6061 Aluminum Plate - AMS 4027 - T651

6061 Aluminum plate (AMS 4027) is one of the most versatile grades of high strength, heat treatable aluminum alloys. The T6 temper is achieved through a solution heat treatment and artificial aging to achieve the greatest level of precipitation hardening, and it resists stress cracking due to the inclusion of magnesium and silicon as major alloying elements. It is used for engineering and structural applications, boats, furniture, stairs, and more. With an excellent strength to weight ratio, good toughness, and high corrosion resistance, it’s no wonder that 6061 aluminum alloys are so widely used.  Our plate stock is available in a variety of thicknesses – ask about our cutting and shearing services for this product.

6061 Inventory Size Ranges


0.1875" - 6.000"

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Working with  6061 Aluminum

Popular applications for our 6061 aluminum plate products (also known as 6061-T651) include fabrication of aluminum flooring, ramps, base plates, stairs, structural applications and more. It exhibits excellent machinability and is very suitable for welding applications. Our 6061-T651 aluminum tooling plate is an ideal product for many general purpose applications.

Characteristics of 6061 Aluminum

  • Corrosion Resistance: Good
  • Wear Resistance: Good
  • Stress Cracking Resistance: Excellent
  • Weldability (GAS, ARC): Excellent
  • Machinability: Good
  • Bending: Poor

Standard Inventory Specifications

  • AMS 4027
  • ASTM B 209
  • ASME SB 209

Other industry standards we comply with:

  • DFARS Compliant

Common Trade Names

  • 6061 Tread Plate
  • T651 Tooling Plate (®Alcoa North American Rolled Products)
  • Aluminium 6061
  • T6 aluminum
  • 6061-T651 temper

Common Applications of 6061

  • Transportation components - truck bodies and frames
  • Structural and architectural components - steps, platforms, cover plates
  • Aircraft and marine fittings
  • Machine processing equipment
  • Recreational products
  • Typical tooling plate applications
  • Heat Exchangers

Chemical Composition

Chemical Properties of 6061 Aluminum Plate
Element Percent by Weight
Si Silicon 0.40 - 0.80%
Fe Iron 0.70% max
Cu Copper 0.15 - 0.40%
Mn Manganese 0.8 - 1.2%
Mg Magnesium 0.8 - 1.2%
Cr Chromium 0.25% max
Zn Zinc 0.25% max
Ti Titanium 0.15% max
- Others Each 0.05% max
- Others Total 0.15% max
Al Aluminum Balance
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Physical Properties of 6061 Aluminium 

Density lb/in3 0.0975
Thermal Conductivity, Btu-in/hr-ft²-°F 1160
Electrical Resistivity, Ω-cm 3.99e-006
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Mechanical Properties of 6061 Aluminum Plate 

Ultimate Tensile Strength, psi 45,000
Tensile Yield Strength, psi 40,000
Elongation at Break 12%
Hardness, Rockwell B 60
Modulus of Elasticity, ksi 10,000
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*The technical data provided is for information only and not for design purposes. It is not warranted or guaranteed.