--10th.May.2024--
Maraging Steel C300 Round Bars - Diameter 280mm ,total 1285Kg are ready for delivery.
As required, the bars are all cut into 500mm long per piece.
Before the C300 maraging steel bars delivering to our clients, we will undergo strictly chemical composition testing, internal structure testing, UT detection and external dimensional testing. Thus delivering the highest quality materials to customers.
C300 steel is a martensitic aging steel with a nickel content of 18% and enhanced performance by adding cobalt. The steel grades in this series have excellent mechanical properties, processing performance, and heat treatment performance.
Maraging300 is an ultra-high strength steel that uses carbon free (or micro carbon) martensite as the matrix and can produce intermetallic compound precipitation hardening through aging treatment. Unlike traditional high-strength steel, it does not require carbon and relies on the dispersion and precipitation of intermetallic compounds for strengthening. This gives it some unique properties: high strength and toughness, low hardening index, good formability, simple heat treatment process, almost no deformation during aging, and good welding performance. Therefore, martensitic aging steel has been widely used in sectors that require this characteristic.
Maraging steel C300 has good thermoplastic properties at high temperatures, and its hot workability is roughly the same as that of 1Cr18Ni9Ti. For steel grades with high titanium and molybdenum content, microsegregation of these elements is prone to occur during ingot solidification, and anisotropic banded microstructures are formed after hot processing. The effective measure to reduce or eliminate microsegregation is to select the appropriate size of steel ingots and conduct sufficient high-temperature homogenization treatment during hot working. In order to prevent the high temperature slow cooling brittleness caused by the precipitation of Ti (C, N) and other compounds along the austenite grain boundaries, the workpiece should be avoided from slow cooling or staying in the temperature range of 1100-750C as much as possible after hot processing. In order to obtain fine grains and better mechanical properties, final forging should be completed at a lower temperature (950-850C) with a larger deformation amount (greater than 25%).
The cold workability is very good in a solid solution state. Drawing, cold rolling, bending, deep drawing and other processing are all easy to carry out. The work hardening index of C300 marching steel is 0.02-0.03, which is one order of magnitude lower than ordinary steel. Therefore, cold processing with a deformation of over 90% can be carried out without the need for softening annealing during the processing.
Sichuan Huitai Special Metals Co.,ltd also produce maraging steel materials grade C250 / C350.
