Maraging 300，Maraging C300 Strip，UNS K93160,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 / Maraging C300 Strip (UNS K93160)** --- #### **1. Product Overview** **Maraging Steel C300 Strip** (commercially designated as **Maraging 300 Strip**, **UNS K93160**) is a precision cold-rolled product manufactured from ultra-high-strength maraging steel, supplied in thin, narrow coils or straight lengths. This product combines the highest strength characteristics of Maraging 300 alloy with enhanced manufacturability and dimensional precision, providing optimal solutions for high-volume manufacturing of small, complex components where maximum strength, tight tolerances, and cost-effectiveness are critical in aerospace, defense, and electronic applications. --- #### **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 - **Fatigue Strength:** Excellent in high-cycle applications - **Spring Properties:** Superior resilience and durability **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. Product Specifications** **Strip Dimensions:** - **Thickness Range:** 0.05-3.0 mm (0.002-0.118 inches) - **Width Range:** 10-300 mm (0.4-12 inches) - **Coil Dimensions:** ID 510 mm (20 inches), OD up to 1,500 mm (59 inches) - **Thickness Tolerance:** ±0.005 mm (precision grades) - **Width Tolerance:** ±0.1 mm (precision slitting) - **Surface Finish:** Bright annealed or skin passed **Available Conditions:** - Annealed (32-36 HRC) - Solution Treated - Aged (52-56 HRC) --- #### **5. Applications** **Precision Components:** - Aircraft fastener systems - Spring components for aerospace - Shim stock for critical assemblies - Retaining rings and precision clips - Contact components for electronic devices **Electronics & Defense:** - Connector components - Relay and switch parts - Weapon system small components - Guidance system precision parts - Armor system internal components **Industrial Applications:** - High-strength springs - Precision stampings for medical devices - Cutting tool stock - Bearing components - Instrumentation precision elements --- #### **6. Standards & Specifications** | Organization | Standard | Description | |--------------|----------|-------------| | **AMS** | 6514 | Bars, Forgings, and Tubing | | **ASTM** | A538 | Grade 300 | | **ASTM** | A693 | Precipitation-Hardening Steel | | **UNS** | K93160 | Unified Numbering System | --- #### **7. Heat Treatment Process** **Solution Annealing:** - **Temperature:** 820 ± 10°C (1,508 ± 18°F) - **Time:** 15-30 minutes - **Cooling:** Controlled air cool - **Hardness:** 32-36 HRC **Aging Treatment:** - **Temperature:** 480 ± 5°C (896 ± 9°F) - **Time:** 3-6 hours - **Cooling:** Air cool - **Hardness:** 52-56 HRC --- #### **8. Fabrication Characteristics** **Stamping & Forming:** - Good blankability in annealed condition - Suitable for moderate complexity geometries - Clean edges with proper die clearance - Minimum bend radius 3x material thickness **Surface Treatment:** - Good substrate for various platings - Passivation improves corrosion resistance - Various functional coatings applicable - Achieves high surface finishes --- #### **9. Quality Assurance** **Testing & Certification:** - Dimensional control with laser scanning - 100% visual surface inspection - Mechanical testing with statistical process control - Chemical analysis certification - Microcleanliness control **Specialized Testing:** - Flatness verification - Edge quality monitoring - Surface roughness measurement - Burr height measurement --- **Packaging & Handling:** - Protective interleaving for surface preservation - Moisture-resistant wrapping with desiccant - Custom slitting and rewinding services - Clear identification and certification **Contact:** [Your Company Information] *Note: Maraging C300 Strip offers commercial optimization with enhanced manufacturability while maintaining the highest strength characteristics of the maraging steel family. All mechanical properties are typical for material in the fully aged condition. Strip is normally supplied in annealed condition for forming operations. Due to the high strength of Maraging 300, special attention to tooling and process parameters is required. Consult our technical team for specific application requirements and processing 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 2632 gallon liquid totes Special package is available on request.