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Low-Pressure Aluminum Die Casting

Low-pressure aluminum die castings for structural and semi-structural components requiring dense, consistent grain structure and ISO documentation. ISO 9001 and IATF 16949 certified facilities. DFM review, program management, and quality documentation run from the U.S. team.

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Trusted by Programs across Tier 1 suppliers, Fortune 500 OEMs & hardware startups
  • Honda
  • Libman
  • Mahindra
  • Meyer
  • MIT
  • Amazon
  • Bloom Energy
  • Circor
  • Halliburton
  • Honda
Low-Pressure Aluminum Die Casting capabilities

Technical Capabilities

Review core low-pressure aluminum die casting capabilities, materials, tolerances, inspection methods, and production requirements before requesting a quote.

Production envelope · Verified
Denser, lower-porosity aluminum
01
Low-pressure fill
Minimizes oxide inclusions
02
Bottom-up fill
On qualifying programs
03
X-ray
Materials
Aluminum alloys; specific alloy confirmed at the feasibility review
Process
Low-pressure aluminum die casting
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See Our Process Or same-day technical feasibility review

Production specifications

Fill method
Controlled gas pressure, bottom-up fill to minimize turbulence and oxide inclusions
Internal soundness
Optional X-ray inspection available on qualifying programs
Tolerances
Confirmed against your drawing at the feasibility review
Finishing
As-cast, anodized, powder coated, chromate conversion, plated
Inspection
Dimensional inspection to ISO 9001; X-ray by program
Certifications
ISO 9001, IATF 16949
Standard lead time
4-8 weeks

Production Process

01 DFM Review
02 Tooling
03 Trial Shots
04 Production
Next step

Ready for technical review?

Share your part details, drawings, or CAD files. Redstone will review the requirements and confirm feasibility, tolerances, materials, lead time, and next steps.

  • Feasibility review based on your drawing or CAD file
  • Material, tolerance, and production requirements confirmed
  • Quote reviewed within 24 hours
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Final specifications are confirmed during the technical feasibility review.

Why Redstone

Quality, cost, and a clear fit

Redstone helps hardware teams move from released drawings to repeat production with documented quality, competitive unit costs, and engineering support from the U.S.

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  • ISO 9001 certified facilities
  • U.S.-based engineering support
  • Direct manufacturing partner
Quality

Denser aluminum. Documented to ISO 9001.

Aluminum castings produced via low-pressure fill benefit from reduced turbulence during mold entry. The controlled, bottom-up fill through a riser tube minimizes oxide inclusions and produces a denser, more uniform grain structure than gravity die casting. Every program runs to ISO 9001, with dimensional inspection and a Certificate of Conformance on every shipment.

  • ISO 9001 and IATF 16949 certified facilities
  • Controlled fill reduces oxide inclusions in aluminum
  • Denser, more uniform grain structure versus gravity casting
  • Certificate of Conformance with every shipment
Cost

Structural integrity without high-pressure tooling cost. Quoted landed.

For aluminum parts where density and soundness are specification requirements but high-pressure die casting tooling investment is not justified by volume, low-pressure casting is the right trade. You get denser parts than gravity casting, at tooling costs between gravity and high-pressure. We quote on landed cost, with tooling, freight, and duties in the number before you see it.

  • Lower tooling investment than high-pressure die casting
  • Tooling, freight, and duties quoted up front
  • Unit pricing broken out by volume tier
  • No offshore quote desk between you and the production line
Fit

Is this a fit?

Low-pressure aluminum die casting fits structural and semi-structural components where the customer specifies density, porosity limits, or X-ray acceptance criteria. If you are sourcing aluminum parts on IATF 16949 automotive programs or structural hardware programs that carry porosity documentation requirements, this is worth discussing.

  • Hardware OEMs and Tier 1 automotive suppliers
  • Structural aluminum components with porosity documentation requirements
  • Programs where X-ray or density acceptance criteria apply
  • Re-source programs from gravity casting where quality has not been met
Parts built for production

What we produce

Redstone supports production metal parts across automotive, electronics, industrial equipment, and consumer hardware programs.

Automotive structural components

Automotive structural components

Aluminum sub-assemblies and structural brackets for automotive programs where IATF 16949 documentation and porosity acceptance criteria are required.

Industrial pump and valve housings

Industrial pump and valve housings

Aluminum pressure-retaining housings and valve bodies where wall density and internal soundness are service requirements.

Defense and aerospace-adjacent hardware

Defense and aerospace-adjacent hardware

Structural aluminum castings for programs requiring material traceability, dimensional documentation, and internal soundness verification.

Hardware OEM structural parts

Hardware OEM structural parts

Aluminum brackets, housings, and structural components for hardware programs where gravity casting has not met porosity or dimensional requirements.

From quote to production

A five-step process, documented at every handoff

From initial drawings to final delivery, Redstone keeps each stage clear, documented, and aligned with production requirements.

Each handoff is documented. No stage moves forward until drawings, materials, and production requirements are confirmed with the customer.

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  1. 01

    Submit Your Drawings

    Upload your 3D model or technical drawing with alloy specification, porosity or density requirements, and annual volume. Our engineering team reviews geometry, confirms the aluminum alloy and process suitability, and recommends low-pressure or high-pressure casting before quoting.

  2. 02

    Receive a Quotation

    A detailed quote covering alloy options, tooling cost, unit pricing by volume tier, lead time, and finish options. Tooling, freight, and duties included. One U.S. point of contact, start to finish.

  3. 03

    Tooling and First Article

    Custom dies are designed for controlled low-pressure fill of your aluminum part geometry. The first-article run confirms dimensional results and internal soundness before production release.

  4. 04

    Production Run

    Molten aluminum is fed under controlled gas pressure up through a riser tube into the die, filling from the bottom to minimize turbulence and oxidation. In-process dimensional checks hold consistency across the run.

  5. 05

    Finishing, Inspection, and Delivery

    Castings are cleaned, finished to your specification, and inspected to ISO 9001. Optional X-ray inspection for internal soundness on qualifying programs. Redstone is the importer of record and coordinates freight to your dock with a Certificate of Conformance.

Industries

Industries we cast for

Redstone supports production low-pressure aluminum die casting programs for OEMs and engineering-led teams that require repeatable quality, controlled costs, and reliable part production.

  • Automotive

    Automotive

    Production components for automotive Tier 1 and Tier 2 suppliers and specialty OEM programs, run to IATF 16949 in certified facilities with U.S. engineering oversight from quote through delivery.

    • You run automotive components at production volume, not one-off prototypes.
    • Your program needs IATF 16949 quality and audit-ready documentation.
    • You are a Tier 1 or Tier 2 supplier, or a smaller OEM program that wants production-grade quality without a large-OEM minimum-order gate.
  • Electronics

    Electronics

    Production low-pressure aluminum die casting components for electronics programs, run to documented quality with U.S. engineering oversight.

    • Recurring production volume
    • Documented dimensional inspection
    • One U.S. point of contact
  • Industrial Equipment

    Industrial Equipment

    Cast, machined, and fabricated components for industrial equipment programs, run to ISO 9001 with U.S. engineering oversight from quote through delivery.

    • You run cast, machined, or fabricated components at production volume, not one-off prototypes.
    • Your equipment operates in demanding service environments.
    • You want to consolidate multiple processes with one supplier and one U.S. point of contact.
  • Consumer Products

    Consumer Products

    Production low-pressure aluminum die casting components for consumer products programs, run to documented quality with U.S. engineering oversight.

    • Recurring production volume
    • Documented dimensional inspection
    • One U.S. point of contact
  • Energy

    Energy

    Production low-pressure aluminum die casting components for energy programs, run to documented quality with U.S. engineering oversight.

    • Recurring production volume
    • Documented dimensional inspection
    • One U.S. point of contact

Not sure if low-pressure aluminum die casting fits your part?

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Related capabilities

Related capabilities

Additional manufacturing processes that can support die casting programs, secondary operations, and production-ready metal parts.

CNC Machining

CNC Machining

3, 4, and 5-axis milling and turning from ISO 9001 and IATF 16949 certified facilities.

View capability
Sheet Metal Fabrication

Sheet Metal Fabrication

Laser cutting, bending, stamping, and welding for precision sheet metal components.

View capability
Investment Casting

Investment Casting

Stainless, aluminum, and alloy lost-wax castings with fine detail and tight tolerance.

View capability
Sand Casting

Sand Casting

Aluminum, iron, steel, and brass castings from low-volume runs to large production batches.

View capability

Need help choosing the right process?

Share your part requirements and Redstone can help determine the right manufacturing path.

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Final step

Ready to review your part?

Share your drawings, CAD files, or production requirements. Redstone will review feasibility, materials, tolerances, lead time, and the best manufacturing path for your program.

Request a Quote Talk to an Engineer
  • ISO 9001 and IATF 16949 certified facilities
  • U.S.-based engineering support
  • Quote reviewed within 24 hours
  • Production support across Redstone’s facilities in the U.S., Mexico, and China
Resources

From the engineering desk

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Frequently asked questions

Don’t see your question? Request a quote and our engineering team will answer it.

Why use low-pressure casting for aluminum instead of high-pressure?

High-pressure aluminum die casting injects metal at very high velocity, which can introduce turbulence and trap oxides or gas in the part. Low-pressure casting fills the die more slowly and from the bottom up, which reduces turbulence and produces denser parts with lower porosity. High-pressure casting is better suited to thin-wall, high-volume parts where cycle time is the priority. Low-pressure suits structural parts where density, soundness, and documentation requirements drive the process selection.

What aluminum alloys can be low-pressure die cast?

A range of aluminum alloys can be run via low-pressure die casting. The specific alloy is selected based on your mechanical property requirements, casting geometry, and downstream application. Alloy confirmation is part of Redstone's technical feasibility review.

Is X-ray inspection available for low-pressure aluminum castings?

Yes. X-ray inspection for internal soundness and porosity is available on qualifying programs. The inspection plan is confirmed at the quote stage based on your porosity acceptance criteria.

What certifications apply to this program?

Redstone's foundries for low-pressure aluminum die casting carry ISO 9001 and IATF 16949 certifications. PPAP documentation is available for automotive programs. Certification scope is confirmed at the feasibility review.

What are your standard lead times?

Standard production lead time is 4 to 8 weeks from approved tooling. Tooling and first-article timing are confirmed at the quote stage. Rush programs can be reviewed case by case.