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Aluminium Alloy 1050 Strips/Coils/Sheets/Plates/Bars/Pipes/Tubes/Extrusions


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Temper ：O / H12 / H14 / H16 / H18
Thickness： 0.2-6.0mm
Width： 100-2650mm

Standard：ASTM B209 / EN485

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Product Description

Product Overview

1050 aluminum coil is a commercially pure wrought aluminum product in the 1000 series, containing a minimum of 99.50% aluminum. It is non-heat-treatable and derives its strength primarily from cold working (strain hardening). Compared to 1100 alloy, 1050 offers slightly higher purity, resulting in superior electrical and thermal conductivity, better corrosion resistance, and higher reflectivity.

As a general-purpose pure aluminum grade, 1050 aluminum coil is widely used in chemical processing equipment, food industry containers, building decoration, heat exchangers, signage, lighting reflectors, and various stamping & deep-drawing applications. It is available in multiple tempers — from fully annealed (O) for maximum formability to full hard (H18) for maximum strength.

Common Specifications & Inventory

Thickness (mm)	Width (mm)	Coil ID (mm)	Temper
0.3 – 0.5	1000 / 1219 / 1220	150 / 300	O / H14 / H18
0.5 – 0.8	1000 / 1219 / 1250	150 / 300 / 405	O / H14 / H16
0.8 – 1.2	1000 / 1219 / 1220 / 1250	150 / 300 / 405	O / H14 / H16 / H18
1.2 – 2.0	1000 / 1219 / 1220 / 1250 / 1500	300 / 405 / 505	O / H14 / H16 / H18
2.0 – 3.0	1000 / 1219 / 1220 / 1250 / 1500	300 / 405 / 505	O / H14 / H16 / H18
3.0 – 4.0	1000 / 1219 / 1220 / 1250	300 / 405 / 505	O / H14 / H16
4.0 – 6.0	1000 / 1219 / 1250	300 / 405 / 505	O / H14

Custom sizes (thickness, width, coil ID, and temper combinations) available upon request. Standard tolerance per ASTM B209 / EN 485-2.

Temper States & Mechanical Properties

1050 aluminum is a non-heat-treatable alloy. Its mechanical properties are controlled by cold working (strain hardening). The table below summarizes the key mechanical properties for each temper designation.

Temper	Description	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HB)	Formability
O	Annealed (fully soft)	60 – 95	≥ 20	≥ 25	≤ 25	Excellent — deep draw, spinning
H12	Strain-hardened — 1/4 hard	80 – 120	≥ 60	≥ 8	26 – 30	Good — moderate forming
H14	Strain-hardened — 1/2 hard	105 – 145	≥ 85	≥ 6	30 – 35	Balanced — general sheet metal
H16	Strain-hardened — 3/4 hard	120 – 160	≥ 100	≥ 3	33 – 37	Limited — bending with large radius
H18	Strain-hardened — full hard	≥ 150	≥ 125	≥ 2	≥ 37	Minimal — flat applications only

Chemical Composition

Chemical Composition (wt%)

Per ASTM B209 / EN 573-3 (EN AW-1050A), the chemical composition limits are as follows:

Element	Symbol	Content (wt%)
Aluminum	Al	≥ 99.50
Iron	Fe	≤ 0.40
Silicon	Si	≤ 0.25
Copper	Cu	≤ 0.05
Manganese	Mn	≤ 0.05
Magnesium	Mg	≤ 0.05
Zinc	Zn	≤ 0.05
Titanium	Ti	≤ 0.03
Vanadium	V	≤ 0.05

Physical Properties

Density

2.71 g/cm³

at 20 °C

Melting Range

646 – 657 °C

Solidus – Liquidus

Thermal Conductivity

222 – 231 W/(m·K)

at 25 °C

Electrical Conductivity

61 – 62% IACS

O temper, at 20 °C

Modulus of Elasticity

69 GPa

10,000 ksi

Thermal Expansion

23.6 × 10⁻⁶ /K

20 – 100 °C

Poisson’s Ratio

0.33

Typical for pure Al

Electrical Resistivity

28.2 nΩ·m

at 20 °C

Key Features & Advantages

Excellent Corrosion Resistance

Natural self-healing oxide layer provides reliable protection in atmospheric, industrial, and marine environments. Resistant to many chemicals including nitric acid and hydrogen peroxide.

High Thermal & Electrical Conductivity

Thermal conductivity of ~222–231 W/(m·K) and electrical conductivity of ~61–62% IACS — ideal for heat exchangers, busbars, and conductor applications.

Superior Formability (O Temper)

In the annealed (O) condition, 1050 excels at deep drawing, spinning, stamping, and bending. Elongation up to 25%+ enables complex forming without cracking.

Excellent Weldability

Readily welded using all common techniques including TIG, MIG, and resistance welding. No post-weld heat treatment required.

High Reflectivity & Aesthetic Finish

Excellent reflectivity to both visible light and radiant heat. Takes exceptionally well to polishing, chemical brightening, and anodizing for decorative finishes.

Non-Toxic & Food-Safe

Inert and hygienic — safe for direct food contact, pharmaceutical packaging, and brewing equipment. Does not impart taste or odor.

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