3A21 Aluminum Plate

SKU: HC-1138067936893542400

3A21 aluminum plate is an Al-Mn alloy. It is a widely used anti-rust aluminum with good corrosion resistance and good weldability. It is mainly used for applications requiring high plasticity and good weldability. And it usually works in liquid or gas media.

Testing & Certification

Key Features

  • Third-Party Inspection Support
  • Sufficient Inventory Supply
  • International Standard Certification
  • Custom Processing Service

Contact Us

Scan to chatWhatsApp QR Code

Product Description

3A21 aluminum plate is an Al-Mn alloy. It is a widely used anti-rust aluminum with good corrosion resistance and good weldability. It is mainly used for applications requiring high plasticity and good weldability. And it usually works in liquid or gas media. 3A21 aluminum alloy, also known as A921 aluminum alloy, is an aluminum alloy material whose main component includes aluminum and a small amount of other alloy elements such as manganese, copper, chromium, and Zinc. 3A21 aluminum plate has good tensile strength and yield strength and can meet applications with various strength requirements. 3A21 aluminum alloy has good corrosion resistance and can be used for a long time in humid and corrosive environments without rusting easily. Besides, 3A21 aluminum plate can be subjected to various surface treatments, such as anodizing, spraying, chrome plating, etc., to increase its surface hardness and decoration. Another thing that makes 3A21 aluminum plate a favorable option is aluminum alloy is light in weight and low in density compared to other metals. It is an ideal lightweight material and is suitable for product designs that require light weight.

Product Parameters

Width20-3000mm or CustomizedThickness0.1-120mm or Customized
Length100-12000mm or CustomizedCertificateISO,SGS,BV
StandardJIS,AISI,ASTM,GB,DIN,EN,etc.
Brand1000 Series: 1050,1060,1070,1100,1200,1235,etc.3000 Series: 3003,3004,3005,3104,3105,3A21,etc.5000 Series: 5005,5052,5083,5086,5154,5182,5251,5754,5A05,etc.6000 Series: 6061,6063,6082,6A02,etc.7000 Series: 7050,7475,7075,etc.8000 Series: 8A06,8011,8090,etc.
SurfaceCoating,Embossing,Drawing,Polishing,Anodizing,etc.
OEM ServicePunching,Cutting Special Size,Making Flat Surface,Surface Treatment,etc.
ApplicationConstruction,Shipbuilding,Decoration,Industry,Manufacturing,Machinery,Hardware And Other Fields,etc.
PackagingStrapping,plastic bag,film,wooden pallet Standard seaworthy export packing or according to customer requirement

Chemical Composition

AlloySiFeCuMnMgCrZnTiOthers: EachOthers: TotalAl: Min.
10500.250.400.050.050.05-0.050.030.03-99.50
10600.250.350.050.030.03-0.050.030.03-99.60
10700.200.250.040.030.03-0.040.030.05-99.70
11000.95 Si Fee0.05~0.200.05--0.1-0.050.1599.0
20140.5~1.20.73.9~5.00.4~1.20.2~0.80.100.250.150.050.15Margin
20170.2~0.80.73.5~4.50.4~1.00.4~0.80.100.250.150.050.1591.5 - 95.5
20240.500.503.8~4.90.3~0.91.2~1.80.100.250.150.050.15Margin
30030.600.700.05~0.201.0~1.5--0.10-0.050.15Margin
3A210.600.700.201.0-1.60.05-0.150.1-0.2--Margin
30040.300.700.251.0~1.50.8~1.3-0.25-0.050.15Margin
30050.600.700.301.0~1.50.2~0.60.100.250.100.050.15Margin
31050.600.700.300.3~0.80.2~0.80.200.400.100.050.15Margin
50050.300.700.200.200.5~1.10.10.25-0.050.15Margin
50520.250.400.100.102.2~2.80.15~0.350.10-0.050.15Margin
57540.400.400.100.502.6~3.60.300.200.150.050.15Margin
5A050.500.500.100.3-0.64.8-5.5-0.20-0.050.05Margin
50830.400.400.100.4~1.04.0~4.90.05~0.250.250.150.050.15Margin
60610.40~0.80.700.15~0.40.150.8~1.20.04~0.350.250.150.050.15Margin
60820.70~1.30.500.100.4~1.00.6~1.20.250.200.100.050.15Margin
70750.400.501.2~2.00.302.1~2.90.18~0.285.1~6.10.200.050.15Margin

Mechanical Properties

Tensile Strength (MPa)Yield Strength (MPa)Hardness HBElongation Rate (%)
89.6342315-28

Physical Performance

DensityMelting PointModulus of ElasticityThermal Conductivity
2.71 Kg/m³643-675.2 °C68.9 GPa222 W/m.K

Annealing State

BrandAnnealing State
1xxx: 1050,1050A,1060,1100O,H12,H14,H16,H18,H22,H24,H26,H28,H111
3xxx: 3003,3004,3005,3105
5xxx: 5005,5052,5754,5083,5086,5182,5049,5251,5454O,H22,H24,H26,H28,H32,H34,H36,H38,H111
6xxx: 6061,6082T4,T6,T451,T651
2xxx: 2024T3,T351,T4
7xxx: 7075T6,T651

Scope of Application

Aluminum Uses And Application Area
Food PackagingBeverage can ends,cans,bottle caps,etc.
BuildingCurtain walls,cladding,suspended ceilings,thermal insulation,venetian blinds,etc.
TransportationAuto parts,passenger car bodies,aviation ships and air cargo containers.
Electronic EquipmentElectrical appliances,communication equipment,PCPlate drilling guide,lighting and heat dissipation materials,etc.
Consumer GoodsUmbrellas,cooking utensils,sports equipment,etc
OtherMilitary,color coated aluminum plate
© 2026 HongChen Metal. All rights reserved.Powered by HongChen-CMS
+86 15052357278
juniper@hongchen-steel.com
+86 15052357278