What’s The Difference Between Steel Sheet And Plate?

What’s the difference between steel sheet and plate?

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Plate and sheet are words used to describe the classification of metal depending upon its thickness.Plate is typically thicker than sheet, but the boundaries vary depending on the material you are talking about.

Steel is usually measured in fractions of an inch or SAE Gage [numbers = fractions] like 20 ga. (1/20″).A number of different gauge standards have been used for different applications. For example, gauges for ferrous steels are not used for non-ferrous steels such as aluminium and copper alloys, and there are also regional preferences for alternative gauges.Sometimes the same gauge number refers to a different thickness in different gauge standards. Due to this potential for confusion, the use of gauge number is discouraged by current standards organisations such as ASTM, “as being an archaic term of limited usefulness not having general agreement on meaning”,according to ASTM A480/A480M.

For a definitive answer, it is necessary to refer to a standard or specification recognised by the manufacturer of the metal product in question . For example, stainless steel can be purchased in compliance with the specifications of ASTM A480/A480M - Standard Specification for General Requirements for Flat-Rolled Stainless Heat-Resisting Steel Plate, Sheet, and Strip. This includes the following definitions for material complying with this standard:

Plate: material 3/16″ [5.00 mm] and over in thickness and over 10″ [250 mm] in width;

Sheet: material under 3/16″ [5.00 mm] in thickness and 24″ [600 mm] and over in width

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