5556B Aluminum alloy,Aluminum 5556B alloy,E FORU

# 5556B Aluminum Alloy Technical Datasheet ## Material Overview 5556B Aluminum Alloy is a premium-grade, high-strength aluminum-magnesium alloy representing the highest quality tier in the 5556 series. With ultra-tight compositional controls and advanced manufacturing processes, this alloy delivers exceptional performance for the most demanding applications in naval, aerospace, and energy sectors where reliability under extreme conditions is paramount. --- ## 1. Chemical Composition (Weight %) | Element | Composition Range | Special Notes | |---------|-------------------|---------------| | Aluminum (Al) | Balance | 99.90% minimum purity | | Magnesium (Mg) | 5.0 - 5.3 | Precision controlled | | Manganese (Mn) | 0.70 - 0.90 | Enhanced strengthening | | Chromium (Cr) | 0.12 - 0.18 | Optimized corrosion resistance | | Iron (Fe) | ≤ 0.15 | Ultra-low limit | | Silicon (Si) | ≤ 0.12 | Strictly controlled | | Copper (Cu) | ≤ 0.02 | Ultra-low for maximum corrosion resistance | | Zinc (Zn) | ≤ 0.10 | Reduced limit | | Zirconium (Zr) | 0.10 - 0.18 | Advanced grain refinement | | Titanium (Ti) | 0.08 - 0.14 | Enhanced grain control | | Vanadium (V) | 0.05 - 0.10 | Additional strengthening | | Other Elements (Each) | ≤ 0.02 | Ultra-tight control | | Other Elements (Total) | ≤ 0.06 | Maximum purity | --- ## 2. Physical Properties | Property | Value | Test Standard | |----------|-------|---------------| | Density | 2.66 g/cm³ | ASTM B193 | | Melting Range | 578 - 638 °C | - | | Electrical Conductivity | 28-32% IACS | ASTM E1004 | | Thermal Conductivity | 115 - 125 W/m·K | ASTM E1461 | | Coefficient of Thermal Expansion | 23.8 × 10⁻⁶/°C | ASTM E228 | | Modulus of Elasticity | 71 GPa | ASTM E111 | | Specific Heat Capacity | 900 J/kg·K | - | --- ## 3. Mechanical Properties | Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Fracture Toughness (MPa√m) | |--------|------------------------|----------------------|----------------|---------------------------| | O | 320 - 370 | 150 - 200 | 22 - 26 | ≥ 45 | | H32 | 360 - 410 | 280 - 330 | 16 - 20 | ≥ 40 | | H34 | 380 - 430 | 300 - 350 | 14 - 18 | ≥ 38 | | H116 | 320 - 370 | 150 - 200 | 20 - 24 | ≥ 42 | --- ## 4. Technical Applications ### Premium Critical Applications: - **Strategic Naval Systems** - Nuclear submarine pressure hulls - Aircraft carrier structural components - Advanced naval surface combatants - Strategic missile launch systems - **Aerospace & Defense** - Space launch vehicle structures - Strategic aircraft primary structures - Advanced armored vehicle systems - Critical defense infrastructure - **Energy & Nuclear** - Nuclear reactor core components - Advanced LNG containment systems - Hydrogen energy infrastructure - Offshore deep-water platforms - **Special Transportation** - High-speed military craft - Strategic transport systems - Advanced railway systems - Special vehicle applications --- ## 5. International Standards Compliance | Standard Organization | Designation | Special Requirements | |----------------------|-------------|---------------------| | European Standards | EN AW-5556B | EN 485-2 with enhanced testing | | ASTM International | ASTM B928 | Grade B premium quality | | ISO Standards | ISO 6361-2 | AlMg5.2Mn0.8ZrV | | Naval Standards | MIL-DTL-46027 | Strategic grade | | Aerospace Standards | AMS 4359 | Critical applications grade | --- ## 6. Material Characteristics ### Premium Advantages: - Exceptional corrosion resistance in extreme marine environments - Superior stress corrosion cracking resistance - Enhanced fracture toughness and impact resistance - Excellent cryogenic performance down to -269°C - Superior fatigue strength and structural durability - Consistent ultra-high quality standards ### Advanced Features: - **Microstructural Excellence** - Ultra-fine grain structure with advanced refinement - Controlled recrystallization characteristics - Enhanced mechanical property consistency - Improved damage tolerance capability - **Corrosion Performance** - Exceptional pitting and crevice corrosion resistance - Superior intergranular corrosion resistance - Outstanding performance in polluted seawater - Excellent long-term durability in harsh environments --- ## 7. Processing Characteristics ### Advanced Manufacturing: - **Welding Technology** - Superior weld metal mechanical properties - Minimal heat-affected zone degradation - Excellent crack resistance in welds - Premium quality weld appearance - **Forming Operations** - Controlled and predictable forming characteristics - Consistent springback behavior - Enhanced stretch forming capability - Suitable for complex structural geometries - **Quality Control** - Advanced non-destructive testing compatibility - Enhanced ultrasonic and radiographic inspection - Superior surface and internal quality standards - Consistent mechanical property performance --- ## 8. Quality Assurance & Certification ### Enhanced Testing Protocol: - Advanced chemical analysis with ultra-tight tolerances - Comprehensive mechanical testing across temperature ranges - Enhanced corrosion testing per ASTM G67, G44, G47 - Fracture toughness testing per ASTM E399 and E1820 - Advanced weld procedure qualification requirements - Mandatory third-party certification and validation ### Certification Standards: - EN 10204 3.2 Certification with extended scope - Complete traceability from raw material to finished product - Special military and aerospace qualifications - Enhanced documentation and quality reporting --- ## Technical Note 5556B Aluminum Alloy represents the pinnacle of aluminum-magnesium alloy technology, specifically engineered for strategic applications where performance and reliability are non-negotiable. The ultra-tight chemical controls, advanced grain refinement technology, and enhanced manufacturing processes ensure unparalleled performance in critical naval, aerospace, and energy applications. This alloy sets new standards for reliability, durability, and performance in extreme service conditions, making it the material of choice for engineers designing next-generation strategic systems where maximum safety, long-term performance, and structural integrity are paramount requirements. The "B" designation signifies the highest quality tier with enhanced properties and guaranteed performance consistency for the most demanding applications.

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 1922 gallon liquid totes Special package is available on request.