Maraging 300,Udimar 300 Sheet,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 Sheet (UNS K93120)** --- #### **1. Product Overview** **Maraging Steel 300 Sheet** (commercially known as **Udimar 300 Sheet**, **UNS K93120**) is a thin, flat-rolled product manufactured from ultra-high-strength maraging steel, designed for applications requiring the highest strength-to-weight ratio in lightweight structures. This product combines the exceptional mechanical properties of Maraging 300 alloy with the precision of sheet manufacturing, providing optimal solutions for aerospace components, defense systems, and high-performance applications where maximum strength and weight reduction are critical. --- #### **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:** Maintains adequate toughness in thin sections - **Bendability:** Good in annealed condition **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** **Sheet Dimensions:** - **Thickness Range:** 0.5-6.0 mm (0.020-0.236 inches) - **Width Range:** 600-1,200 mm (24-48 inches) - **Length Range:** 1,200-2,400 mm (48-96 inches) - **Thickness Tolerance:** ±0.05 mm (precision grades) - **Flatness:** ≤ 2 mm/m - **Surface Finish:** Cold-rolled, annealed, and pickled **Available Conditions:** - Annealed (32-36 HRC) - Solution Treated - Aged (52-56 HRC) --- #### **5. Applications** **Aerospace & Aviation:** - Aircraft structural panels - Wing and tail surface reinforcements - Rocket motor case segments - Helicopter armor protection panels - Space vehicle structural members **Defense & Security:** - Armor vehicle structural panels - Weapon system enclosures and mounts - Military equipment housings - Ballistic protection inserts - Portable defense system components **Precision Engineering:** - High-performance tooling components - Precision instrument frames - Optical mounting systems - Medical device components - Testing equipment structural parts --- #### **6. Standards & Specifications** | Organization | Standard | Description | |--------------|----------|-------------| | **AMS** | 6514 | Bars, Forgings, and Tubing | | **ASTM** | A538 | Grade 300 | | **ASTM** | A693 | Precipitation-Hardening Steel Plate | | **UNS** | K93120 | Unified Numbering System | --- #### **7. Heat Treatment Process** **Solution Annealing:** - **Temperature:** 820 ± 10°C (1,508 ± 18°F) - **Time:** 30-60 minutes - **Cooling:** 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. Forming & Fabrication** **Forming Characteristics:** - **Bend Radius:** Minimum 3x material thickness - **Stretch Forming:** Suitable for complex shapes - **Deep Drawing:** Adequate in annealed condition - **Springback:** Predictable and consistent **Machining & Joining:** - **Machining:** Best performed in annealed condition - **Welding:** TIG and laser welding recommended - **Adhesive Bonding:** Good surface for bonding - **Fastening:** All conventional methods applicable --- #### **9. Quality Assurance** **Testing & Certification:** - **Dimensional Verification:** Laser thickness measurement - **Surface Inspection:** 100% visual examination - **Mechanical Testing:** Tensile tests from samples - **Flatness Measurement:** Optical flatness verification - **Certification:** Full material traceability **Quality Standards:** - Aerospace quality (AS9100) - Nadcap accredited - Military compliance - Statistical process control --- **Packaging & Handling:** - Protective interleaving between sheets - Moisture-resistant wrapping - Wooden crates for large shipments - Clear identification and certification **Contact:** [Your Company Information] *Note: All mechanical properties are typical for material in the fully aged condition. Forming and fabrication should be completed before final aging treatment. Due to the high strength of Maraging 300, special attention should be paid to forming parameters and tooling requirements. Consult our technical team for specific application recommendations and processing guidelines.*

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 2618 gallon liquid totes Special package is available on request.