Plaque en aluminium 7075 – Aerospace Grade T6 T651 High Strength Alloy Plate

Product Overview

Plaque en aluminium 7075 is a high-strength aluminum-zinc (Al-Zn-Mg-Cu) alloy from the 7000 série, one of the strongest aluminum alloys commercially available. With zinc and magnesium as principal alloying elements and copper for additional strength, 7075 achieves tensile strength comparable to many steels while weighing only one-third as much. It is solution heat treated and artificially aged to T6 or T651 temper for maximum strength. Notre 7075 aluminum plates are manufactured per ASTM B209, GB/T 3880, MSA 4045, and QQ-A-250/12, widely used in aerospace, defense, tooling, and high-performance structural applications.

Composition chimique (%), GB/T 3190 & ASTM B209

Al (Aluminium): 87.1 – 91.4 (balance)
Zn (Zinc): 5.1 – 6.1 (principal alloying element)
Mg (Magnésium): 2.1 – 2.9
Cu (Cuivre): 1.2 – 2.0
Cr (Chrome): 0.18 – 0.28
Fe (Fer): 0.5 max
Et (Silicium): 0.4 max
Mn (Manganèse): 0.3 max
De (Titane): 0.2 max
Zr (Zirconium): 0.25 max (for 7075-T73 variants)
Others Each: 0.05 max, Others Total: 0.15 max

Propriétés mécaniques (Typical Values)

Temper T6 (Solution Heat Treated & Artificially Aged): Résistance à la traction 510-570 MPa, Limite d'élasticité 430-505 MPa, Élongation 8-11%
Temper T651 (T6 + Stress Relieved): Résistance à la traction 510-570 MPa, Limite d'élasticité 430-505 MPa, Élongation 8-11%
Temper T7351 (Overaged + Stress Relieved): Résistance à la traction 460-510 MPa, Limite d'élasticité 370-430 MPa, Élongation 8-12% (improved SCC resistance)
Dureté: 150-160 HB (T6/T651)
Résistance à la fatigue: 160 MPa (T6, at 5×10⁸ cycles)
Résistance au cisaillement: 330 MPa (T6)
Module d'élasticité: 71.7 GPa (10,400 ksi)
Specific Strength: One of the highest strength-to-weight ratios of any metal alloy

Propriétés physiques

Densité: 2.81 g/cm³ (0.1015 lb/in³)
Melting Point: 477-635°C (890-1175°F)
Conductivité thermique: 130 W/(m·K) at 25°C (T6)
Conductivité électrique: 32% IACS (T6)
Electrical Resistivity: 5.2 × 10⁻⁸ Ω·m
Thermal Expansion Coefficient: 23.6 × 10⁻⁶/K (20-100°C)
Module d'élasticité: 71.7 GPa (10,400 ksi)
Poisson Ratio: 0.33
Fatigue Endurance Limit: 160 MPa (T6)

Specifications

Normes: ASTM B209, GB/T 3880, GB/T 3190, MSA 4045, QQ-A-250/12, DANS 485, JIS H4000
Épaisseur: 0.5 mm – 250 mm (0.02″ – 10″)
Largeur: 500 mm – 2600 mm (custom slitting available)
Longueur: 500 mm – 12000 mm (custom cutting available)
Caractère: Ô, T6, T651, T7351, T7451
Finition de surface: Mill finish, Bright, Clad (Alclad 7075), Anodized, Coated
Tolérance: Épaisseur: ±0.05mm (thin) to ±0.5mm (thick), Width/Length: ±1mm, Flatness: per ASTM B209
Bord: Sheared edge, sawn edge, or as per requirement
Special: Alclad 7075 available (with pure aluminum cladding for improved corrosion resistance)

Key Features & Avantages

• Extremely high strength – tensile strength up to 570 MPa, comparable to structural steel
• Outstanding strength-to-weight ratio – the benchmark for aerospace structural alloys
• Heat treatable – T6/T651 temper provides maximum mechanical properties
• Good fatigue resistance – excellent for cyclic loading applications
• Excellent machinability in T6 condition – ideal for precision machining
• Good response to anodizing – hard anodizing for wear resistance
• Alclad option available for enhanced corrosion protection
• Consistent properties – solution heat treated, stress relieved, and artificially aged
• Proven performance – the most widely used alloy in aerospace structures
• Readily available in plate form with full traceability documentation

Applications

• Aerospace – aircraft structural components, fuselage frames, wing spars, bulkheads
• Aerospace – helicopter rotors, missile components, satellite structures
• Defense and military – armor plates, weapons systems, vehicle components
• Tooling and molds – injection molds, blow molds, mold bases, jigs and fixtures
• Precision machinery – engrenages, arbres, valve components, high-stress parts
• Automotive racing – suspension components, chassis parts, drive shafts
• Sports equipment – high-performance bicycle frames, climbing equipment
• Marine engineering – high-strength structures (with protective coating)
• Électronique – high-strength enclosures, structural frames
• General engineering – high-strength structural applications where weight matters

Quality Control & Testing

Every batch of our 7075 aluminum plates undergoes strict quality control:

Chemical Analysis: Spectrometer verification of Zn, Mg, Cu, Cr content
Heat Treatment Verification: Conductivity testing, hardness testing to verify T6/T651 treatment
Mechanical Testing: Tensile test, yield strength test, elongation test per temper
Corrosion Testing: Stress corrosion cracking (SCC) test per ASTM G47, exfoliation corrosion test per ASTM G34
Ultrasonic Testing: UT inspection per AMS 2630 for aerospace applications
Surface Inspection: Visual inspection for scratches, pits, and defects
Flatness Check: Flatness tolerance per ASTM B209 / GB/T 3880
Documentation: Mill Test Certificate (MTC), heat treatment records, material traceability, conformity certificate

Emballage & Expédition

Emballage: Standard export packaging – plates stacked with protective paper between sheets, wrapped in waterproof kraft paper and plastic film, wooden pallets or crates, steel strapping, corner protection; protective film on request
Marking: Alliage, caractère, taille, heat number, standard, manufacturer logo
Trade Terms: GOUSSET, CIF, CFR, EXW, DDP
Paiement: T/T (30% deposit, 70% before shipment), L/C at sight, Western Union, PayPal (sample orders)
Délai de mise en œuvre: Standard sizes in stock – 3-7 jours; Custom sizes – 15-30 jours
MOQ: 500 kg for standard sizes; custom orders negotiable
Loading Port: Qingdao, Shanghai, Tianjin, Ningbo, or as requested

Pourquoi nous choisir

With over 15 years of experience in aluminum manufacturing and export, we are a trusted supplier of 7075 aluminum plates to aerospace, defense, and precision engineering companies in more than 50 des pays. Our factory is equipped with advanced rolling, heat treatment, and testing lines, ensuring aerospace-grade quality and consistency. We maintain large inventory of standard sizes and tempers for immediate delivery, and our experienced team can provide technical consultation, material certification support, and customized solutions for your specific applications. Contact us today for a competitive quote!