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EN AW 5083 Cast Aluminum Mold Plate

What Is EN AW 5083 Cast Aluminum Plate?

EN AW 5083 is a cast aluminum plate from the 5000 series. It is based on an aluminum-magnesium alloy. Compared to other 5000 series cast plates like 5052 or 5754, 5083 offers higher strength and better corrosion resistance, especially in marine environments. That makes it ideal for heavy-duty parts and mold bases.

Cast 5083 plates are often used where flatness and thickness are critical. They are machined from cast aluminum blocks, not rolled. This gives them good dimensional stability and reduced internal stress. EN AW 5083 is a popular choice for shipbuilding, tooling, and structural applications.

EN AW 5083 Chemical Composition and Properties

ElementContent
Magnesium (Mg)4.0 – 4.9%
Manganese (Mn)0.4 – 1.0%
Chromium (Cr)0.05 – 0.25%
Iron (Fe)≤ 0.4%
Silicon (Si)≤ 0.4%
Zinc (Zn)≤ 0.25%
Copper (Cu)≤ 0.1%
Aluminum (Al)Balance
PropertyValue
Density2.66 g/cm³
Yield Strength≥ 215 MPa
Tensile Strength≥ 290 MPa
Hardness65–75 Brinell
Elongation≥ 12%
Corrosion ResistanceExcellent
WeldabilityExcellent

5083 Cast Aluminum Mold Plate

EN AW 5083 aluminum plate size

Name

Thickness

Tolerance of Thickness

Width

Length

EN AW 5083

5mm-600mm

-1.0mm---+1.0mm

30mm-2000mm

50mm-5000mm

 

5083

Stock

5, 10, 20, 25, 30, 35,40,50,60,70,80,

100,120,150,200,

220,260,300,350,

400,450,500,550

-1mm-----+1mm

1250mm*2500mm

1500mm*3000mm

1520mm*3050mm

1650mm*3660mm

EN AW 5083 vs MIC-6 Aluminum Plate vs  K100S Aluminum Plate

1. Composition Comparison

MaterialMain Composition (%)Alloy SeriesProcess
EN AW 5083Al + 4-4.9% Mg + 0.4-1% Mn5000 Series (Al-Mg)Rolled Plate
MIC-6Al + 11-13% Si + trace Fe/CuCast Al-Si AlloyCast + Precision Milling
K100SAl + 3-4% Mg + trace Mn/Cr (similar to 5754)5000 Series (Al-Mg)Rolled/Special Treatment

2. Properties Comparison

PropertyEN AW 5083MIC-6K100S
StrengthMedium (Tensile ~270-320 MPa)Low (cast alloy, non-heat treatable)Medium (similar to 5754, ~200-250 MPa)
Corrosion ResistanceExcellent (especially seawater)Fair (Si prone to oxidation)Good (resists chemical corrosion)
Thermal StabilityPoor (high thermal expansion)Excellent (low expansion, stress-free)Moderate
MachinabilityWeldable, easy to formHigh-precision machining (avoid high heat)Weldable, easy to stamp
Surface QualityRequires post-treatmentMirror-like (directly milled)High flatness

3. Typical Applications

Material Applications
EN AW 5083Shipbuilding, marine platforms, chemical tanks (corrosion resistance + weldability)
MIC-6Semiconductor equipment bases, optical platforms, vacuum chambers (zero distortion + high stability)
K100SMedical devices, food machinery, transportation (balances corrosion resistance and machinability)

4. Alternative Materials

MaterialSubstitutes (Similar Properties)Reason for Substitution
EN AW 50835052 (AlMg2.5)Lower strength but easier to form, suitable for lightweight needs
MIC-6AlSi10Mg (for 3D printing) or A383 (AlSi12)Both are cast Al-Si alloys with similar stability
K100SEN AW 5754 (AlMg3)Nearly identical composition and properties, internationally standardized

5083 Cast Aluminum Mold Plate

FAQ about 5083 aluminum plate:

1. How is 5083 cast aluminum plate made?
It is made by casting aluminum ingots, then cutting and milling them to size. The plate is stress-relieved to improve stability.

2. Can you bend 5083 aluminum?
Yes. 5083 has good formability. But it must be done carefully, especially in thick sections.

3. What is 5083 aluminum used for?
It is used in shipbuilding, mold bases, pressure vessels, and heavy-duty parts.

4. Is 5083 aluminum a specialty metal?
No. It is a standard industrial-grade aluminum alloy, widely used in many industries.

5. What are the different tempers of 5083 aluminum plate?

  • 5083-O – Annealed, soft, easy to form

  • 5083-H111 – Slightly strain-hardened, used for marine parts

  • 5083-H112 – As fabricated, for thick plate applications

  • 5083-H116 – Special temper for excellent corrosion resistance in marine environments

  • 5083-H32 – Hardened and partially annealed, offers good strength and formability


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