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Aluminum Coil

Product Introduction of Aluminum Coil

Aluminum has an excellent strength-to-weight ratio and is easy to form. Its natural corrosion resistance, which can be improved by anodizing, is one of its greatest benefits. The aluminum coil has a wide range of applications, from housing siding, trim strips, gutters, and roofing to cans, lids, bottle caps, and other food packaging, appliances, and electronics. Because it is a lightweight and durable material, it can also be found in the automotive industry.

Aluminum Coil
Description of Aluminum Coil

1100 is the softest aluminum available. It exhibits great ductility, corrosion resistance and high reflectivity. This grade of coil is commonly used for basic cookware, pots and pans and lids, lamps, lanterns, construction materials, traffic signs and ceilings.

 

STRENGTH (METRIC/IMPERIAL) ELONGATION 
TemperUltimate Tensile StrengthYield Strength%
1100-O89 MPa / 13,000 psi5,00030
1100-H14124 MPa / 18,000 psi17,0003
1100-H18165 MPa / 24,000 psi22,0002

3003 aluminum has some of the best formability and is considered on of the most widely used aluminum alloys. It shares many of the same uses as 1100 aluminum, but shows better strength, for example. It can be purposed for more advanced cookware and non-stick pans.

GRADE

 

SIZES ROUTINELY STOCKED

 

Temper

Thickness (Metric/Imperial)

Width

Length

3003-O

.25 – 6mm / 1/64- 15/64″

36″, 48″, 60″

96″, 120″, 144″

3003-H12

.25 – 6mm / 1/64- 15/64″

36″, 48″, 60″

96″, 120″, 144″

3003-H14

.25 – 6mm / 1/64- 15/64″

36″, 48″, 60″

96″, 120″, 144″

3003-H16

.25 – 6mm / 1/64- 15/64″

36″, 48″, 60″

96″, 120″, 144″

3003-H18

.25 – 6mm / 1/64- 15/64″

36″, 48″, 60″

96″, 120″, 144″

This grade is non-heat treatable and has good corrosion resistance. Typical applications are similar to those of 3003 aluminum sheet, but it can also be used for applications requiring greater strength, including storage tanks, pressure vessels, and truck and trailer parts.

GRADESTRENGTH (METRIC/IMPERIAL)ELONGATIONHARDNESS
TemperUltimate Tensile StrengthUltimate Yield StrengthShear StrengthFatigue Strength%Brinell
3004-O180 MPa / 26,000 psi69 MPa / 10,000 psi110 MPa / 16,000 psi97 MPa / 14,000 psi20-2545
3004-H34215 MPa / 31,000 psi170 MPa / 25,000 psi115 MPa / 17,000 psi105 MPa / 15,000 psi10-1752
3004-H36240 MPa / 35,000 psi200 MPa / 25,000 psi125 MPa / 18,000 psi105 MPa / 15,000psi9-1263
3004-H36260 MPa / 38,000 psi230 MPa / 33,000 psi140 MPa / 20,000 psi110 MPa / 16,000 psi5-970
3004-H38285 MPa / 41,000 psi250 MPa / 36,000 psi145 MPa / 21,000 psi110 MPa / 16,000 psi4-677

3105 aluminum is primarily recycled aluminum. It has excellent corrosion resistance, formability, and weldability.  Typical applications are the manufacturing of residential siding, mobile homes, and carrying goods.

GRADESTRENGTH (METRIC/IMPERIAL) ELONGATION
TemperUltimate Tensile Strength (min – max)Ultimate Yield Strength% at 50mm
3105-O110-155 MPa / 15,194 – 22,480 psi16
3105-H12130-175 MPa / 18,854 – 25,381 psi115 MPa / 16,679 psi2
3105-H14160-205 MPa / 23,206 – 29,732 psi145 MPa / 21,030 psi2
3105-H16185-230 MPa / 26,831 – 33,358 psi170 MPa / 24,656 psi1
3105-H18215 MPa / 31,183 psi190 MPa / 27,557 psi1

This grade is excellent for decorative anodizing. It is popular in the automotive industry because of its supreme surface finishing characteristics and relatively high welded strength which makes it suitable for auto bodies.

 

This alloy can be hardened by cold working and shows good strength and hardness. It can be used for ship structures and hulls, packaging tanks, and automotive parts.

GRADESTRENGTH (METRIC/IMPERIAL)ELONGATIONHARDNESS
TemperUltimate Tensile StrengthUltimate Yield StrengthShear StrengthFatigue Strength% at BreakBrinell
5049-O210 MPa / 31,000 psi91 MPa / 13,000 psi19,00013114,000961852
5049-H11220 MPa / 33,000 psi110 MPa / 16,000 psi20,00013714,0009615X
5049-H12240 MPa / 34,000 psi170 MPa / 25,000 psi20,00014014,000969.166
5049-H13250 MPa / 36,000 psi160 MPa / 23,000 psi21,00015014,000998X
5049-H14250 MPa / 37,000 psi200 MPa / 29,000 psi22,00015014,000984.872
5049-H15270 MPa / 39,000 psi200 MPa / 29,000 psi22,00015013,000913.4X
5049-H16240 MPa / 35,000 psi280 MPa / 41,000 psi23,00016015,0001003.180
5049-H17290 MPa / 42,000 psi250 MPa 36,000 psi24,00017014,000962.3X
5049-H18280 MPa / 41,000 psi320 MPa / 47,000 psi27,00018015,000100288
5049-H22240 MPa / 35,000 psi150 MPa / 21,000 psi21,00014017,0001109.563
5049-H24260 MPa / 38,000 psi180 MPa / 26,000 psi22,00015015,000100970
5049-H26290 MPa / 41,000 psi220 MPa / 31,000 psi24,00017018,0001205.678
5049-H28330 MPa / 48,000 psi260 MPa / 37,000 psi28,00019016,000110487
5049-H32240 MPa / 35,000 psi150 MPa / 21,000 psi21,00014017,0001209.563
5049-H34260 MPa / 38,000 psi180 MPa / 26,000 psi22,00015016,000110970
5049-H36290 MPa / 41,000 psi220 MPa / 31,000 psi24,00017017,0001205.678
5049-H38320 MPa / 47,000 psi260 MPa/ 38,000 psi27,00019017,0001203.987

5052 aluminum coil is typically used for mailboxes, ladders, railings, and more. This aluminum plate has good corrosion resistance, workability, and formability.

GRADE SIZES ROUTINELY STOCKED 
TemperThickness (Metric/Imperial)WidthLength
5052-O.25 – 6mm / 1/64 – 15/64″36″, 48″, 60″96″, 120″, 144″
5052-H32.25 – 6mm / 1/64 – 15/64″36″, 48″, 60″96″, 120″, 144″
5052-H34.25 – 6mm / 1/64 – 15/64″36″, 48″, 60″96″, 120″, 144″
5052-H36.25 – 6mm / 1/64 – 15/64″36″, 48″, 60″96″, 120″, 144″
5052-H38.25 – 6mm / 1/64 – 15/64″36″, 48″, 60″96″, 120″, 144″

This alloy has excellent corrosion resistance and tolerates extreme environments like immersion in seawater and industrial chemicals. It is weldable and, among the non-heat treatable alloys, it demonstrates some of the highest strength. Shipbuilding is a common application for this grade.

GRADESTRENGTH (METRIC/IMPERIAL) ELONGATION
TemperUltimate Tensile StrengthYield Strength 
5083-O42 KSI21 KSI14%

5086 aluminum has high strength that can be increased with cold working and is a suitable grade for the marine, automotive, and armor and defense industries.

GRADESTRENGTH (METRIC/IMPERIAL) ELONGATION
    
TemperUltimate Tensile StrengthYield Strength%
5086-O44 KSI14 KSI16%

This non-heat treatable performance alloy is excellent for the automotive industry. It shows good strength, corrosion resistance, high quality surface finishing, excellent weldability, and is easily formed.

GRADESTRENGTH (METRIC/IMPERIAL)  ELONGATIONHARDNESS
TemperUltimate Tensile StrengthYield StrengthShear Strength% at breakBrinell
5182-O275 MPa/39,900 psi130 MPa/18,900 psi170 MPa/25,000 psi1274

5251 aluminum has high fatigue strength, good weldability, and good corrosion resistance. It is seen in the aircraft, marine, automotive, and food processing industries.

GRADESTRENGTH ELONGATION
TemperUltimate Tensile StrengthYield Set 0.2%% at 50mm
5251-O170 – 215 MPa65 MPa15-20

This alloy is suitable for seawater applications. Vehicle bodies, ship parts and exteriors, and fishing equipment are other common applications for this grade.

TEMPER    
 Tensile Strength MPaYield Strength MPa% Elongation at 50mmBrinell Hardness
5754-H111160-200601644
5754-H114190-260801252
5754-H22220-270130763
5754-H24240-280160670
5754-H26265-305190478

This aluminum grade is a high strength heat treatable alloy with good resistance to corrosion. It is commonly seen in the auto industry for parts like outer plates, roofs, fenders, and doors.

GRADESTRENGTH (METRIC/IMPERIAL)    ELONGATIONHARDNESS
TemperUltimate Tensile Strength Yield Strength Fatigue Strength% at breakBrinell
6016-T4200 MPa30,000 psi110 MPa15,000 psi68 MPa2755
6016-T6280 MPa40,000 psi210 MPa31,000 psi89 MPa1180

This high-strength, general-purpose aluminum is an ideal aluminum where a combination of good surface finishing, corrosion resistance, and good strength-to-weight ratio are required. There are many common applications for this alloy, ranging from structural frame molding to bridge components, sail boats, and other marine applications.

GRADESTRENGTH (METRIC/IMPERIAL) HARDNESS 
TemperUltimate Tensile StrengthYield StrengthBrinellRockwell
6061-T4290 MPa / 42,0000 psi270 MPa / 40,000 psi95B60
6061-T6310 MPa / 45,000 psi270 MPa / 39,000 psi95B60

6082 is one of the higher-strength 6000 series aluminum alloys. It can be used for aviation fixtures, trucks, towers, rail structures, and marine accessories.

GRADESTRENGTH (METRIC/IMPERIAL)ELONGATION
TemperUltimate Tensile Strength%
6082-O130MPa / 18,854 psi27

This aluminum sheet is a high-strength heat treatable alloy. It demonstrates excellent surface finishing, corrosion resistance, and good weldability. It is commonly seen in the automotive industry, for auto body paneling.

GRADESTRENGTH (METRIC/IMPERIAL) ELONGATION
TemperTensile Strength MPaYield Strength MPa% at 50mm
6181-T423012024

FAQ

The corrosion resistance of stainless steel coils decreases as the carbon content increases. Therefore, the carbon content of most stainless steels is low, up to 1.2%, and some steels have a low ωC (carbon content) of even less than 0.03% (such as 00Cr12). The main alloying element in stainless steel coil is Cr (chromium). Only when the Cr content reaches a certain value, the steel has corrosion resistance. Therefore, the goods Cr (chromium) content of at least 10.5%. Stainless steel coil also contains Ni, Ti, Mn, N, Nb, Mo, Si, Cu and other elements.

Most of the requirements for use are to maintain the original appearance of the building for a long time. In determining which type of goods to choose, the main considerations are the required aesthetic standards, the corrosiveness of the local atmosphere and the cleaning system to be used. However, other applications are increasingly seeking structural integrity or impermeability. Examples include roofs and sidewalls of industrial buildings. In these applications, construction cost to the owner may be more important than aesthetics, and the surface may not be very clean. The use of 304 stainless steel coils in dry interior environments is quite effective.

Weldability. Different product uses have different requirements for weldability. A class of tableware generally does not require weldability, even including some cookware companies. However, most products require raw materials with good weldability, such as second-class tableware, insulation cups, steel pipes, water heaters, water dispensers, etc.

 


Corrosion resistance. Most stainless steel coil products require good corrosion resistance, such as Class I or Class II tableware, kitchen utensils, water heaters, water dispensers, etc.

 


Polishing performance. In today’s society, stainless steel coil products in the production process are generally polished, only a few products such as water heaters, drinking fountains, etc. do not need to be polished. Therefore, this requires raw materials with good polishing performance.

1. The need for pre-treatment
Pretreatment is an important treatment step before the surface of stainless steel coil parts enter surface treatment (including pickling, chemical polishing and electrochemical polishing, electroplating, passivation, black coating, coloring, chemical treatment, etc.). During the forming process of goods parts, the surface may adhere to oil stains, burrs, rough surfaces and oxides. Therefore, before surface treatment, oil stains, burrs, uneven surfaces and oxides must be removed in order to obtain subsequent satisfactory results through processing.

2. Treatment of removed dirt

Stainless steel coil surface pretreatment in the need to remove the dirt can be divided into two categories: organic and inorganic substances.

(1) organic dirt. Including mineral oil (such as diesel, oil, paraffin, gypsum, etc.) and animal oil, vegetable oil (such as soybean oil, camellia oil, rapeseed oil, lard, butter, etc.). These oils are mainly from the stainless steel coil zero cattle processing process used in the lubricant. , cutting oil, quenching oil, polishing paste and polishing paste, and fingerprints.

(2) Inorganic dirt. Including dirt, dust particles, oxides and other contaminants generated during the heat treatment process.

3. Pretreatment steps for stainless steel coil parts

(1) The surface is mechanically leveled. Eliminate the roughness of the stainless steel coil surface, through mechanical polishing and grinding to achieve a surface finish.

(2) Degreasing. Remove the surface oil and dirt.

(3) Acid washing. Remove the oxides on the surface.

(4) Weak corrosion. Activates the surface to be treated, removes the surface passivation film, and exposes the metal crystal structure.

Stainless steel is a high-alloy steel, with a large resistance to rolling deformation. In order to carry out high-efficiency and high-precision rolling, rigid rolling mills should be used, generally multi-roller cold rolling mill.

 


Special welding process is also a feature of cold-rolled stainless steel coil production.

 


In the production process of cold rolled stainless steel coil, the raw material (hot rolled coil) should be annealed, intermediate annealing should be carried out in the cold rolling process, and the final product should be annealed, so annealing is an important part of the production.

 


Cold-rolled stainless steel is a high-grade steel products, there are strict requirements for surface quality. Not only are metallurgical defects caused by the previous process not allowed, but also obvious defects caused by the cold rolling process.

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