English

Which aluminum alloys are commonly used for die casting parts?

Table of Contents

When should buyers consider A380 and ADC12/383?

When do 360, A356, and B390 change the material decision?

How do part geometry, tolerances, and finishing affect alloy choice?

What RFQ details help Neway recommend an aluminum die casting alloy?

Related FAQs

Common aluminum alloys for die casting parts include A380, ADC12/383, 360, A356, B390, and other cast aluminum grades selected by part function. The practical RFQ problem is to match the aluminum die casting alloy to the part type, wall thickness, strength requirement, corrosion exposure, wear behavior, machining scope, surface finish, inspection method, and production volume before tooling is quoted.

Which aluminum alloys are commonly used for die casting parts?

The most common aluminum die casting alloy discussions include A380, ADC12 or 383, 360, A356, and B390. These alloys are not interchangeable because each grade balances castability, strength, corrosion behavior, wear behavior, machinability, surface finish, and cost differently.

Buyers should start with the part requirement, not only the alloy name. A thin-wall electronics housing, a heat sink base, a motor housing, a mounting bracket, and a wear-related component may need different material logic even when all use aluminum die casting.

Aluminum Die Casting Alloy	Common Part Direction	Buyer Decision to Confirm
A380	General housings, covers, brackets, and industrial die cast parts	Whether the part needs balanced production practicality and broad castability
ADC12 or 383	Feature-rich parts where filling behavior and production stability matter	Whether thin walls, ribs, bosses, and complex geometry drive alloy selection
360	Parts reviewed for corrosion-related or pressure-related requirements	Whether the service environment requires corrosion-focused material review
A356	Structural parts reviewed for mechanical performance	Whether strength, load, or structural duty is a higher priority
B390	Wear-related aluminum die casting applications	Whether wear surfaces justify a specialized alloy review

When should buyers consider A380 and ADC12/383?

A380 and ADC12/383 are common starting points for many custom aluminum die cast parts. A380 is often reviewed when the project needs a balanced material for housings, covers, brackets, frames, and general OEM components. ADC12/383 is often reviewed when the design has thin walls, ribs, bosses, or feature-dense geometry that requires strong mold filling behavior.

The RFQ should still define part function, alloy requirement, wall thickness, surface finish, machined features, and inspection needs. A common alloy does not remove the need for die casting design review, tooling review, and secondary operation planning.

For a focused comparison, see how buyers should choose between A380 and ADC12 aluminum die casting.

When do 360, A356, and B390 change the material decision?

360, A356, and B390 change the material decision when the part has a clear performance driver beyond general production practicality. The driver may be corrosion exposure, strength, structural load, wear behavior, heat, or a service condition that makes a standard starting alloy less suitable.

Buyers should state the reason for reviewing a specialized alloy. If corrosion matters, define the environment and finish. If strength matters, provide load direction and assembly conditions. If wear matters, identify contact surfaces and motion. If thermal behavior matters, identify thermal contact faces and surface condition.

How do part geometry, tolerances, and finishing affect alloy choice?

Part geometry, tolerance targets, and finishing requirements can affect aluminum die casting alloy choice. Thin walls, deep ribs, large flat surfaces, bosses, undercuts, and cosmetic faces may change how Neway reviews filling, shrinkage, porosity risk, ejection, and tooling layout.

Tolerances should be connected to function. Threads, bores, sealing faces, bearing seats, mounting datums, and thermal contact faces may need CNC machining after casting. Surface finishes such as painting, powder coating, anodizing when suitable, conversion coating, polishing, or as-machined surfaces can also influence alloy and process planning.

Buyer Requirement	Alloy Selection Impact	RFQ Information to Provide
Thin-wall or detailed geometry	May prioritize fill behavior and process stability	3D CAD, wall thickness, ribs, bosses, and critical feature notes
Structural load	May require strength-focused alloy review	Load condition, mating parts, datums, and inspection plan
Corrosion exposure	May require alloy and finish review together	Environment, finish type, salt or chemical exposure if applicable
Machined precision features	May affect material, tooling, and CNC finishing route	Machined feature list, tolerance, roughness, and CMM requirement
Cosmetic finish	May affect surface preparation and process consistency	Visible zones, finish requirement, color, texture, and defect criteria

Neway can recommend an aluminum die casting alloy more accurately when the RFQ includes the part application, 3D CAD model, 2D drawing, preferred alloy or performance target, annual volume, wall thickness, critical dimensions, machined features, surface finish, corrosion exposure, load condition, inspection method, and packaging needs.

If the buyer is unsure which alloy to use, the RFQ should explain the buyer decision. Is the priority castability, strength, weight, corrosion resistance, wear behavior, heat transfer, machining, surface finish, or cost control? Clear priorities help Neway connect alloy selection with tooling, process control, secondary operations, and production inspection.

For broader material and part planning, see materials commonly used in aluminum die casting services, types of aluminum die casting parts Neway can manufacture, and what information is needed for an aluminum die casting service quote.