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

Stepped aluminum heat sink with copper contact insert — illustrative concept
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AI & Data Center Cooling

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

Processor cold plates and distribution manifold — illustrative concept
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  1. Cold PlateHeat-source interface
  2. ManifoldCoolant distribution
  3. CDU InterfaceConnection requirements
  4. Rack / LoopAssembly integration
Review component fit across your cooling system.

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

Machined power module cooling plate — illustrative concept
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Materials

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

Engineering Plastics

Match your polymer to function, process and environment.

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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.

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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.›
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sales@lkmfg.com (945) 409-1013

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

Leaded phosphor-bronze bushing, shaft, valve plunger and thrust-washer concepts — illustrative generated component concept
Illustrative component concept

C54400 Leaded Phosphor Bronze Machining for Your Parts

For your C54400 machining project, connect each bore, journal and working shoulder to the part it mates with. Confirm the leaded alloy specification, supplied condition, lubrication and final measurement state before cutting.

UNS C54400Leaded phosphor-bronze reference.
3.0–4.0% PbSelected drawn-product chemistry.
CuSn4Pb4Zn4 / CW456KQualified European comparison.
Your Final FitSpecify bore, journal and working land.

Read Your C54400 Alloy and Stock Requirement

For your C54400 leaded phosphor bronze selection, keep C54400 chemical composition separate from the finished bearing or valve requirement. The material contains lead; identify any material restrictions for your actual project before stock purchase.

Your Material Identity

Your calloutWhat to confirm
UNS C54400Leaded phosphor bronze; ordered product standard and condition required.
CuSn4Pb4Zn4 / CW456KProducer comparison for European drawings; complete product requirements govern.
Machining stockShape, usable diameter, supplied temper, allowance and lot identity.

Review C54400 Bronze Properties in the Supplied State

Cu + named elements ≥99.5% is a combined total, not a pure-copper minimum. C54400 hardness and strength depend on product dimensions and condition; agree the ordered stock rather than applying one generic value to every part.

Selected C54400 Composition

Selected elementDrawn-product reference · wt.%
Lead3.0–4.0
Tin3.5–4.5
Zinc1.5–4.5
Phosphorus0.01–0.50
Iron≤0.10
CopperRemainder

Selected Concast ASTM B139/B139M-12(2024) drawn-product reference; other ordered requirements apply. Not a material-lot analysis report.

Compare Lead Content and Cutting References Separately

Selected Lead Limits and Ranges · wt.%

Concast references · common scale 0–4.5

C54400
3.0–4.0
C51000
≤0.05
C52100
≤0.05
02.254.5

Indicative Machinability

Free-cutting brass = 100 · common scale 0–100

C54400
80
C51000
20
C52100
20
050100

Selected Concast reference data. The lead chart distinguishes bounded ranges from maximum limits. A machinability index is not a cycle-time, cost, tool-life or bearing-life ratio. A material composition is not approval of your finished product, and a grade name does not establish self-lubrication.

Concast C54400 ↗ Concast C51000 ↗ Concast C52100 ↗ Wieland B44 European comparison ↗

Resolve 6 Drawing Decisions Before Production

Define the Edge at the Actual Contact

Specify allowable edge breaks on oil recesses, washer lands and hole exits. Agree first-sample edge acceptance before repeating quantities.

01 · Requirement

Show the working feature and allowed edge condition.

02 · Route

Agree stock, support and final surface.

03 · Evidence

Inspect the actual finished state.

Confirm stockMachineFinish if specifiedInspect
Bronze thrust washer working-land and edge review — illustrative generated component concept
Illustrative component concept

Match Your C54400 Part to Its Working Requirement

Select the bushing, shaft, valve component or washer. Review its actual mating features and accepted final state.

Start with Your Mating Features

For your custom C54400 bushings, define the shaft and housing before selecting the final bore. Agree the installation state, oil-port position and accepted running surface.

Your decisionWhat to define
Your fitBore, flange datum, housing fit, radial port and shaft relationship.
Your routeStock condition, support and finishing sequence.
Your approvalFinal geometry, surface and receiving evidence.
A bronze short square-flange bushing with central through bore, two unequal external steps, four corner bolt holes and one radial oil port concept — illustrative generated component concept
Illustrative component concept

Plan Your C54400 Route Around the Working Fit

For your C54400 machining services inquiry, connect setups, stock allowance, edge removal and final measurement to the same drawing revision. The reviewed quote confirms operations and evidence scope.

Turning a supported bronze shaft journal — illustrative generated component concept
Illustrative component concept

C54400 Turning

Review supported journals, bores and shoulder relationships.

Review the Process →
Milling a supported bronze valve mounting ear — illustrative generated component concept
Illustrative component concept

C54400 Milling

Define mounting pads, open slots and accessible working datums.

Review the Process →
Drilling a supported bronze bushing flange — illustrative generated component concept
Illustrative component concept

C54400 Drilling

Back the flange and agree hole exits, oil-port access and chip removal.

Review the Process →
Bronze valve insert thread and sealing shoulder concept — illustrative generated component concept
Illustrative component concept

C54400 Threading & Boring

Specify thread form, run-out, bore length and final gauge access.

Review the Process →

Protect Your Final Working Surface

As-machined bronze sleeve surface concept — illustrative generated component concept
Illustrative component concept
As Machined
Clean bronze thrust-washer contact surface — illustrative generated component concept
Illustrative component concept
Accepted Edge Condition
Specified masking on bronze valve adapter concept — illustrative generated component concept
Illustrative component concept
Specified Masking
Bronze shaft in separate protective packing — illustrative generated component concept
Illustrative component concept
Protected Delivery

Illustrative concepts. Agree contact texture, accepted edges, cleaning and handling protection. Plating or other coating requires a separate substrate, masking, thickness and final-fit review.

Surface Finishing →

Confirm the Actual Bearing or Valve Requirement

Your checkWhat to approve
Material restrictionC54400 is a leaded alloy; identify the actual application requirement.
LubricationSpecify movement, lubricant, access and mating material.
Final geometryConnect bore, journal, working face and mounting datums.
European comparisonCuSn4Pb4Zn4 / CW456K; full product requirements and drawing approval govern.

A stock alloy and a cutting index do not establish assembly performance or automatic replacement.

Bronze Alloy Overview →

Check Your C54400 Part at 3 Stages

01 · Material

Grade, product standard and supplied state.

02 · First Sample

Supported dimensions and accepted edges.

03 · Final Release

Final function requirements and receiving records.

Approve the Complete Working Feature

Review the full bore or journal length, mounting datum, accepted edges and final surface on a complete first sample before repeat quantities.

  • Material identity, stock form and supplied condition.
  • Controlled working and locating geometry.
  • Agreed surface protection and receiving records.

Sampling and evidence scope are agreed with your quote.

Quality Assurance →
First-sample bronze bushing datum inspection — illustrative generated component concept
Illustrative component concept
LK Dongguan factory exterior — user-supplied photograph
LK Dongguan factory · user-supplied photograph

Coordinate Your Drawing and Receiving Requirements

Connect China manufacturing with Dallas-area coordination for drawing review, sample decisions and delivery requirements.

6 Inputs for Your C54400 Quote

01CAD + drawing + shaft and housing details
02UNS C54400 + product standard
03Stock shape + dimensions + supplied condition
04First order + repeat quantities
05Bores + journals + threads + working surfaces
06Free/installed acceptance + material records

Compare Your Quote on the Same Basis

Your C54400 machining quote should compare the same material, drawing revision, final fit, surface and receiving evidence.

Answers Before You Specify C54400

What is C54400 bronze?

C54400 is a leaded phosphor-bronze designation used for specified wrought-product and machined-component applications. Order exact stock form, product standard and supplied condition before agreeing final geometry.

Is C54400 difficult to machine?

For C54400 machinability, selected Concast data lists an indicative index of 80 on the free-cutting-brass scale. Actual stock, geometry, support, cutting and finish requirements still determine the route; it is not a time or cost ratio.

What information is needed for a C54400 machining quote?

Send controlled CAD and drawing, exact alloy and product standard, stock form and supplied condition, quantities, mating details, working surfaces and material-record requirements. Include any defined functional test.

What tolerances can be achieved machining C54400?

Provide feature limits, datums, full bore or journal length and the accepted measurement state. Your quotation confirms reviewed acceptance for the actual geometry; no universal tolerance is assumed.

How to specify C54400 material certification?

State the ordered product standard, supplied condition, lot traceability and required certificate content. Keep material identity separate from dimensional, wear, leak or pressure-test evidence.

Does C54400 contain lead?

Yes. Selected Concast drawn-product chemistry lists 3–4 wt.% lead. Confirm the actual ordered material and any project-specific restrictions before buying stock; a grade name does not approve a finished product.

Is C54400 automatically self-lubricating?

No universal self-lubrication claim is made. Specify the mating material, load, movement, lubricant, access and environment. Solid wrought stock is not the same material route as an oil-impregnated sintered bearing.

Can CuSn4Pb4Zn4 / CW456K replace the UNS callout?

Wieland and bedra identify this as a comparable C54400 designation. Confirm the full product specification, chemistry, supplied state and drawing-authority approval before replacement.

Bronze → CNC Machining →