18Ni300 PowDer Excellent Wear & Fatigue Resistance
More consistent than generic "tool steel powder" bought without specifications
2. Grade selection based on application, not just alloy name
Conformal-cooled molds: 15–53 μm, prioritized for flowability and surface finish
Aerospace brackets / high-strength structures: ultra-low oxygen, low inclusions, tight batch-to-batch consistency
DED / laser cladding: 53–150 μm coarse grade
MIM / PM: particle size distribution tailored to feedstock and sintering process
- Case benefits: Complex contour fixtures can be printed directly to match aircraft curved surfaces. It maintains shape stability under repeated clamping loads, lowering the frequency of calibration. It shortens the lead time for custom aerospace tooling compared with CNC machining from solid steel billets.瑞拓美新材料
- Case benefits: The as-printed part can be machined easily before aging. After aging treatment, the component achieves high strength with negligible thermal deformation, maintaining tight dimensional tolerances. Shot peening post-treatment further improves fatigue life under repeated landing cycles. It is widely adopted for auxiliary structural parts of military aircraft and small commercial aircraft landing systems.
### 2. Rocket and Spacecraft Structural Brackets & Engine Accessories
5. **Optimizes wear performance for moving hydraulic and fuel parts**
The alloy can be surface-nitrided to obtain high surface hardness while keeping a tough substrate. For fuel metering valves and hydraulic actuator components with reciprocating sliding motion, nitrided 18Ni300 effectively reduces friction and wear, stabilizing the response precision of engine control systems.
6. **Improves stress corrosion resistance in engine service environment**
Its low-carbon maraging microstructure delivers better resistance to stress corrosion cracking and hydrogen-induced delayed fracture compared with conventional ultra-high-strength steels. It works reliably in environments mixed with engine oil, moisture and trace corrosive contaminants, oiding unexpected crack failure.瑞拓美新材料
18Ni300 Alloy PowDer SLM Printing Maraging Raw PowDer