1.What is 18ni300
18ni300 is an ultra-high strength steel based on non carbon (or micro carbon) martensite, which can produce intermetallic compound precipitation hardening during aging. Different from traditional high strength steel, it is strengthened by the dispersion of intermetallic compounds instead of carbon. This makes it have some unique properties: high strength and toughness, low hardening index, good formability, simple heat treatment process, almost no deformation during aging, and good weldability. Therefore, maraging steel has been widely used in the departments that need this property.
2.some grades of 18Ni steel
18Ni（200）（00Ni18Co8Mo3TiAl）；
18Ni（250）（00Ni18Co8Mo5TiAl）；
18Ni（300）（00Ni18Co9Mo5TiAl）；
18Ni (350) (00ni18co13mo4tial) and so on.
3.Similar grades in other countries
USA: .nr.1.2709
Germany: x3nico; moti18-9-5
4.Advantages of 18Ni300
High strength and toughness, low hardening index, good formability, simple heat treatment process, almost no deformation during aging, and good weldability.
5. 18Ni300 alloy spherical powder
It has high strength, high toughness and good process performance. It has many advantages, such as high temperature stability, high strength and excellent toughness, easy manufacturing process, excellent welding performance and so on. It is superior to other high strength steel and is the highest toughness steel among all materials developed today.
5.1.Application of 18ni300 alloy spherical powder
It has been widely used in the field of aerospace.
6.1. chemical composition
C Mn Si P S Fe
≤0.03 ≤0.15 ≤0.10 ≤0.01 ≤0.01 balance
Ni Co Ti Cr Mo
17-19 8.5-10.0 0.8-1.2 ≤0.25 4.5-5.2
5.2. physical property
Density: 8.20g/cm3
Specific surface area: 0.213cm2/g
Sphericity: ≥ 98.5%
Bulk density: 4.07g/cm3
Hall velocity: 19.1s/50g
Melting point: 1350-1420 ℃
Relative density: close to 100%
Recommended: 15 μ m 20 μ m 30 μ m 40 μ m 50 μ M
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