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T: +86-571-8663-6649
E: hzbjys@hzbjys.com
E: hzbjys@hzbjys.com
7/F, 1st Building Of ZhongHao WangJiang International Center, NO.332 East WangJiang Road, HangZhou, ZheJiang, China.
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Product Description
The 7xxx Series High-Strength Aluminum Sheet Plate represents the pinnacle of modern metallurgical engineering, specifically developed to serve as the structural backbone of advanced commercial airliners, military jets, and deep-space exploration vessels. When handling these precision-milled plates, engineers immediately notice the impeccably smooth surface finish, a testament to the rigorous machining tolerances that ensure seamless integration into complex aerospace assemblies. The cool, dense feel of the metal belies its remarkable lightweight nature, offering a structural solution that dramatically reduces the overall mass of an aircraft without sacrificing an ounce of safety. By utilizing advanced zinc-magnesium-copper alloying techniques, this material provides a unique combination of fracture toughness and ballistic resistance. It empowers aerospace designers to push the boundaries of aerodynamic performance, enabling aircraft to achieve unprecedented fuel efficiency and extended operational ranges. Whether subjected to the punishing G-forces of military maneuvers or the extreme thermal fluctuations of orbital flight, these aluminum plates maintain their dimensional stability and structural integrity, ensuring long-term operational safety and reducing maintenance overhead for fleet operators.
Parameter | Value |
Alloy Type | 7075, 7050 |
Temper | T6, T651 |
Tensile Strength | 503–572MPa |
Yield Strength | 469–503MPa |
Hardness | 150–170 HB |
Aerospace-Grade Strength: 7075-T651 sheets exhibit exceptional fatigue resistance (≥100MPa at 10⁷ cycles) and meet AMS 4037 standards, ensuring structural integrity in aircraft wings, fuselages, and landing gear subjected to repeated stress.
Lightweight Design: At 30% lighter than steel, it reduces aircraft weight to improve fuel efficiency by up to 15% while increasing payload capacity for passengers or cargo.
Corrosion Protection: Optional Alclad® coating—a thin layer of pure aluminum bonded to the alloy—enhances salt spray resistance (500+ hours), critical for components exposed to high humidity and atmospheric pollutants at high altitudes.
Precision Machinability: A superior surface finish (Ra ≤1.6μm) allows tight tolerances (±0.01mm) for complex aerospace parts like wing spars and engine mounts, ensuring seamless integration into aircraft systems.
Commercial Aviation: Wing spars, fuselage frames, and engine nacelles depend on 7075’s high modulus of elasticity (72GPa) to withstand aerodynamic forces during flight.
Military Aircraft: Fighter jet wings, missile casings, and helicopter rotor hubs utilize its ballistic resistance and ability to perform in extreme G-force conditions.
Spacecraft: Satellite structures and rocket fuel tanks benefit from its low thermal expansion coefficient (23.6×10⁻⁶/°C), maintaining dimensional stability in the extreme temperature fluctuations of space.
The foundation of this aerospace-grade material lies in its sophisticated metallurgical chemistry. By utilizing zinc as the primary alloying element, combined with precise ratios of magnesium and copper, we achieve an ultra-high-strength matrix that defines the 7075 and 7050 designations. This formulation is specifically tailored to meet the dual demands of extreme lightweighting and unyielding structural rigidity.
Zinc-Dominant Matrix: The high zinc content facilitates profound precipitation hardening, resulting in mechanical strength that rivals heavy steel alloys.
Optimized Copper Addition: Enhances the alloy's fracture toughness and stress-corrosion cracking resistance, vital for pressurized fuselage sections.
Magnesium Integration: Works synergistically with zinc to form MgZn2 precipitates during heat treatment, locking the crystalline structure into an ultra-rigid state.
Controlled Impurities: Strict limitations on iron and silicon content prevent the formation of brittle inclusions, ensuring uniform strength across every square inch of the plate.
Procurement engineers and structural designers demand hard, verifiable data when selecting materials for flight-critical applications. This 7xxx series aluminum plate delivers exceptional mechanical properties designed to withstand extreme aerodynamic loads, high G-forces, and severe environmental stresses without yielding or fracturing.
Unmatched Tensile Performance: Boasting a tensile strength of up to 572 MPa and a yield strength of up to 503 MPa, it provides the load-bearing capacity required for landing gear and engine mounts.
High Modulus of Elasticity: At 72 GPa, the material resists deformation under heavy aerodynamic pressure, maintaining the precise aerodynamic profile of the aircraft wings.
Superior Fracture Toughness: The specialized alloy matrix prevents the rapid propagation of micro-cracks, adding a critical layer of safety for passenger aircraft.
Cryogenic Resilience: Unlike many metals that become dangerously brittle in extreme cold, this alloy retains its full mechanical integrity at temperatures plunging to -253°C, making it indispensable for liquid rocket fuel tanks.
Low Thermal Expansion: A coefficient of 23.6×10-6/°C ensures that satellite structures and sensitive optical mounts remain perfectly aligned despite the extreme temperature swings of low Earth orbit.
The exceptional properties of our 7075 and 7050 aluminum plates are fully realized through a meticulous, multi-stage heat treatment process. We employ T6 and T651 tempering to artificially age the metal and relieve internal residual stresses, resulting in a perfectly flat, highly machinable plate that responds predictably to complex CNC milling operations.
T651 Stress Relief: By stretching the plate after solution heat treatment, we eliminate internal stresses, ensuring the material remains perfectly flat and dimensionally stable during aggressive machining.
Micro-Precision Surface Finish: Achieves a surface roughness of Ra ≤1.6μm, providing a smooth, flawless canvas for advanced aerospace coatings and tight-tolerance assemblies.
Exact Dimensional Tolerances: Manufactured to a strict machining tolerance of ±0.01mm, eliminating the need for costly secondary truing operations and accelerating assembly line throughput.
Consistent Hardness Profile: A uniform hardness rating of 150–170 HB across the entire plate ensures predictable tool wear and consistent cutting speeds during manufacturing.
High-zinc aluminum alloys historically face challenges with stress-corrosion cracking, but our engineered surface protection solutions completely mitigate this risk. We provide advanced cladding and surface treatments that shield the high-strength core from harsh atmospheric pollutants, high-altitude humidity, and corrosive marine environments.
Alclad® Coating Technology: An optional, metallurgically bonded layer of high-purity aluminum acts as a sacrificial anode, protecting the underlying 7xxx alloy from corrosive attack.
Extended Salt Spray Endurance: Tested to withstand over 500 hours in rigorous salt spray environments, ensuring long-lasting reliability for naval aircraft and coastal operations.
Comprehensive Anodizing Readiness: The pristine surface condition allows for seamless integration with Type II and Type III hardcoat anodizing processes, significantly reducing susceptibility to exfoliation and intergranular corrosion.
In the aerospace industry, safety and traceability are non-negotiable. As a trusted manufacturer, we operate under the most stringent quality management systems globally. Every single aluminum plate undergoes rigorous non-destructive testing (NDT) to guarantee a flawless internal structure, providing procurement teams with absolute confidence in their supply chain.
AS9100 & ISO 9001 Certified: Manufactured in facilities that adhere to the highest international standards for aerospace quality management.
NADCAP Accredited Processes: All heat treatment and ultrasonic testing procedures are NADCAP approved, ensuring absolute consistency and reliability.
AMS 4037 Compliance: Fully meets the Aerospace Material Specifications for 7075 aluminum alloy sheet and plate, guaranteeing adherence to industry-wide performance baselines.
100% Lot Traceability: Every plate is permanently marked and accompanied by comprehensive mill test certificates (MTC), tracking the material from the initial melt to the final inspection.
Selecting the right supplier for aviation-grade materials is a critical decision that impacts the safety, cost, and timeline of your entire project. Our commitment goes far beyond simply delivering metal; we act as a strategic manufacturing partner dedicated to optimizing your structural engineering outcomes.
Uncompromising Quality Assurance: From raw ingot inspection to final ultrasonic flaw detection, our multi-tiered quality control guarantees zero-defect deliveries.
Deep Metallurgical Expertise: Our in-house engineering team provides comprehensive technical support, assisting with alloy selection, temper recommendations, and machining optimization.
Cost-Effective Direct Supply: By eliminating intermediaries, we provide highly competitive pricing structures for large-scale industrial procurement without sacrificing material integrity.
Rapid Fulfillment: A massive on-hand inventory of standard aerospace sizes allows for expedited shipping, keeping your critical manufacturing projects strictly on schedule.
To assist procurement specialists and aerospace engineers in their material selection process, we have compiled detailed answers to the most critical technical inquiries regarding our 7xxx series aluminum plates.
Q1: How does the T651 temper differ from the standard T6 temper in 7075 aluminum?
A: While both tempers achieve peak strength through artificial aging, the T651 temper includes an additional controlled stretching process (typically 1.5% to 3%) after solution heat treatment. This critical step relieves internal residual stresses, preventing the plate from warping or distorting during heavy CNC machining, making it ideal for complex aerospace components.
Q2: Is the 7075 aluminum plate suitable for cryogenic applications, such as liquid oxygen tanks?
A: Yes. Unlike carbon steel, which undergoes a ductile-to-brittle transition at low temperatures, our 7xxx series aluminum retains its exceptional mechanical properties and fracture toughness at temperatures as low as -253°C, making it a premier choice for spacecraft cryogenic fuel systems.
Q3: What are the primary methods for joining these high-strength aluminum plates?
A: Due to the high zinc content, traditional fusion welding can lead to hot cracking. We highly recommend Friction Stir Welding (FSW) for a flawless solid-state joint. If fusion welding is required, TIG welding using an ER5356 filler metal is the industry standard to ensure reliable, high-strength structural assemblies.
Q4: How does the Alclad® coating improve the lifespan of the material?
A: The Alclad® process metallurgically bonds a thin layer of high-purity aluminum to the core 7xxx alloy. This pure layer acts as a sacrificial anode, offering superior galvanic protection. It extends the material's salt spray resistance to over 500 hours, which is vital for aircraft operating in humid, coastal, or highly polluted environments.
Q5: Can you provide comprehensive documentation for aerospace compliance?
A: Absolutely. As a certified manufacturer, every shipment is accompanied by full Mill Test Certificates (MTC). Our materials are fully compliant with AMS 4037 standards, and our facilities operate under AS9100, NADCAP, and ISO 9001 certifications, ensuring 100% traceability for your compliance audits.
