Definition of Aluminum 5083-H111 | 3.3547 | 54300| AlMg4.5Mn0.7
Aluminum 5083-H111 | 3.3547 | 54300 | AlMg4.5Mn0.7 is a strong aluminum alloy mainly made with aluminum and magnesium, with a small amount of manganese. It is well known for its excellent resistance to corrosion, especially around seawater. It also offers good strength, weldability, and machining performance. Because of these properties, it is widely used for marine equipment, vehicle parts, industrial machinery, tanks, structural parts, and CNC-machined components.
Properties of Aluminum 5083-H111 | 3.3547 | 54300| AlMg4.5Mn0.7
| Property | Value |
|---|---|
| Mechanical Properties | |
| Ultimate tensile strength | 210 – 270 MPa |
| Yield strength | 125 – 150 MPa |
| Young’s modulus (modulus of elasticity) | 68 – 72 GPa |
| Elongation at break | 10 – 15 % |
| Physical Properties | |
| Corrosion resistance | Excellent |
| Magnetism | Non-magnetic |
| Weldability | High |
| Thermal Properties | |
| Maximum service temperature | 80 – 100 °C |
| Thermal expansion coefficient | 24 – 25 × 10-6/ºC |
| Thermal conductivity | 118 – 128 W/(m⋅°C) |
| Electrical Properties | |
| Electrical resistivity | 5.85 – 6.05 μΩ*cm |
| ESD Safety | No |
| Post Treatments | |
| Post-Processing | Annealing & Cold working |
| Anodizing compatibility | Suitable |
| Common Applications | |
| Marine industry | Railroad cars |
| Vehicle bodies | Pressure vessels |
Why Aluminum 5083-H111 | 3.3547 | 54300| AlMg4.5Mn0.7 Matters in CNC Workshops
- Excellent corrosion resistance: Aluminum 5083-H111 performs well in seawater, wet conditions, and many harsh industrial environments.
- Good machinability: It can be milled, drilled, turned, and cut with CNC machines to produce accurate parts.
- Strong but lightweight: It provides useful strength without the heavy weight of steel, helping reduce the weight of finished components.
- Good for welded parts: Aluminum 5083-H111 has very good weldability, making it useful when CNC-machined parts must later be joined into larger assemblies.
Surface Finishes for Aluminum 5083-H111 | 3.3547 | 54300| AlMg4.5Mn0.7
As-Machined
The default finish from CNC machining plastic stock (Delrin, nylon, HDPE, ABS). Visible linear tool path scallop marks across machined surfaces with a matte plastic sheen. No secondary operation suitable for functional components, jigs, fixtures, and internal parts where cosmetic appearance is secondary to dimensional accuracy.
Flame Polished
Quick post-fabrication process that passes a controlled flame over acrylic (PMMA) cut edges, melting the surface micro-layer to produce a crystal-clear, glossy, transparent edge. Fast and cost-effective for acrylic sheet edges produces optical clarity on cut borders without the labor of hand polishing. Ideal for display cases, signage, and acrylic enclosures.
Vapor Polished
Post-fabrication chemical process that exposes transparent plastic parts (acrylic, PC, PETG) to solvent vapor, melting and smoothing the surface micro-layer to dramatically improve optical clarity and gloss. Removes machining lines and produces crystal-clear transparent parts — essential for prototype lenses, light guides, display windows, fluidic chambers, and medical components requiring optical transparency.
Painted
Post-fabrication spray painting in any custom color (matte, satin, gloss, metallic) followed by screen printing or pad printing for logos, labels, buttons, and graphics. Applied over a primed plastic surface for uniform color and adhesion. Allows custom fabricated plastic parts to match production aesthetics widely used for control panels, instrument faces, enclosures, and marketing/showcase components requiring exact brand color and graphic printing.
Sanded
Post-fabrication sanding with progressively finer grit sandpaper (typically 240–600 grit) produces a uniform low-gloss matte non-reflective surface. Hides machining marks, scratches, and surface inconsistencies while providing a soft tactile feel. Used for HDPE, UHMW, and nylon components where a durable, non-glare, fingerprint-resistant matte appearance is desired for industrial and functional parts.
Heat Formed
Thermoforming process that heats plastic sheet (acrylic, polycarbonate, ABS) to its glass transition temperature and bends it over a form tool to create precise angles and curved shapes. Produces clean, smooth bend radii with consistent surface finish no tool marks at the bend. Used for display stands, guards, enclosures, signage, and custom fabricated parts requiring 3D formed shapes from flat sheet stock.
