High-Strength Aluminum Alloys for Structures: Extruded Shapes, Pipes & Bars

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For bumpers and front forks

Bumper beam
Bumper beam
Front fork
Front fork

High-strength aluminum alloys, which are capable of creating complex extrusions. Applications include the outer material of bumper beams and front forks, and various types of piping. UACJ's lineup includes products with excellent fatigue strength and corrosion resistance, allowing customers to select the optimal product for their specific application.

Features

Extruded shapes
  • Aluminum alloy can be used to create complex cross-sectional shapes, thin-walled and multi-hole hollow materials.
  • UACJ develops high-strength alloys for hollow extrusions with excellent bending workability.
Pipes and bars
  • High-strength aluminum alloys can be applied to structural and rotational axis materials, enabling a significant reduction in weight.
  • The optimal alloy can be selected from a comprehensive lineup of types to suit the specific application, such as for welded structures or precision cutting.
  • Easy to work on a variety of components, by methods such as hot or cold forging, taper rolling, and joggling.

Types & Properties

Types and mechanical properties of high-strength aluminum alloys for structures

2000 Series

Alloy series Material properties Mechanical properties Properties
AA-equivalent alloys*1 Alloy Temper Tensile strength
(N/mm2)		 Proof stress
(N/mm2)		 Elongation
(%)		 Hollow extrudability
2000 series 2014 2014 T4 420 285 20 －
T6 480 410 13 －
2017 2017 T4 440 275 22 －
2024 2024 T4 470 325 19 －
2013 113S T6 400 375 12 〇

5000 Series

Alloy series Material properties Mechanical properties Properties
AA-equivalent alloys*1 Alloy Temper Tensile strength
(N/mm2)		 Proof stress
(N/mm2)		 Elongation
(%)		 Hollow extrudability
5000 series 5154 254S/5154 O 240 117 27 －
5083 5083 O 290 145 25 －

6000 Series

Alloy series Material properties Mechanical properties Properties
AA-equivalent alloys*1 Alloy Temper Tensile strength
(N/mm2)		 Proof stress
(N/mm2)		 Elongation
(%)		 Hollow extrudability
6000 series 6005C 6005C T5 260 220 12 〇
6061 6061 T6 315 275 19 〇
6061 661S/CM61 T6 340 300 18 〇
－ SG109 T6 310 270 14 〇
－ SG310 T6 400 365 18 －

7000 Series

Alloy series Material properties Mechanical properties Properties
AA-equivalent alloys*1 Alloy Temper Tensile strength
(N/mm2)		 Proof stress
(N/mm2)		 Elongation
(%)		 Hollow extrudability
7000 series 7003 7003 T5 310 260 16 〇
7204 7204 T5 360 320 14 〇
7204 K70Y T5 415 360 16 〇
－ ZK55 T6 420 380 14 〇
7046 ZK170 T6 450 420 14 〇
－ ZK80 T6 500 470 14 〇
7075 7075 T6 590 540 14 －
7050 7050/ZG62 T6 620 570 13 －
－ ZC80 T6 630 580 13 －
－ ZC88 T6 650 600 13 －

*1 AA: The Aluminum Association (U.S.A.)

Note: Stress corrosion cracking performance differs significantly depending on usage environment.
        Please consult us separately for details.

Features of Representative Materials

Types and mechanical properties of high-strength aluminum alloys for structures (thickness: 1 mm)

  • SG109
    A high-strength 6000 series alloy, which has been mass-produced for use in bumpers
  • ZG62
    Enjoys the leading global market share for use as the front fork outer material in motorbikes
  • ZK80
    An alloy with enhanced high strength and high fracture toughness, achieved through structure control of 7204
    Enables production of hollow shapes by means of porthole extrusion
  • ZC88
    A high-strength, high-toughness alloy in the 7000 series of world-leading alloys
    Also has excellent fatigue strength
  • 254S
    A 5000 series non-heat-treated alloy for welded structural components, including subframes and instrument panel beams
    Has good weldability and ample corrosion resistance in practical application