB) | ||||
| Solution Treated | 1105 typ | 1000 typ | 15 typ | 38 max | 363 max |
| Condition 900 | 1310 min | 1170 min | 10 min | 40 min | 388 min |
| Condition 1150 | 930 min | 724 min | 16 min | 28 min | 277 min |
Partial part type display:
