Historically, silverware referred only to those household items that were manufactured from silver. This could include anything from candlesticks, tea services, flatware, and cutlery. Today, silverware is a generic term that is used to describe all types of flatware and cutlery, regardless of its composition.
Silverware, as the name implies, was historically made from (obviously) silver. However, being a very soft and malleable metal, it was necessary to blend the silver with another metal to enhance its strength. This cave rise to the alloy called Sterling Silver, which has long been recognized as the 'silver' standard. Sterling Silver contains (by law) 92.5% pure silver and 7.5% of other metals – typically copper. More recently, other metals (such as zinc and platinum) have been used to enhance specific properties, such as resistance to tarnish, but none have been able to replace copper as the standard. So, if you're fortunately enough to have inherited, purchased (or possibly even collect) sterling silver, it contains at least 92.5% pure silver (and as the price of silver goes up, so does the value of your flatware).
Silverplate cutlery is made from a base metal (usually copper, nickel, or zinc) which is covered with a layer of silver. Originally, silver and copper were melted and fused together into a composite, the two layers behaving as one. Around 1770 the 'double sandwich' or Sheffield process was developed, where a copper core is 'sandwiched' between two layers of silver, then heated and formed. This continued until about 1840 when it was replaced by the highly efficient electroplating process. Electroplating deposits a very thin layer (typically 35 microns) of silver onto another conductive metal, as an electrical current passes through them. One benefit of electroplating is that the surface is made of pure silver, not sterling silver. Unfortunately, the silver layer itself is quite thin, so the majority of the part consist of the cheaper core metal.
All other types of flatware and cutlery, typically referred to as 'silverware' contain no silver at all. Today's most common varieties are made of stainless steel, typically the 18/8 or 18/10 alloys. The numbers refer to the composition of the steel alloy. The base metal is iron, and it is blended with 18% chromium and 8% (or 10%) nickel. Higher quality stainless steel flatware will be heavier than 'cheaper' versions.
Other materials from which cutlery has been made include gold (solid and plated), brass, and pewter, all of which obviously contain no silver.
As you can see, just because the flatware or cutlery you purchased is called silverware, that does not guarantee it will be made of silver. Depending on the type of silverware you purchase, it may contain sterling silver, silver and copper, or possibly no silver at all.
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Source by Mark Rocco