Latrobe Lescalloy® HY-180 VIM-VAR ;High Strength Alloy Steel

Latrobe Lescalloy® HY-180 VIM-VAR ; .375 - 2 thickness High Strength Alloy Steel Product Information -:- For detailed product information, please contact sales. -: Latrobe Lescalloy® HY-180 VIM-VAR ; .375 - 2 thickness High Strength Alloy Steel Synonyms -:- For detailed product information, please contact sales. -:

Latrobe Lescalloy® HY-180 VIM-VAR ; .375 - 2 thickness High Strength Alloy Steel Product Information -:- For detailed product information, please contact sales. -: # **Product Introduction: Latrobe Lescalloy® HY-180 VIM-VAR (Thickness: 0.375" - 2")** ## **Overview** Latrobe Lescalloy® **HY-180 VIM-VAR** is a premier **ultra-high-strength secondary hardening alloy steel** produced through the advanced **Vacuum Induction Melting plus Vacuum Arc Remelting (VIM-VAR)** double refining process. This material is engineered specifically for applications demanding **exceptional strength-toughness combinations** and **superior ballistic performance** in critical thickness ranges from **0.375 to 2 inches (9.5 to 50.8 mm)**. The **VIM-VAR dual process** provides the highest level of metallurgical purity and homogeneity, resulting in **exceptional transverse properties, reduced segregation, and optimal through-thickness performance** - making it the material of choice for the most demanding defense and aerospace applications. --- ## **Key Features & Benefits** | Feature | Benefit | |---------|---------| | **VIM-VAR Double Refined** | Ultimate purity with minimal inclusions, gases, and segregation | | **Secondary Hardening System** | Achieves peak strength through precipitation hardening during tempering | | **Optimal Thickness Range** | Engineered for consistent properties in 0.375" - 2" cross-sections | | **Superior Ballistic Performance** | Exceptional resistance to penetration and fragmentation | | **Excellent Fracture Toughness** | Maintains high toughness at strength levels exceeding 180 ksi yield | | **Balanced Strength/Ductility** | Optimal combination for energy absorption applications | --- ## **Chemical Composition (Typical Weight %)** | Element | Content (%) | Element | Content (%) | |---------|-------------|---------|-------------| | **Carbon (C)** | 0.10 - 0.14 | **Cobalt (Co)** | 7.50 - 8.50 | | **Nickel (Ni)** | 10.00 - 11.00 | **Molybdenum (Mo)** | 1.20 - 1.50 | | **Chromium (Cr)** | 2.00 - 2.50 | **Vanadium (V)** | 0.05 - 0.10 | | **Silicon (Si)** | 0.10 - 0.20 | **Manganese (Mn)** | 0.10 - 0.30 | | **Iron (Fe)** | Balance | **Sulfur/Phosphorus** | ≤0.010 each | *Note: Unique Ni-Co-Mo secondary hardening system enables exceptional strength-toughness balance.* --- ## **Physical & Mechanical Properties** *Typical properties after optimal heat treatment (Austenitize, Cryogenic treatment, and Double Temper)* ### **Mechanical Properties (Longitudinal)** | Property | Typical Value | Units | |----------|---------------|--------| | **Tensile Strength** | 195 - 215 | ksi (1345 - 1480 MPa) | | **Yield Strength (0.2% Offset)** | 180 - 200 | ksi (1240 - 1380 MPa) | | **Elongation (in 2")** | 12 - 16 | % | | **Reduction in Area** | 45 - 60 | % | | **Hardness** | 48 - 52 | HRC | ### **Fracture Toughness** | Orientation | Typical K_Ic Value | Units | |-------------|----------------------------|--------| | **L-T Orientation** | 120 - 150 | ksi√in (130 - 165 MPa√m) | | **T-L Orientation** | 100 - 130 | ksi√in (110 - 140 MPa√m) | *Note: Unusually high transverse toughness for ultra-high-strength steel due to VIM-VAR purity.* ### **Physical Properties** - **Density:** 0.286 lb/in³ (7.91 g/cm³) - **Melting Point:** 2600 - 2650°F (1425 - 1455°C) - **Modulus of Elasticity:** 29.0 x 10⁶ psi (200 GPa) --- ## **International Standards & Specifications** HY-180 VIM-VAR is certified to meet the most stringent international and military standards: ### **Primary Specifications** - **MIL-DTL-32375:** Military specification for armor steel plate - **AMS 6528:** Aerospace material specification (when applicable) - **MIL-S-8949:** Secondary hardening steel plate specification ### **Quality & Processing Standards** - **ASTM A829:** Standard for pressure vessel plates - **NAVSEA S9074-AQ-GIB-010/278:** Naval welding requirements - **MIL-STD-2154:** Inspection of forgings ### **Ballistic Standards Compliance** - **MIL-DTL-46100:** High hardness armor plate - **NATO STANAG 4569:** Protection levels for armored vehicles --- ## **Product Applications** ### **Defense & Armor Applications** - **Vehicle Armor Systems:** Hulls, turrets, and appliqué armor for main battle tanks, infantry fighting vehicles, and personnel carriers - **Ballistic Protection:** Critical armor components requiring optimal multi-hit capability - **Naval Applications:** Ship armor and blast-resistant structures - **Aircraft Armor:** Helicopter and fixed-wing aircraft protective systems ### **Aerospace Applications** - **Launch Vehicle Components:** High-strength structural members - **Aircraft Landing Gear:** Critical components for heavy-lift aircraft - **Rotorcraft Components:** High-stress dynamic parts ### **Specialized Industrial Applications** - **High-Performance Tooling:** Dies and molds requiring exceptional toughness - **Energy Sector:** Critical components for deep drilling equipment - **Racing & Motorsports:** Safety-critical structural components --- ## **Processing & Fabrication Guidelines** ### **Heat Treatment** 1. **Austenitizing:** 1475-1525°F (802-829°C) followed by oil quench 2. **Cryogenic Treatment:** -100°F (-73°C) minimum for complete transformation 3. **Tempering:** Double temper at 900-950°F (482-510°C) for secondary hardening 4. **Stress Relief:** May be required after heavy machining or forming ### **Machining & Fabrication** - **Annealed Condition:** Machinability rating approximately 50% of 1212 steel - **Hardened Condition:** Requires carbide or ceramic tooling with rigid setups - **Welding:** Requires specialized procedures with matching filler metals and strict pre/post-heat treatment - **Forming:** Best performed in annealed condition with appropriate tooling ### **Quality Assurance** - **Ultrasonic Testing:** Per ASTM A578 Level II or higher - **Macroetch Testing:** Per ASTM E340 for internal quality - **Chemical Analysis:** Per ASTM E1019 for precise chemistry control - **Mechanical Testing:** Longitudinal and transverse testing per specification requirements --- ## **Available Forms & Sizes** - **Primary Form:** Plate material - **Thickness Range:** 0.375" to 2.0" (9.5 mm to 50.8 mm) - **Widths:** Up to 72" (1829 mm) - **Lengths:** Up to 240" (6096 mm) - **Surface Condition:** Shot blasted, pickled, or mill finished per requirement --- ## **Technical Support** Latrobe provides comprehensive technical support including: - Custom heat treatment development - Welding procedure qualification - Failure analysis and forensic metallurgy - Application-specific property optimization *For detailed technical data sheets, processing guidelines, or application engineering support, please contact Latrobe Specialty Steels' technical service department.* --- **Disclaimer:** The information provided is for general reference. Specific application requirements should be verified with Latrobe's technical department. Properties may vary based on exact processing parameters and final heat treatment. All values are typical and minimum guaranteed values are specified in certified test reports. -:- For detailed product information, please contact sales. -: Latrobe Lescalloy® HY-180 VIM-VAR ; .375 - 2 thickness High Strength Alloy Steel Specification Dimensions Size： Diameter 20-1000 mm Length <6454 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: Latrobe Lescalloy® HY-180 VIM-VAR ; .375 - 2 thickness High Strength Alloy Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Latrobe Lescalloy® HY-180 VIM-VAR ; .375 - 2 thickness High Strength Alloy Steel -:- For detailed product information, please contact sales. -: Chemical Identifiers Latrobe Lescalloy® HY-180 VIM-VAR ; .375 - 2 thickness High Strength Alloy Steel -:- For detailed product information, please contact sales. -:

Packing of Latrobe Lescalloy® HY-180 VIM-VAR ; .375 - 2 thickness High Strength Alloy Steel -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: 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 2925 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition