Steel casting is a specialized form of casting involving various types of steel. Steel castings are used when cast irons cannot deliver enough strength or shock resistance
These are
- Specifications
- Standards
- Codes.
Specifications
Standard
A standard can be defined as a specification, test method, definition, or recommended practice that has been approved by a nationally recognized specification-writing body such as ASTM (American Society for Testing and Materials), ISO (international Organization of Standards), or SAE (Society of Automotive Engineers). A standard can be further be defined as a document which details properties, processes, dimensions, materials composition, relationships, or concepts. This connotation follows Webster's definition of "something set up and established by authority as a rule for the measure of quantity, weight, extent, value, or quality." It can be seen then that there is some overlapping between specifications and standards, and for that reason the two terms are often used interchangeably where steel castings are concerned.
A standard can be defined as a specification, test method, definition, or recommended practice that has been approved by a nationally recognized specification-writing body such as ASTM (American Society for Testing and Materials), ISO (international Organization of Standards), or SAE (Society of Automotive Engineers). A standard can be further be defined as a document which details properties, processes, dimensions, materials composition, relationships, or concepts. This connotation follows Webster's definition of "something set up and established by authority as a rule for the measure of quantity, weight, extent, value, or quality." It can be seen then that there is some overlapping between specifications and standards, and for that reason the two terms are often used interchangeably where steel castings are concerned.
Code
The word " code " is a term of much broader meaning than either specification or standard and can best be described as a set of rules established by a recognized authority such as the American Society of Mechanical Engineers' (ASME), Boiler and Pressure Vessel Code or the United States of America Standards Institute's (USASI) code for pressure Piping. In adopting the rules that make up the various codes, consideration is generally based on health, safety, and environmental protection. The code-formulating bodies .
