Maraging 300,Udimar 300 Fittings,UNS K93120,E FORU

British Specs:，American Specs:AMS 6514 Bar, Tube and Forgings AMS 6521 Sheet, Strip and Plate MIL-S-46850 TYPE 4 ASTM A579 / AMS 6514 Powder，German Specs:WS 1.6354 WS 1.6358

### **Technical Data Sheet: Maraging Steel 300 / Udimar 300 Fittings (UNS K93120)** --- #### **1. Product Overview** **Maraging Steel 300 Fittings** (commercially known as **Udimar 300 Fittings**, **UNS K93120**) are precision-engineered components manufactured from ultra-high-strength maraging steel, designed for critical connection and transition points in high-performance fluid and structural systems. These fittings maintain the highest strength characteristics of Maraging 300 alloy in ready-to-install configurations, providing maximum strength-to-weight ratio performance in aerospace, defense, and energy applications where failure is not an option. --- #### **2. Chemical Composition (Weight %)** | Element | Min (%) | Max (%) | Function | |---------|----------|----------|----------| | **Nickel (Ni)** | 18.00 | 19.00 | Matrix strengthening | | **Cobalt (Co)** | 8.50 | 9.50 | Solid solution strengthening | | **Molybdenum (Mo)** | 4.60 | 5.20 | Precipitation hardening | | **Titanium (Ti)** | 0.50 | 0.80 | Primary age-hardening | | **Aluminum (Al)** | 0.05 | 0.15 | Secondary age-hardening | | **Carbon (C)** | - | 0.03 | Impurity control | | **Iron (Fe)** | - | - | Balance | --- #### **3. Mechanical & Physical Properties** **A. Mechanical Properties (Aged Condition)** - **Tensile Strength:** 2,000-2,140 MPa (290-310 ksi) - **Yield Strength:** 1,930-2,070 MPa (280-300 ksi) - **Elongation:** 8-10% - **Hardness:** 52-56 HRC - **Fracture Toughness:** 50-70 MPa√m - **Pressure Rating:** Suitable for ultra-high pressure systems up to 15,000 psi **B. Physical Properties** - **Density:** 8.00 g/cm³ - **Modulus of Elasticity:** 185 GPa - **Thermal Conductivity:** 18.0-20.0 W/m·K - **Thermal Expansion:** 10.4-10.9 × 10⁻⁶/°C --- #### **4. Fitting Types & Configurations** **Connection Styles** - MS (Military Standard) flareless fittings - AN (Army-Navy) flared fittings - JIC 37° flare fittings - ORFS (O-Ring Face Seal) fittings - Metric and ISO standard fittings - NPT and BSP threaded fittings **Standard Product Range** - **Elbows:** 45°, 90°, 120° - **Tees:** Straight, reducing, and cross types - **Unions:** Straight, bulkhead, and reducing - **Adapters:** Male/female combinations - **Caps and Plugs:** Various thread types - **Special Fittings:** Custom engineered solutions --- #### **5. Applications** **Aerospace & Aviation** - Rocket propulsion system fittings - Aircraft hydraulic system connectors - Space vehicle fluid system components - Helicopter hydraulic line fittings - Fuel system high-pressure connectors **Defense Applications** - Weapon system hydraulic fittings - Armor vehicle fluid system components - Missile system pressure fittings - Military aircraft high-pressure connectors - Naval vessel specialized fittings **High-Performance Industrial** - Racing hydraulic system components - High-pressure test equipment fittings - Energy industry specialized connectors - Process industry high-pressure fittings - Research equipment precision fittings --- #### **6. Standards & Specifications** | Organization | Standard | Description | |--------------|----------|-------------| | **AMS** | 6514 | Bars, Forgings, and Tubing | | **ASTM** | A538 | Grade 300 | | **UNS** | K93120 | Unified Numbering System | | **SAE** | AS4841 | Dash Size and Identification | --- #### **7. Manufacturing & Quality Assurance** **Manufacturing Process** - Raw Material: Premium vacuum melted stock - Machining: CNC turning and milling - Heat Treatment: Final aging after machining - Surface Treatment: Passivation per standards - Testing: 100% proof pressure testing **Quality Assurance** - Material Certification: Full traceability - Dimensional Verification: 100% inspected - Pressure Testing: 1.5x working pressure minimum - NDT: Magnetic particle or dye penetrant - Lot Control: Complete manufacturing history --- #### **8. Technical Advantages** **Performance Benefits** - **Weight Reduction:** 40-45% lighter than steel equivalents - **Pressure Capability:** Ultra-high pressure systems - **Corrosion Resistance:** Superior performance - **Fatigue Life:** Excellent under cyclic loading - **Temperature Range:** -54°C to +400°C **Reliability Features** - **Leak-Free Performance:** Precision machined surfaces - **Vibration Resistance:** Maintains integrity - **Long Service Life:** Exceptional wear resistance - **Consistent Quality:** Statistical process control --- #### **9. Installation & Maintenance** **Installation Guidelines** - Proper installation tools required - Torque specifications provided - Compatibility verification with system fluids - Regular inspection for critical applications **Maintenance Features** - Easy disassembly and reassembly - Reusable in most applications - Corrosion resistant - Long service intervals --- **Ordering Information:** - Standard and custom configurations - Complete certification package - Technical support available - Quick delivery options **Contact:** [Your Company Information] *Note: All mechanical properties are typical for material in the fully aged condition. Fittings are supplied ready for installation in fully heat-treated condition. Due to the high strength of Maraging 300, special attention to installation torque and procedures is required. Consult factory for current technical data and application-specific recommendations.*

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 2620 gallon liquid totes Special package is available on request.