Aluminium ENAW-AlZn5.5MgCu Plates & Sheets (EU EN, DIN, WNR)

Aluminium ENAW-AlZn5.5MgCu Plates & Sheets (EU EN, DIN, WNR)

600.0 INR/Piece

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Material Composition % Zn 5.1-6.1%, Mg 2.1-2.9%, Cu 1.2-2.0%, Cr 0.18-0.28%, Rest Aluminium
Heat Resistance Yes
Size 1000x2000mm, 1220x2440mm, Custom sizes
Product Form Plates & Sheets
Tensile Strength Ultimate: 510-560 MPa, Yield: 430-480 MPa
Coating Type Anodized or as specified
Corrosion Resistant High with protective coating
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Aluminium ENAW-AlZn5.5MgCu Plates & Sheets (EU EN, DIN, WNR) Price And Quantity

Price 600.0 INR/Piece
Minimum Order Quantity 1000 Piece

Aluminium ENAW-AlZn5.5MgCu Plates & Sheets (EU EN, DIN, WNR) Product Specifications

Size 1000x2000mm, 1220x2440mm, Custom sizes
Application Aerospace, Automotive, Structural Components, Shipbuilding, General Engineering
Product Name Aluminium ENAW-AlZn5.5MgCu Plates & Sheets
Steel Product Type Plate & Sheet
Product Form Plates & Sheets
Tensile Strength Ultimate: 510-560 MPa, Yield: 430-480 MPa
Material Grade ENAW-AlZn5.5MgCu
Weight Varies as per dimension and thickness
Material Composition % Zn 5.1-6.1%, Mg 2.1-2.9%, Cu 1.2-2.0%, Cr 0.18-0.28%, Rest Aluminium
Steel Type Aluminium Alloy
Finish Type Mill Finish / Anodized
Grade ENAW-AlZn5.5MgCu (Equivalent to 7075)
Surface Mill Finish, Smooth, Bright
Heat Resistance Yes
Color Metallic Silver
Usage High strength structural applications
Corrosion Resistant High with protective coating
Hardness Brinell 150-160 HB
Diameter N/A (Applicable for round shapes only)
Recyclable Yes, 100%
Coating Type Anodized or as specified
Composition AlZn5.5MgCu
Thickness 0.5mm - 200mm
Dimension (L*W*H) Customized / As per requirement
Steel Standard EU EN, DIN, WNR (Werkstoffnummer)
Shape Rectangular, Square, Custom shapes available

Elongation at break 7-11% (depends on temper)
Temper Available T6, T651, O, T73, T7651
Machinability Excellent
Modulus of Elasticity 71 GPa
Weldability Limited, best avoided where highest strength required
Density 2.81 g/cm3
Formability Fair, best in annealed condition
Electrical Conductivity 36% IACS
Thermal Conductivity 130-160 W/mK
Packaging Standard Export Sea Worthy Packing
Flatness Tolerance As per EN 485/ASTM B209
Lead Time 7-30 days depending on quantity and size

Product Description

The designation EN AW-AlZn5.5MgCu is the technical chemical name under the European (EN) and International (ISO) systems for the ultra-high-strength alloy commonly known as 7075.

This material represents the pinnacle of aluminum engineering for aerospace and defense, offering a strength-to-density ratio that competes directly with many high-grade steels.

1. Regulatory & Technical Designations

Depending on the region or specific industry (e.g., German automotive vs. European aerospace), you will encounter this material under different names:

System	Designation
EN / ISO	EN AW-AlZn5.5MgCu
Numeric EN	EN AW-7075
Werkstoff Nr. (WNR)	3.4365
DIN (Old German)	AlZnMgCu1.5
UNS (USA)	A97075
Aeronautical (DE)	LN 9073

2. Chemical Composition (EN 573-3)

The name AlZn5.5MgCu explicitly identifies the primary alloying elements that create its massive strength through precipitation hardening:

Zinc (Zn) [5.10 6.10 The primary alloying element, responsible for high strength.
Magnesium (Mg) [2.10 2.90 Works with Zinc to form $MgZn_2$ precipitates.
Copper (Cu) [1.20 2.00 Increases strength and hardness, though it lowers weldability.
Chromium (Cr) [0.18 0.28 Helps control grain structure and improves stress corrosion resistance.

3. Standard Tempers for Plates & Sheets

In the EU market, plates and sheets are almost exclusively supplied in these conditions:

T6: Solution heat-treated and artificially aged. This is the "Peak Strength" condition.
T651: The most common state for Plates. After quenching, the plate is stretched by a controlled amount ( $1.5% text{ to } 3%$ ) to relieve internal stresses. This ensures the material remains flat and stable during heavy machining.
T73 / T7351: Over-aged condition. It reduces maximum strength by about 10-15% but significantly improves resistance to Stress Corrosion Cracking (SCC).

4. Mechanical Properties (EN 485-2)

Typical values for EN AW-AlZn5.5MgCu-T651 plates (thickness 12.5mm 25mm):

Property	Value
Tensile Strength ( $R_m$ )	540 MPa (min)
Yield Strength ( $R_{p0.2}$ )	460 MPa (min)
Elongation ( $A_{50mm}$ )	7%
Brinell Hardness	150 HBW
Density	2.81 g/cm3

5. Fabrication & Application Guidance

Machining & Stability

This alloy is highly favored by CNC machine shops. It produces excellent surface finishes and predictable chip control. When using WNR 3.4365 blocks or plates, the T651 temper is essential if you are milling deep pockets or asymmetrical shapes, as it prevents the "spring-back" effect.

Corrosion & Protection

Because of its high alloy content, 7075 is prone to atmospheric corrosion.

Sheets: Often supplied as Alclad, where the 7075 core is covered with a thin layer of 1050 or 7072 aluminum.
Plates: Usually require Anodizing (Hard, Sulfuric, or Chromic) or high-quality epoxy primers for long-term durability.

Joining

Welding: Generally considered non-weldable for structural purposes.
Fastening: Mechanical joining (bolts/rivets) or structural adhesives are the standard assembly methods.

Summary Comparison: 2014A vs. 7075

Feature	EN AW-2014A	EN AW-7075
Main Element	Copper (Cu)	Zinc (Zn)
Strength	Very High	Highest
Fatigue Life	Excellent	Very Good (but notch sensitive)
Best For	Aircraft Fittings

Exceptional Mechanical & Physical Properties

Aluminium ENAW-AlZn5.5MgCu offers a unique balance of high strength, moderate ductility, and good thermal/electrical conductivity, making it suitable for applications where performance and reliability are essential. It maintains consistent properties across a wide range of thicknesses and tempers, ensuring versatility and adaptability in various industries.

Versatile Applications & Customization

These plates and sheets are commonly applied in aerospace, automotive, shipbuilding, and general engineering sectors. Customization options include a wide selection of sizes, shapes (rectangular, square, custom), and finishes (mill or anodized), allowing clients to specify precise requirements for tailored solutions.

Quality Standards & Reliable Supply

Each product adheres to recognized European and international standards (EN, DIN, WNR), guaranteeing material traceability and quality. Sourced from leading manufacturers, these plates & sheets feature consistent chemical composition and mechanical performance, with timely delivery (7-30 days) based on order size and specifications.

FAQ's of Aluminium ENAW-AlZn5.5MgCu Plates & Sheets (EU EN, DIN, WNR):

Q: How is Aluminium ENAW-AlZn5.5MgCu processed and finished for shipment?

A: Aluminium ENAW-AlZn5.5MgCu plates & sheets are fabricated according to EU EN, DIN, and WNR standards with precise flatness tolerance as per EN 485/ASTM B209. They can be supplied in mill finish or anodized finish, and are packed in standard export seaworthy packing to ensure protection during transit.

Q: What are the typical applications of ENAW-AlZn5.5MgCu plates & sheets?

A: These aluminium plates and sheets are primarily used in aerospace, automotive, shipbuilding, and high-strength structural components. Their combination of high strength, good machinability, and corrosion resistance with a protective coating makes them suitable for demanding engineering environments.

Q: When should a particular temper (T6, T651, O, T73, T7651) be selected?

A: The choice of temper depends on required mechanical properties and application. For highest strength, T6 and T651 tempers are preferred; T73 and T7651 offer improved stress corrosion resistance. The 'O' temper is best for situations requiring enhanced formability. Please consult with your supplier for application-specific recommendations.

Q: Where can custom dimensions and shapes of these plates be ordered?

A: Custom sizes and shapes (rectangular, square, or bespoke) can be ordered directly from reputable manufacturers, producers, or authorized dealers, exporters, and suppliers in India. Options are available beyond standard sizes, ensuring project-specific requirements are met.

Q: What is the benefit of using this alloy in structural applications?

A: The key benefits include high tensile and yield strength, excellent machinability, and high corrosion and heat resistance (up to 120C). These features make it an optimal choice for weight-sensitive high-strength applications, such as in aerospace and transportation industries.

Q: How recyclable is ENAW-AlZn5.5MgCu aluminium plate & sheet?

A: This alloy is fully recyclable (100%), retaining almost all its mechanical properties after recycling, making it an environmentally sustainable choice for various industries.

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