Silver plate
A microns-thin layer of silver over a base metal. Everything that cleans sterling also thins the plating, and once it is through there is nothing underneath to polish.
What not to do
Mild abrasion is unsafe on Silver plate
Unsafe
Do not do this. The risk is established, and it is described below.
The same technique, and on plate it has an end point. Once the plating is through, the dull patch that appears looks like tarnish and invites more of what caused it.
Why we say this
Supported
Stronger than the sterling edge deliberately. On solid silver an abrasive polish is a recurring cost; on plate it destroys the surface, and nothing domestic restores it.
Sources
Conservation Information Sheet: Looking after silver
Museum of Applied Arts & Sciences (MAAS), via Museums & Galleries of NSW · Trade or professional body
Relied on for: That over-polishing plated silver will actually remove the silver-plating and expose dull areas of base metal that can be mistaken for tarnish. (states this directly)
Verification: a person has read the passage relied on.
Read on — Silver components; Silver damage and how to reduce it, items 1-7; Recommended storage and display materials; How to clean silver. Supports the claim as stated.
Last reviewed by a person on .
Mild cream cleanser is unsafe on Silver plate
Unsafe
Do not do this. The risk is established, and it is described below.
A polishing cream is the abrasive class the museum guidance names, and on a microns-thick plating it is the treatment with an end point.
Why we say this
Supported
Written so the treatment-conflict record and the graph agree: the conflict names a cream cleanser as contraindicated, and CHQ-V021 is right to insist a safety edge say so too.
Sources
Conservation Information Sheet: Looking after silver
Museum of Applied Arts & Sciences (MAAS), via Museums & Galleries of NSW · Trade or professional body
Relied on for: That polishing creams, wadding and rouge sticks contain abrasive compounds and corrosive acids, remove much more of the silver surface than a cloth or dip, and that over-polishing plated silver removes the plating and exposes base metal. (states this directly)
Verification: a person has read the passage relied on.
Read on — Silver components; Silver damage and how to reduce it, items 1-7; Recommended storage and display materials; How to clean silver. Supports the claim as stated.
Last reviewed by a person on .
In detail
Silver plate is a thin layer of silver deposited over another metal — Sheffield plate historically, electroplated nickel silver since the mid-nineteenth century. It looks like sterling, tarnishes like sterling, and fails in a way sterling cannot. The distinction is the whole record. On sterling, polishing removes a little of an object that is silver all the way through. On plate, polishing removes a little of a coating, and the museum guidance is explicit about where that ends: over-polishing plated silver will actually remove the silver plating, exposing dull areas of base metal that can then be MISTAKEN FOR TARNISH — which invites more polishing, on the exact spot that has none left. That makes the ordinary escalation the wrong instinct here. A dull patch that will not come up is the signal to stop, not to work harder. Nothing in the domestic repertoire puts plating back, and re-plating is a specialist job rather than a cleaning one. Hallmarks are how a reader tells which they have, and it is worth checking before the first clean rather than after.
Properties
Sensitivity
- Acids
- Recorded
- Abrasion
- Recorded
- Porous
- Not applicable
“Not known” means CleaningHQ has not established this, not that the material is unaffected.
Why
- Silver plate is explained by Polishing removes metal
Related
- Silver plate is commonly affected by Tarnish
Hacks and claims involving this
When the obvious answer is wrong
How do I get tarnish off silver-plated cutlery without wearing the plating through?
That sentence is also the problem. Tarnish CONTAINS silver, so removing it always removes a little metal, and abrasive polishes carry corrosive acids as well as abrasive compounds. On solid silver that is a slow recurring cost. On plate the silver is only microns thick, so the same treatment is a countdown - and the museum sheet records how it ends: over-polishing plated silver removes the plating and exposes dull base metal that CAN BE MISTAKEN FOR TARNISH. The reader then polishes harder, on the one area with nothing left.
A different kind of treatment works: Work out which you have first, because the answer diverges and hallmarks are how you tell. On plate, drop down the escalation rather than up it. Both conservation bodies read here direct a silver cleaning CLOTH as the routine treatment for light tarnish on plain undecorated pieces, and the museum sheet states that a cloth or a dip removes far less surface than a polishing cream does. For heavier tarnish the UK professional body permits a silver DIP, with conditions that are not optional: follow the container instructions, wear gloves, use fresh solution, and rinse thoroughly - dip left in crevices keeps corroding and produces a green crust. Electrochemical cleaners, including the aluminium-foil-and-bicarbonate method, are ruled out by both bodies as a class. The larger answer is to clean less.
Sources for this page
Sources
Conservation Information Sheet: Looking after silver
Museum of Applied Arts & Sciences (MAAS), via Museums & Galleries of NSW · Trade or professional body
Relied on for: That silver is often plated onto other metals, that hallmarks distinguish sterling from silver-plated, and that over-polishing plated silver will remove the plating and expose dull base metal that can be mistaken for tarnish. (states this directly)
Verification: a person has read the passage relied on.
Read on — Silver components; Silver damage and how to reduce it, items 1-7; Recommended storage and display materials; How to clean silver. Supports the claim as stated.
Caring for your collections: Silver and plate
The Institute of Conservation (Icon) · Trade or professional body
Relied on for: That abrasive wadding, creams and rouge sticks remove silver surface, and that specialist advice should be sought where composition is uncertain. (states this directly)
Verification: a person has read the passage relied on.
Read on — The tarnish, cleaning, and methods-to-avoid sections. Supports the claim as stated.
Last reviewed by a person on .