6061 T651 Aluminum Plate Thickness Guide: How to Choose the Right Spec for Your Project

If you're searching for "6061 T651 aluminum plate thickness," you likely need precise specifications for manufacturing, construction, or machining. This guide covers standard thickness options, tolerances, applications, and buying tips to help you make the best purchasing decision.

 

 

6061 T651 Aluminum Plate – Key Properties

Alloy: 6061 (Al-Mg-Si)

Temper: T651 (Solution heat-treated, stress-relieved, and stretched)

Advantages: High strength, excellent machinability, good corrosion resistance

Common Standards: ASTM B209, AMS 4027, MIL-A-23180

 

Standard 6061 T651 Aluminum Plate Thickness Options

Thickness (inches)	Thickness (mm)	Common Applications
0.125"	3.175 mm	Lightweight panels, covers
0.25"	6.35 mm	Automotive parts, frames
0.5"	12.7 mm	Structural components, machine bases
1"	25.4 mm	Heavy-duty industrial use
2"	50.8 mm	Aerospace, marine applications

Custom Thickness Available: 0.1" – 6" (2.54 mm – 152.4 mm)

 

 

How to Choose the Right Thickness?

1. By Application

Aerospace/Military: 0.25" – 1" (6.35 – 25.4 mm) – AMS 4027 compliant

Automotive: 0.125" – 0.5" (3.175 – 12.7 mm) – For chassis, brackets

Marine: 0.25" – 0.75" (6.35 – 19 mm) – Corrosion-resistant

Machining/CNC: 0.5" – 2" (12.7 – 50.8 mm) – Stability for precision parts

 

2. By Load Requirements

Light Load: <0.25" (6.35 mm)

Medium Load: 0.25" – 1" (6.35 – 25.4 mm)

Heavy Load: >1" (25.4 mm)

 

3. By Machining Needs

Thinner Plates (0.125"–0.5"): Easier to cut, bend, weld

Thicker Plates (0.5"–2"): Better for milling, drilling, stability

 

Tolerance & Quality Assurance

Standard Tolerance: ±0.005" – ±0.03" (±0.127 mm – ±0.762 mm)

Precision Tolerance: ±0.001" (±0.025 mm) (Available on request)

Testing: Ultrasonic (UT), Eddy Current, Hardness Testing

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Where to Buy 6061 T651 Aluminum Plate?

✅ In Stock: Popular thicknesses (0.125", 0.25", 0.5", 1")
✅ Custom Cutting: Waterjet, laser, or CNC machining available
✅ Global Shipping: DHL, FedEx, Sea Freight

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FAQ – Buyers' Top Questions

Q: What's the difference between 6061 T6 and T651?

A: T651 is stress-relieved for better flatness and machining stability.

 

Q: Can I get a sample before a bulk order?

A: Yes! Free samples for qualified buyers.

 

Q: What's the price per square foot?

A: Depends on thickness & quantity – [Get Real-Time Pricing]

 

Q: Do you provide machining services?

A: Yes – CNC milling, drilling, and surface finishing available.

 

Why Choose Us?

✔ 20+ Years in Aluminum Supply
✔ ASTM/AMS Certified
✔ Fast Turnaround (5-7 Days for Standard Sizes)
✔ 24/7 Customer Support

📩 Contact Us Today for Best Pricing and 6061 T651 Aluminum Plate Thickness! Email:linhui@lhtitanium.com