Aluminum Square Tubing

Specifications

Item	Aluminum Square Tubing
Place of Origin	Tianjin, China
Alloy Grades	1000, 3000, 5000, 6000, 7000 series aluminum alloys
Side Length Range	8mm – 300mm
Wall Thickness Range	0.4mm – 50mm
Length	1.5m – 7.1m; custom lengths up to 12m available
Applicable Standards	GB/T 4437, ASTM B221, EN 755, JIS H4100
MOQ	10 tons
Lead Time	8–15 working days
Packaging	Standard export packaging
Surface treatment	Brushed, polished, black square aluminum tubing, colored, etc.

Product Features

Light Weight & High Strength

This is the most prominent advantage of aluminum tubing. Its density is only 2.7g/cm³. For tubes of identical dimensions, aluminum tubing weighs just one-third of steel tubing.

Outstanding Corrosion Resistance

A dense aluminum oxide (Al₂O₃) film naturally forms on the aluminum surface to protect the substrate. It brings extremely low maintenance costs and extended service life.

Excellent Machinability & Weldability

Aluminum square tubes are integrally extruded from aluminum billets without longitudinal weld seams. They can be bent, welded and punched. Grades 6061 and 6063 are compatible with arc welding, spot welding and gas welding.

Good Thermal Conductivity

It delivers stable and efficient heat conduction when used in heat dissipation components for electronic, electrical and construction projects.

Common Alloy Grades & Tempers

Alloy Grade	Alloy System	Standard Available Tempers
1050/1060/1070/1100	Pure Aluminum	O, H14, H24
3003	Al-Manganese Alloy	H14, H24
5005	Al-Magnesium Alloy	H14, H24
5052	Al-Magnesium Alloy	H32, H34
5056	Al-Magnesium Alloy	H32, H34
5083	Al-Magnesium Alloy	H32, H34
5086	Al-Magnesium Alloy	H32, H34
5754	Al-Magnesium Alloy	H22, H32
6063	Al-Magnesium-Silicon Alloy	T5, T52, T4/O (Customizable)
6061	Al-Magnesium-Silicon Alloy	T6, T4/T66 (Customizable)
6082	Al-Magnesium-Silicon Alloy	T6
7005	Al-Zinc-Magnesium Alloy	T5, T6
7075	Al-Zinc-Magnesium Alloy	T6, T651

Application Scenarios

Frame Structures

Lightweight houses, modular container buildings, sheds, door & window frames, ceiling keels and other framing systems.

Industrial Machinery

Fixing brackets for busbars, sorting conveyor bars, equipment bases, drainage pipes, exhaust and smoke ventilation ducts.

Transportation & Locomotive

Outdoor lamp posts, rectangular border tubes for billboards, frames for vehicles, ships and yachts.

Daily Consumer Products

Tables, chairs, cabinet legs, shelf partitions, biochemical waste frames, fitness equipment, site fencing.

Recommended Applications for Typical Grades & Tempers

1. 6063-T5: Mainly used for doors, windows, railings and lightweight decorative frames. Choose 6063-T52 for precision deep processing.
2. 6061-T6 / 6082-T6: For industrial load-bearing structures such as machinery, columns and beams.
3. 5052-H32: Suitable for coastal, humid, chemical and marine environments.
4. 5005-H14/H24: Preferred decorative alloy for colored finishes including red, yellow, blue and green.
5. 5754-H22/H32: Sheet metal components for automobiles, trains, subways and high-speed rails.
6. 7075-T6/T651: Premium high-strength applications requiring both light weight and superior load-bearing capacity.

Common Tempers of Aluminum Square Tubing

Definition of Temper

Temper is a universal industry term worldwide. The same aluminum alloy will obtain different hardness, tensile strength and bending performance after distinct forming and heat treatment processes. Temper designations are used to distinguish these mechanical properties.

Aluminum alloys are divided into two major categories based on whether their strength can be enhanced by heat treatment, corresponding to different temper codes:

1. Series 6 & Series 7 Alloys: Heat-treatable alloys (e.g. 6061, 6063, 7075), marked with T or O prefixes.
2. Series 1, Series 3 & Series 5 Alloys: Non-heat-treatable alloys, only hardened by cold rolling (e.g. 5052, 5005, 1060, 3003), marked with H or O prefixes.

Tempers for Series 6 & Series 7 Alloys

• T5: Stable mechanical performance with medium-to-high strength. 6063-T5 features good ductility and accounts for a large export volume.
• T6: The most widely used high-strength temper, adopted for 6061-T6 and 6082-T6. It offers an excellent strength-to-weight ratio for industrial load-bearing parts, with lower plasticity than T5.
• T4: Better formability than T6 but lower tensile strength. Ideal for medium-load structures, cold bending and secondary processing.
• O Temper: The softest temper with minimum strength, suitable for deep stamping, bending and complex forming.

Tempers for Series 5 Alloys

“H” stands for strain hardening via cold rolling.

• The first digit after H: Type of hardening process
• The second digit after H: Degree of hardening

Types of Hardening Treatment

• H1: Cold rolled and strain hardened only, without subsequent annealing or stabilizing treatment.
• H2: Cold rolled and hardened, then partially annealed to restore ductility.
• H3: Cold rolled and hardened, then stabilized. This temper is applied to 5052 and 5083 to prevent cracking during long-term storage.

Hardening Degree

The second digit after H indicates the hardening level; higher numbers represent higher hardness and lower ductility:

• 2 = 1/4 Hard
• 4 = 1/2 Hard
• 6 = 3/4 Hard
• 8 = Full Hard

Tempers for Series 1 & Series 3 Alloys

These grades have no heat-treated T tempers, only O, H14 and H24 available; H14 and H24 are standard half-hard tempers.

Mechanical Property Table

Grade & Temper	Yield Strength Rp0.2 (MPa)	Tensile Strength Rm (MPa)	Elongation A (%)
1060-O	≥15	≥70	≥43
3003-H24	≥115	≥150	≥16
5005-H24	≥130	≥160	≥12
5052-H32	≥195	≥230	≥12
5083-H32	≥215	≥305	≥14
5754-H32	≥180	≥240	≥15
6063-T5	≥140	≥205	≥8
6063-T52	≥145	≥210	≥7
6061-T6	≥240	≥290	≥10
6082-T6	≥260	≥310	≥9
7075-T6	≥505	≥570	≥7

Standard Sizes

Aluminum Square Tubing

Metric Size mm×mm	Equivalent Inch Size	Standard Stock Wall Thickness mm
10×10	3/8″ (0.375″)	0.5/0.7
13×13	1/2″ (0.5″)	0.6/0.8
20×20	3/4″ (0.75″)	0.8/1.0
25×25	1″ (1 inch)	1.0/1.2/1.5
40×40	1.5″ (1.5 inch)	1.2/1.5/2.0
50×50	2″ (2 inch)	1.5/2.0/2.5
90×90	3.5″ (3.5 inch)	2.5/3.5/4.5
130×130	5″ (5 inch)	3.5/4.5/5.5
150×150	6″ (6 inch)	4.0/5.0/6.0

Aluminum Rectangular Tubing

Metric Section mm×mm	Equivalent Inch Size	Standard Stock Wall Thickness mm
50×75	2″×3″	1.2/1.5/2.0
50×150	2″×6″	1.5/2.0/2.5
50×100	2″×4″	1.5/2.0
60×120	2.5″×4.5″	2.0/2.5
80×160	3″×6″	2.5/3.0
100×200	4″×8″	3.0/4.0/5.0

Why Choose Glory Steel

1. Full-grade supply capability: Our factory manufactures Series 1, 3, 5, 6 and 7 aluminum alloy tubes, supporting all mainstream tempers for overseas trade.
2. Complete specification coverage: Standard sizes of aluminum square and rectangular tubes are kept in stock, with abundant wall thickness and cross-section options plus custom fabrication service.
3. Stable quality control: Production strictly complies with international standards to deliver consistent mechanical performance, hardness and corrosion resistance.
4. Surface finishing & deep processing: We provide anodizing, sandblasting, polishing, fluorocarbon coating and other surface treatments, as well as full mechanical processing including cutting, punching and tapping.

Glory Steel factory, located in Tianjin, China, is an ISO 9001, ISO 14001, and CE certified factory with an annual output of 100,000 tons. We specialize in the production of aluminum alloy, ZAM, stainless steel, and galvanized square and rectangular tubes. With our high-quality products and services, we export to over 120 countries.