Common Steel Sheet Metal Grades

Steel grades standards by country.

Common steel sheet metal grades.

To help this blog will explain the gauge system and features a sheet metal gauge chart. Japanese steel grades. European standards en 10027. Around the world a variety of organizations have developed standards for steel grading including british standards japanese industrial standards and germany s gb standard.

Astm a516 steel grade 70 is similar to a515 but is intended for lower temperature applications. For alloys in general including steel unified numbering system uns of astm international and the society of automotive engineers sae. International organization for standardization iso ts 4949 2003. The four most common aluminium grades available as sheet metal are 1100 h14 3003 h14.

However sae international s steel grading system is the most common. It is a silicon killed coarse grained steel that requires careful welding techniques. Astm a515 steel grade 70 has greater strength than a285 and intended for intermediate and high temperature boilers and pressure vessels. On the other hand in the case of sae j403 grade 1008 the spec allows for up to 0 10 percent carbon with no minimum.

When working with sheet metal it is common for the term gauge to be used someone unfamiliar with the gauge system may not understand what is meant by 18 gauge steel for example. For example 1010 steel is a carbon steel with a nominal 0 10 percent carbon level. Astm a285 steel grade c in fire box and flange quality designed for fusion welded boilers and pressure vessels where moderate strength and good forming is required.