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Thermal Technologies

Choose air- or liquid-cooling components around your thermal and mechanical requirements.

Stepped aluminum heat sink with copper contact insert — illustrative concept
Explore Thermal Technologies

Heat Sinks

Liquid Cooling

AI & Data Center Cooling

Manufacturing support for your cold plates, manifolds and cooling assemblies.

Processor cold plates and distribution manifold — illustrative concept
Explore AI Cooling

AI Compute Cooling

Distribution & Assembly

AI Cooling Interfaces
  1. Cold PlateHeat-source interface
  2. ManifoldCoolant distribution
  3. CDU InterfaceConnection requirements
  4. Rack / LoopAssembly integration
Review component fit across your cooling system.

Industry Cooling Solutions

Find components for your power electronics, energy, laser and telecom application.

Machined power module cooling plate — illustrative concept
Explore Industry Cooling

Power Electronics

EV & Energy

Laser & Telecom

Industries

High-Tech & Electronics

Components for your electronic systems.

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Applications & Project Inquiries

Precision & Advanced Systems

Start with your functional and quality requirements.

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Applications & Project Inquiries

Industrial & Energy

Build around your operating environment.

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Applications & Project Inquiries

Materials

From prototype to production, review material performance, manufacturability and cost for your part.

Engineering Plastics

Match your polymer to function, process and environment.

→
ABS — illustrative material conceptABSReview enclosure and molding needs›Polycarbonate (PC) — illustrative material conceptPolycarbonate (PC)Discuss clarity and impact needs›Nylon (PA) — illustrative material conceptNylon (PA)Review moisture and wear conditions›POM / Acetal — illustrative material conceptPOM / AcetalReview fit and sliding features›PEEK — illustrative material conceptPEEKDiscuss operating conditions›PTFE — illustrative material conceptPTFEReview friction and chemical exposure›ULTEM / PEI — illustrative material conceptULTEM / PEIDiscuss thermal and electrical needs›

Elastomers & Specialty Materials

Confirm grade availability and application requirements.

→
Elastomers
Silicone / LSR — illustrative material conceptSilicone / LSRDiscuss flexible component needs›TPU / TPE — illustrative material conceptTPU / TPEReview flexibility and processing›EPDM — illustrative material conceptEPDMReview weathering and chemical exposure.›NBR — illustrative material conceptNBRReview oil and fuel exposure.›FKM — illustrative material conceptFKMReview temperature and chemical exposure.›
Specialty Materials
G10 / FR4 — illustrative material conceptG10 / FR4Review insulation and laminate needs›Composites — illustrative material conceptCompositesReview stiffness, weight and laminate.›Customer-Specified MaterialsConfirm your grade and requirements.›Other Specialty MaterialsDiscuss your application and grade.›
Resources

Design & Engineering

Practical guidance for your part geometry and material decisions.

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Cost & Planning

Prepare your process, budget and sourcing questions.

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Learn & Proof

Build your knowledge before production.

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About Us

About LK MFG

Learn who we are and how we operate.

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Get in Touch

Find our U.S. support team or start a conversation.

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sales@lkmfg.com (945) 409-1013

1750 Briercroft Ct, Suite 204
Carrollton, TX 75006, USA

Blue finned heat sink, silver hollow housing and purple slotted channel — illustrative 6063 component concepts

FOR YOUR PROFILE, FINISH AND FINAL FIT

6063 AluminumFor Your Custom Machined & Extruded Parts

For your 6063 aluminum CNC machining project, connect the profile, T5/T6 condition and finished features before ordering. Review your section drawing, secondary machining and appearance as one part specification.

Illustrative component concepts. Alloy and finish are specified for your order.
01

Section

Existing profile or a new extrusion die?

02

Condition

Confirm the temper and product specification.

03

Features

Separate extruded and machined dimensions.

04

Finish

Define color, masking and final fits.

05

Evidence

Agree material and inspection records.

Hollow aluminum multi-cell extrusion and machined mounting slots — illustrative profile concept
Constant section first; local features are reviewed for later machining.

YOUR MATERIAL DECISION

6063 Aluminum Properties for Your Finished Profile

For custom 6063 aluminum parts, start with the section your assembly needs. 6063 is a candidate for hollow profiles, visible housings and finned sections where extrusion and finishing matter together.

Your load, wall layout, straightness, mating features and environment still control the choice. A material name does not define a finished-part tolerance or thermal result.

Repeat the section

Review die feasibility and cut length.

Machine the interfaces

Locate bores, slots and end faces.

Protect the appearance

Agree visible faces and packaging.

Aluminum Extrusion →

COMPOSITION + CONDITION

6063-T5 vs 6063-T6: Specify the Condition You Need

Keep composition, temper and the applicable product standard on the same purchase order.

6063 T5 Aluminum

Cooled after an elevated-temperature shaping process and artificially aged. For 6063-T5 aluminum parts, confirm the supplied section and its material record.

6063 T6 Aluminum

Solution heat-treated and artificially aged. For 6063-T6 aluminum parts, define the required final condition, including effects of later welding or heat.

6063 Chemical Composition Limits

ElementWeight %ElementWeight %
Silicon (Si)0.20–0.60Magnesium (Mg)0.45–0.90
Iron (Fe)≤0.35Copper (Cu)≤0.10
Manganese (Mn)≤0.10Chromium (Cr)≤0.10
Zinc (Zn)≤0.10Titanium (Ti)≤0.10
Other: each≤0.05Other: total≤0.15
Aluminum (Al)RemainderBasisMaximum unless a range is shown

Weight percentages. “Remainder” identifies the aluminum balance; it is not a separate purity guarantee. Confirm the applicable material specification and lot certificate.

Selected Extruded Strength Limits

Condition / test-section thicknessUTS min.0.2% yield min.Elongation min.
T5, ≤12.50 mm150 MPa110 MPa8%
T6, ≤3.20 mm205 MPa170 MPa8%

These are source minimum levels for the listed test-section ranges, not universal typical values. Test-section thickness determines the applicable limits. Elongation is in 2 inches or 4× specimen diameter; the source exempts some small/thin shapes from elongation testing.

Thermal, electrical and physical reference
Property / conditionReference value
Typical thermal conductivity, 25 °C — T5 / T6209 / 201 W/(m·K)
Typical electrical conductivity, 20 °C — T5 / T655 / 53% IACS
Density0.097 lb/in³
Melting range1140–1210 °F
Average linear thermal expansion, 68–212 °F13.0 × 10⁻⁶ in/(in·°F)

Conductivity values are typical, not a heat-sink rating or finished-part guarantee. Temperature, geometry and test conditions matter.

Sources: Hydro Alloy 6063 data, Rev. 2026/01 (06/2026); AEC temper definitions. Different limits apply to other thicknesses and conditions. Neither table authorizes an unapproved T5/T6 substitution.

6 Checkpoints from Your Section Drawing to Repeat Parts

01

Release the section

Supply the profile cross section, length and current drawing revision.

02

Confirm the starting route

Identify an existing extrusion, customer-supplied stock or a new die.

03

Set the material baseline

Agree 6063, temper, product form and required material document.

04

Machine the local features

Define datums, clamping, holes, slots, end faces and burr limits.

05

Approve the finished part

Check dimensions in the specified finish state and appearance sample.

06

Retain the repeat baseline

Keep the approved revision, finish reference and change record.

Resolve 8 Profile Risks Before Machining

Use the topic that controls your assembly. These review checks are tailored to your drawing.

01

Choose the Reference Before You Clamp

Use stable assembly references for 6063 aluminum secondary machining. Distinguish an extruded face from a machined datum and agree how the part is supported.

  • Name the inspection datum scheme.
  • Keep mating features related on the finished drawing.
DFM & Drawing Review →
Datum referencesReview schematic · not to scale

SURFACE + ASSEMBLY

Choose Your Finish Around the Final Part

Resolve appearance and fits together, before your parts are processed.

Anodized 6063 Aluminum Parts

Specify the type, color reference, thickness and sealing with your appearance and dimensional requirements. Define visible faces and allowable racking marks.

  • Identify cosmetic, sealing and contact surfaces.
  • Approve a sample, masking plan and final dimension state.
Anodizing →

Illustrative finish concept; color does not identify alloy or temper.

Anodized 6063 Aluminum Parts — illustrative finish concept

3 Application Reviews for Your 6063 Profile

6063 Aluminum Heat Sink — illustrative part concept

6063 Aluminum Heat Sink

For your power-electronics profile, review fin geometry, base thickness, airflow and the thermal interface. The alloy designation alone does not establish a heat-dissipation rating.

6063 Aluminum Extruded Housing — illustrative part concept

6063 Aluminum Extruded Housing

For a 6063 aluminum electronic enclosure, define board guides, connector ports, covers and mounting faces. IP, EMC or other product ratings require their own design and verification.

6063 Aluminum LED Heat Sink — illustrative part concept

6063 Aluminum LED Heat Sink

Review the LED mounting bed, installation space, cooling path and operating conditions. Mark the contact face and finish requirements before machining.

Illustrative component scenarios, not customer cases, certified assemblies or tested thermal results.

COMPARE THE SAME SUPPLIED SCOPE

5 Cost Drivers You Can Resolve Before Quoting

  1. Profile route Existing stock, customer-supplied extrusion or a new die.
  2. Machining Cut length, local features, setups and material removal.
  3. Quantity Trial parts, repeat demand and release schedule.
  4. Finish Color, masking, appearance sample and handling protection.
  5. Verification Measurement, documentation and packaging requirements.

For 6063 aluminum prototype machining, identify what the sample must prove and how the intended production section will be represented.

Value Engineering →
Individually protected finished aluminum profiles — illustrative packaging concept
Protect exposed faces and separate parts for the agreed handling route.
CNC end mill and supported hollow extrusion — illustrative machining concept
Illustrative machining concept. Actual setup and feasibility are part-specific.

YOUR SECTION + YOUR LOCAL FEATURES

6063 Aluminum Extrusion Machining

For custom 6063 aluminum extruded parts, extrusion can establish the continuous section. CNC operations then create local holes, slots, end faces and assembly interfaces.

6063 aluminum extrusion CNC machining needs a controlled relationship between the starting profile and final drawing. Distinguish cut length, raw profile variation and the finished features you will inspect.

6063-T5 CNC Machining

Confirm stock condition, wall support and burr acceptance for your supplied profile.

6063-T6 CNC Machining

Review the final condition, removal pattern and features that control assembly.

FOR YOUR RECEIVING TEAM

Agree 6 Checks Before Your 6063 Parts Ship

Keep identity, dimensions and appearance evidence separate and traceable.

01

Material callout

6063, temper, product form and the applicable purchase standard.

02

Profile condition

Section dimensions, cut length, straightness or twist where specified.

03

Machined features

Datums, holes, slots, threads and final inspection condition.

04

Finished surface

Color/texture reference, masking and required checks.

05

Records

Material documents, lot linkage and dimensional report scope.

06

Protection

Handling, separators, identification and packing requirements.

CMM probe and fixtured aluminum profile — illustrative inspection concept
Illustrative measurement concept, not an actual inspection report.

COORDINATE YOUR OPEN DECISIONS

Your Profile Review, Manufacturing and Handoff

Bring your drawing, supply route and delivery requirements to the same project review. China manufacturing and Dallas-area coordination are confirmed in your quotation.

01

Your contact

Coordinate profile questions, drawing revisions and approval decisions.

02

Your scope

Agree extrusion, machining, finish and supplied records.

03

Your sample

Record dimensions, appearance and accepted exceptions.

04

Your delivery

Confirm packing, delivery location and release requirements.

Genuine LK Dongguan factory exterior
Genuine LK Dongguan factory exterior. Project route and location are confirmed in your quotation.

6 Inputs for Your Custom 6063 Parts Quote

01Cross-section drawing, CAD and controlled finished-part revision

026063, temper, product specification and permitted alternatives

03Existing profile, customer stock or new die requirement

04Cut length, trial quantity and repeat demand

05Critical fits, datums, finish, masking and visible faces

06Inspection records, packing and delivery requirements

For 6063 aluminum machining services, identify open requirements before comparing quotations.

Your Questions Before Ordering 6063 Aluminum Parts

Is 6063 aluminum good for CNC machining?

6063 aluminum machined parts can be reviewed for suitable pockets, slots, holes and end features. Feasibility depends on temper, section support, access, removal volume and finished tolerances. Compare the complete route with an extrusion-led or stock-machining alternative.

What is the difference between 6063-T5 vs 6063-T6?

T5 is cooled from an elevated-temperature shaping process and artificially aged; T6 is solution heat-treated and artificially aged. Confirm the required product form, specification and material certificate. The temper code alone does not establish one strength value for every section.

Can 6063 aluminum be anodized?

6063 is commonly considered for anodized profiles. Specify the process, thickness, sealing, color reference and masked areas together. Surface preparation and material condition affect appearance; approve a representative sample.

Is 6063 aluminum good for heat sinks?

It is a candidate for extruded fins and bases. Thermal performance depends on heat input, fin and base geometry, airflow, mounting and the thermal interface. Use a design calculation or test for the actual operating condition.

What files are needed for a custom 6063 parts quote?

Supply the section drawing and CAD, controlled finished drawing, temper and specification, cut length and quantities, critical dimensions, finish, documentation and delivery requirements. State whether an existing section or a new extrusion die is required.

What tolerances can machined 6063 extrusions achieve?

Review the actual drawing. Separate raw-profile dimensional, straightness and twist requirements from local machined-feature tolerances. Geometry, support, length, finish and measurement condition determine feasibility; no single tolerance applies to every extrusion.

What should you ask a 6063 aluminum parts manufacturer?

Ask how the starting section and temper are verified, which revision controls machining, which dimensions apply after finishing and what material, inspection and packing records are supplied. Confirm substitutions and exceptions before manufacture.

How do you review a 6063 aluminum enclosure manufacturer?

Compare section feasibility, board and cover interfaces, connector machining, visible finish and assembly checks. A material choice does not automatically provide IP protection, EMC performance or a qualified product rating.

Do custom 6063 aluminum profiles need a new die?

An available section may suit your requirements; a unique cross-section may need a new die. Review section geometry, die scope, ownership, trial quantities and repeat demand. Die cost and minimum order terms are project-specific.

Can you weld 6063 aluminum parts?

Suitable joining procedures can be reviewed, but welding can reduce strength in heat-affected regions of heat-treated material. Confirm the joint, filler, required final properties, distortion and surface treatment with the design authority.

3 Approvals Before Your Repeat Order

01

Your drawing baseline

Release the section, material callout, machined features and accepted deviations together.

02

Your sample acceptance

Record the agreed dimensional, fit and appearance results with any open exceptions.

03

Your repeat scope

Keep the finish reference, inspection plan, packing and change-control requirements.