? Where is your part right now?

Not made yetOne shop: we machine the part and plate it in the same order, so the surface that leaves the machine is the surface that goes into the bath. Nickel plating adds a layer, so any critical dimension has to allow for it before the part is cut - not after.See the processes we run →Already madeSend the finished parts and say which faces are cosmetic and which are masked. Electrolytic nickel coats the faces the current can reach, so the base metal and the target thickness are best agreed before the parts arrive.Check if my parts qualify →Still comparing finishesNickel plating here means the electrolytic route - nickel deposited by an electric current. If the part is a complex shape, or the base metal does not conduct, the electroless route is the one to compare it against.Which route do I need? →

SURFACE FINISHING

Nickel Plating

Bright, smooth finish 5 published materials By electrolysis, not electroless Automotive and fasteners

Nickel plating develops a thin layer of nickel on the metal part. The nickel layer enhances the mechanical strength, hardness, wear resistance, lubricity and ductility, and after finishing the surface also becomes brighter. The same process can be run two ways - with the help of electrolysis and without - and both aim to make the parts highly resistant to corrosion. This page covers the electrolytic route, where the nickel is deposited by an electric current.

Get a quote Compare with electroless nickel

2 methodsThe published description names electrolysis and the current-free route

5 materialsABS, aluminium, brass, stainless steel and steel in our published table

3 um to 12 umThe two published thickness bands, still to be split and confirmed

BrighterThe published change after the nickel layer is applied

A group of machined metal parts with a bright nickel-plated finish, their surfaces reflecting the light — Nickel plating adds a layer rather than changing the metal itself. The published colour runs from clear to matte to black, and the published texture is a smooth finish - so the part is judged on the layer laid over it, not on the metal beneath.

Where it fits

Nickel plating in 5 steps: from a machined part to a bright nickel surface

Electrolytic nickel plating is a line process: the part is cleaned, activated, coated in the bath while current flows, then rinsed and inspected. Each step helps decide how even and how bright the layer comes out.

STEP 1Machine the partThe cutter sets the geometry and the base surface; the published colour and texture are decided later, at the bath

STEP 2Clean and activateOil, oxide and handling film are removed so the nickel can bond to the base metal

STEP 3Deposit the nickelYou are here - current passes through the electrolyte and nickel builds up on the part, face by face

STEP 4Rinse and dryThe bath chemistry is rinsed off before the part is handled, so it does not stain or streak

STEP 5Inspect the layerThickness, brightness and coverage are checked against what was agreed

Nickel plating is the electrolytic route: the layer is built up by current, part by part. The same nickel can also be laid down chemically, with no current at all - that is the electroless route, and it is the one to compare when the part is a complex shape. See which route fits.

Parts racked in a nickel plating tank as current passes through the electrolyte to deposit the nickel layer

In the electrolytic route the part is the cathode: current drives nickel out of the solution and onto the surface. The longer the part stays in the bath, the thicker the layer.

An industrial nickel plating line with a row of process tanks, hangers and a transfer carriage above the bath — A plating line runs the part through a sequence of tanks. Cleaning, activation, plating and rinsing happen in order, without the part leaving the line.

A rectangular plating tank filled with green nickel electrolyte, with pipes feeding the bath — The chemistry of the bath helps set the colour and the brightness of the layer, so the bath is monitored rather than topped up and left.

Aluminium handheld brackets with a bright nickel finish, laid out after plating — Aluminium is one of the published materials for this process. It is a soft, reactive base metal, so the pre-treatment before plating is what decides whether the layer holds.

Fit check

Can we plate it? The base metal, the shape and the electrical contact decide

Electrolytic nickel needs a conductive path to the part and a shape the current can reach evenly. Those two things, plus the base metal, are where most plating jobs are won or lost.

Base metal

Published table - ABS, aluminium, brass, stainless steel and steel are the five materials listed for this process
The published text also names steel, aluminium, copper and brass as materials it applies to
The table lists ABS but not copper; the text lists copper but not ABS - both are shown as published and the gaps are being confirmed
Nickel needs the base metal to conduct. A plastic such as ABS has to be made conductive before it can be plated, and that pre-treatment is the part to confirm

The table lists ABS and the text lists copper. Both are shown as published; the plastics route is To confirm.

Shape and reach

Flat and open faces plate most evenly; deep recesses, sharp inside corners and inside bores are harder for the current to reach
A face the current reaches weakly gets a thinner layer than an exposed face - throwing power, not the bath, sets this
Barrel or rack plating is chosen by shape: small parts run in a barrel, larger or single parts run on a rack
If the part cannot be racked with a good contact, the layer can come out uneven or bare at the contact point

Tell us about bores, recesses and faces that must be fully covered before the parts are quoted.

Uniformity and thickness

The published thickness is written in two bands, 3 um to 8 um and 8 um to 12 um, with no label saying which applies when
On a complex shape the electrolytic layer varies across the part, which is exactly the case the electroless route is chosen for
The two published thickness bands are shown side by side here rather than picked, because the page does not say which one applies when
A tight tolerance on a plated face has to allow for the layer that is added

The two thickness bands are both published and are being split and confirmed - no single number is assumed.

Specifications

Nickel plating: 5 materials, 3 colours and one bright finish

Every value below is what we publish for this process. Where the page gives two answers, or the shop has not confirmed a figure, the line says so instead of picking one.

Base materials (published table)

5 listedABS, aluminium, brass, stainless steel and steel - the five in our table for this process

Copper (published text)

Named in the textThe published description also names copper, which is not in the table - being confirmed

Plastics (ABS)

Published - pre-treatment requiredABS is in the table, but nickel needs a conductive surface, so a plastic has to be made conductive first - being confirmed

Thickness (published)

3-8 um and 8-12 umWritten as two bands side by side with no label; both are shown and which one applies is being confirmed

Colour (published)

clear, matte, blackAs published - note that matte sits against the published smooth texture, so the exact appearance is being confirmed

Texture (published)

Smooth finishAs published for this process

Deposition method

Electrolytic (by current)This page covers the electrolytic route; the current-free route is electroless nickel plating

Standards

To confirmThe published page carries no standards line for this process; the standard it is run to is being confirmed

The line that matters most: the published thickness is written as two ranges - 3 um to 8 um and 8 um to 12 um - with nothing to say which applies. Both are shown here and neither is assumed, because picking one would be inventing a specification the page does not make. The same applies to the colour word matte sitting against a smooth texture: it is carried as published and flagged rather than smoothed over.

Dimensional change

Nickel plating adds a layer: the thickness comes out of your tolerance

Unlike polishing or blasting, nickel plating grows the part. The layer is thin, but on a face held to a tight tolerance it is the whole allowance - so it has to be planned before machining, not measured after.

Where it acts	What changes	Why it matters	What to do
Every plated face	The part grows by the layer thickness	A dimension measured after plating is larger than the same dimension before it.	Allow for the layer on any plated face - add it before the part is machined.
Threads and fits	Pitch diameter tightens as the layer builds	A thread plated after tapping may no longer accept its mating part.	Name the threads that must run to size; plated threads are often left undersized or masked.
Bores and holes	A bore gets smaller	A layer on the inside of a bore reduces the clearance.	State the bore tolerance and whether the inside should be plated at all.
Contact points	No plate where the part is held	The rack contact that carries the current leaves a small unplated mark.	Say where a contact mark is acceptable - it is a normal part of rack plating.
Sharp edges	The layer builds faster on edges	A sharp edge attracts more current and can take a thicker, rougher deposit.	Deburr edges before plating so the layer builds evenly.
Pre-plate size	The finish is a before-and-after decision	A face machined exactly to nominal has no room for the layer.	Mark dimensions as before or after plating on the drawing.

The direction of the change is known - the layer adds material and the part grows - but the exact thickness is published as two bands and is being confirmed. A plating allowance has to be agreed with the shop, not assumed.

Tell us which dimensions are critical and which are cosmetic, and we will confirm the plating allowance before the parts are made.

Get a quote

Which route

Which route: electrolytic nickel, electroless nickel, or zinc

Nickel can be laid down by current or without it, and for a plain corrosion duty there is a lower-cost metal than nickel. The last card below is the case where nickel plating is the wrong answer.

An illustration of how nickel electroplating works, with the part and the nickel anode in the bath

Electrolytic nickel plating

This page - nickel by current

The part is the cathode and nickel anodes sit in the electrolyte. Current drives nickel onto the surface, building the layer face by face. This is the route this page covers.

Best for: parts that can be racked or barrelled, a bright decorative layer, wear and corrosion resistance on steel, brass and copper

Not for: a non-conductive base without a conductive pre-treatment, or a complex shape that needs a dead-even layer.

Electroless nickel plating

Nickel without current

The published text names two methods that share one goal, a corrosion-resistant nickel layer, but they are different processes. Electroless nickel is deposited chemically, with no current, so it covers complex shapes and inside faces far more evenly.

If the part is a complex shape, has deep recesses, or the base metal is not conductive, that is the comparison to make.

Best for: complex shapes, a uniform thickness over a whole part, non-conductive substrates

Compare: electroless nickel plating when even coverage matters more than the bright electrolytic look.

Zinc-plated screws with a blue-white zinc coating, shown as the corrosion-protection alternative to nickel

Zinc plating

The cheaper corrosion finish

Where the only job is to stop a steel part rusting, zinc is the common and lower-cost answer. Nickel is chosen instead when the part also has to look bright, resist wear, or act as a wear surface.

Best for: sacrificial corrosion protection on steel fasteners and brackets, at lower cost than nickel

Compare: zinc plating for a pure corrosion duty, and zinc vs nickel plating for the trade-off.

A complex electroplated part with recesses and inside faces, where reaching an even coating is hardest

When nickel plating is the wrong route

The not-applicable case

Nickel plating deposits a metal layer for corrosion, wear and appearance. Some parts need the opposite - no added metal, a matte or non-metallic look, or a coating that is not conductive.

Consider instead: a chemical conversion finish for no added layer, or the electroless route for even coverage

Not for: a complex shape or inside faces that must be covered dead-even (use electroless nickel), a non-conductive base with no conductive pre-treatment, or a part that must stay non-metallic or keep a matte, non-reflective look.

Tell us whether the part needs a bright metal layer, an even layer over a complex shape, or plain rust protection, and we will confirm the route before you commit.

Get a quote

Pick or avoid

Pick nickel plating for steel, brass and copper parts that need a bright, hard layer

Pick nickel plating when

The part needs a thin metal layer that raises mechanical strength, hardness, wear resistance, lubricity and ductility - the published benefit of the nickel layer.
The surface has to become brighter after finishing, and the published smooth texture is the look you want.
The base metal is one of the conductive ones the page names - steel, aluminium, copper or brass - and it can be racked or barrelled.
The part needs corrosion resistance and the published table lists the material as in scope.
A thin layer is acceptable and a small growth on a plated face can be allowed for.

Avoid nickel plating when

The base metal is plastic and no conductive pre-treatment is planned - the published table lists ABS, but that route is still To confirm.
The part is a complex shape or has inside faces that must be covered evenly; compare electroless nickel plating.
The only duty is rust prevention on steel at the lowest cost - see zinc plating.
A critical dimension sits on a plated face with no allowance for the added layer.
A tight tolerance or a thread runs to size after plating without being planned for.

Not sure whether the part needs nickel, electroless nickel or zinc? Send the drawing and say what the part has to survive and how it has to look.

Get a quote

Design constraints

What decides an even nickel layer: current, shape and racking

The bath chemistry is the job of the shop. What the designer controls is the base metal, the geometry the current sees, and the thickness the drawing allows.

Base metal and pre-treatment

Nickel bonds to the base metal, so how the surface is prepared helps decide whether the layer holds. Aluminium is reactive and needs its own pre-treatment; a plastic such as ABS needs the surface made conductive before any plating. The published table lists ABS while the process needs conductivity, so that route is confirmed case by case.

Current density and edges

Nickel builds fastest where the current is strongest - on edges, corners and the face nearest the anode. A sharp edge can take a thicker, rougher deposit while a shielded recess gets less. Deburring and, where needed, a shield on the rack even this out.

Throwing power and complex shapes

Electrolytic plating has limited throwing power: current does not reach deep inside a bore or a recess as strongly as it reaches an open face. If every inside face has to be covered to a set thickness, the electroless route is chosen instead.

Racking and contact marks

The part has to be held and connected so current flows. The contact point carries the current and stays unplated, so a small mark is normal. Bores, threads and sealing faces are often masked so plating does not land where a fit matters.

Thickness allowance

The published thickness comes as two bands, 3 um to 8 um and 8 um to 12 um. Whichever applies, the layer grows the part, so a dimension held after plating has to include the layer or be marked as a pre-plate dimension.

Batch consistency

Matching brightness and thickness across a batch is harder than plating one part, because current density depends on how the parts are racked together. Say if the batch has to match, so the rack and the bath time are set for consistency.

Drawing notes

What to write on the drawing: base metal, finish colour and thickness

Three lines carry the requirement: the base metal, the appearance, and the thickness to plate to. The thickness line is where most plated parts go wrong.

1.  BASE METAL:  ____________  (NICKEL REQUIRES A CONDUCTIVE SURFACE)2.  FINISH:  NICKEL PLATED  (ELECTROLYTIC)    APPEARANCE:  CLEAR / MATTE / BLACK  (DELETE PER AGREED COLOUR)3.  PLATING THICKNESS:  ______ um    (PUBLISHED AS 3-8 um OR 8-12 um - TO BE CONFIRMED PER JOB)4.  SURFACES TO BE PLATED:    ____________________________________________5.  SURFACES TO BE MASKED / LEFT BARE:    - ____________  (THREADS, BORES, SEALING FACES, CONTACT POINTS)6.  DIMENSIONS ON PLATED SURFACES ARE    BEFORE PLATING / AFTER PLATING  (DELETE ONE)7.  INSPECT:  EVEN BRIGHT NICKEL LAYER, NO BARE OR    DARK PATCHES, CONTACT MARKS ONLY WHERE ALLOWED.

Examples only - replace every blank with your own requirement. The thickness and the before-or-after dimension lines matter most: nickel plating adds a layer, so a face that is already to size has to allow for it or be masked.

Which metals

Materials we plate: 5 metals published, plus the ABS case

Our table for this process lists five materials and the published text names four. Where the two do not agree, the row shows both and flags the gap instead of hiding it.

Material	Nickel plating	Notes	Use instead
Steel	Yes	In our published table and named in the published text. A common base for a bright, hard nickel layer.	—
Aluminium	Yes	In our published table and named in the published text. Reactive and soft, so it needs its own pre-treatment before plating. See nickel plating on aluminium.	—
Brass	Yes	In our published table and named in the published text.	—
Stainless steel	Yes	In our published table. The published text does not list it by name, so the row is shown from the table.	—
Copper	Yes	Named in the published text but not in the published table - shown here as published and being confirmed.	—
ABS / plastics	To confirm	Listed in the published table, but nickel needs a conductive surface, so a plastic has to be made conductive first. See ABS.	—
Parts needing even coverage	Different process	Electrolytic nickel has limited throwing power into recesses and inside faces.	Electroless nickel
Parts needing only rust protection	Different process	Where the only duty is corrosion on steel, zinc costs less than nickel.	Zinc plating

Send the drawing with the base metal on it - if nickel is not the right layer for the material or the duty, we will say which one is.

Get a quote

Applications

Where nickel plating is used: automotive, hardware and consumer parts

Nickel plating shows up wherever a part needs a bright, hard, corrosion-resistant metal layer. These are the cases behind that.

Automotive wheels with a bright nickel-plated finish

Automotive and transport

Wheels, trims and visible hardware are nickel-plated because the part is judged on its bright, even surface as much as on the metal beneath it.

A bright nickel-plated bolt with a smooth, reflective finish

Fasteners and hardware

Bolts and fasteners are plated for corrosion resistance and wear, and the bright nickel surface also makes them read as a finished part.

An aluminium part with a nickel-plated surface after finishing

Aluminium parts

Aluminium is one of the published base metals. Its pre-treatment decides how well the nickel holds, so it is confirmed per part.

Electrical connectors with a shiny copper-nickel plating, plated for wear and corrosion resistance

Electrical and connectors

Connectors and contacts are plated for wear and corrosion at the contact surface, where a thin, hard metal layer is doing the work.

QA and documentation

What comes back with the plated parts: inspection and thickness

Purchasing usually needs paper as well as parts. Here is what we can state today and what is still being confirmed.

Available

Visual inspection

Plated faces are inspected for an even bright layer, bare or dark patches, and marks, which is how this finish is judged.

Available

Coverage check

Faces that should be plated are checked for coverage, and masked faces are checked for being left clean.

To confirm

Thickness record

The published thickness is written as two bands with no label; whether a measured thickness can be reported against an agreed figure is being confirmed.

To confirm

Adhesion and standard

The published page carries no standards line for this process. Whether an adhesion test and a stated standard can be supplied is being confirmed before it is quoted.

Nickel plating FAQ: the questions engineers ask us

What is nickel plating?

Nickel plating develops a thin layer of nickel on the metal part. The published description says the nickel layer enhances the mechanical strength, hardness, wear resistance, lubricity and ductility, and that the surface becomes brighter after finishing. It can be run two ways - with the help of electrolysis and without.

What is the difference between electrolytic and electroless nickel?

The published text names two methods that share one goal, making the parts highly resistant to corrosion. Electrolytic nickel is deposited by a current, part by part; electroless nickel is deposited chemically with no current. Electrolytic nickel gives the brighter, harder layer; electroless covers complex shapes and inside faces more evenly. See which route fits.

Which materials can be nickel plated?

The published table lists ABS, aluminium, brass, stainless steel and steel, and the published text names steel, aluminium, copper and brass. The two lists do not fully agree - copper is in the text but not the table, and ABS is in the table but not the text - so both are shown as published and are being confirmed. See the material table.

How thick is the nickel layer?

The published page writes thickness as two ranges, 3 um to 8 um and 8 um to 12 um, side by side with no label. Both are shown here and neither is assumed; which band applies to a given part is being confirmed.

Can you nickel plate plastic?

ABS is in the published table, but nickel needs a conductive surface, so a plastic has to be made conductive before it can be plated. The published page does not spell out that pre-treatment, so the plastics route is shown as To confirm rather than a plain yes. See ABS.

What colour and texture does nickel plating give?

The published colour is written as clear, matte or black, and the published texture as a smooth finish. Note that matte sits against a smooth texture in the same table, so the exact appearance is carried as published and flagged rather than smoothed over.

Does nickel plating change the dimensions?

Yes - it adds a layer, so the part grows by the plating thickness on every plated face. A dimension held after plating has to include the layer, and threads or bores that have to run to size are usually masked. See how the layer affects size.

Does nickel plating stop corrosion?

The published description states that both plating methods aim to make the parts highly resistant to corrosion. For a plain rust-prevention duty on steel at lower cost, zinc plating is the common alternative; nickel is chosen where the part also needs a bright, hard surface. See zinc plating.

When should I choose electroless nickel instead?

When the part is a complex shape, has deep recesses or inside faces that all have to be covered to an even thickness, or when the base metal is not conductive. Compare the two on our electroless nickel plating page.

How do I get a quote?

Send the drawing, name the base metal, and mark which surfaces are plated, which are masked, and which dimensions are before or after plating. Contact the team with the part details and we will come back with a quotation.

Get your nickel plating quote

Upload a STEP, IGES or PDF drawing. Tell us the base metal, the appearance you need, the plating thickness you are working to, and any dimension that must not move - we will come back with the finish and the sequence.

Get a quote Machine it first

What to send us

Drawing - 2D and 3D files (STEP, IGES or PDF).
Base metal - steel, aluminium, brass, copper, stainless steel, or ABS.
Surfaces - which faces are plated and which are masked or left bare.
Thickness - the nickel thickness you are working to, if you have one.
Critical dimensions - any face that must not move during plating.
What happens next - assembly or storage, so the finish and the masking fit.

All uploads are secure and confidential. Engineers review and reply with a quotation and lead time.

Nickel Plating

Nickel plating in 5 steps: from a machined part to a bright nickel surface

Can we plate it? The base metal, the shape and the electrical contact decide

Base metal

Shape and reach

Uniformity and thickness

Nickel plating: 5 materials, 3 colours and one bright finish

Nickel plating adds a layer: the thickness comes out of your tolerance

Which route: electrolytic nickel, electroless nickel, or zinc

Electrolytic nickel plating

Electroless nickel plating

Zinc plating

When nickel plating is the wrong route

Pick nickel plating for steel, brass and copper parts that need a bright, hard layer

Pick nickel plating when

Avoid nickel plating when

What decides an even nickel layer: current, shape and racking

Base metal and pre-treatment

Current density and edges

Throwing power and complex shapes

Racking and contact marks

Thickness allowance

Batch consistency

What to write on the drawing: base metal, finish colour and thickness

Materials we plate: 5 metals published, plus the ABS case

Where nickel plating is used: automotive, hardware and consumer parts

Automotive and transport

Fasteners and hardware

Aluminium parts

Electrical and connectors

What comes back with the plated parts: inspection and thickness

Visual inspection

Coverage check

Thickness record

Adhesion and standard

Further reading: nickel vs chrome, zinc and electroless nickel

Nickel plating FAQ: the questions engineers ask us

Get your nickel plating quote

What to send us