CSA G40.21 STRUCTURAL STEEL is 

A high-strength, low-alloy steel plate grade specified within G40.21 of the Canadian Standards Association (CSA). This grade is utilized in a variety of structural applications. It is also referred to as 350W, which is its metric designation. This material is also available as Charpy tested when referenced with a "T", such as 50WT / 350WT. When Charpy tests are required, the category will be indicated. The values of these categories are outlined below in mechanical properties.

Mechanical Properties 50W/350W:

Tensile:

65 to 95 ksi

Yield:

50 ksi min

Elongation:

19% min in 8" 22% min in 2"

CAT 1 (32°F):20 ft/lbs

CAT 2 (0°F):20 ft/lbs

CAT 3 (-20°F):20 ft/lbs

CAT 4 (-50°F):20 ft/lbs

CAT 5:(Specified by Purchaser)

STOCK SIZES 50W

CSA G40.21 Steel Plate Overview:

• Popular structural steel that meets specifications outlined by the Canadian Standards Association.

• Available in three grades: 44W (most popular), 50W and 50A.

MATERIAL PROPERTIES

The following material properties are will be confirmed on the Mill Test Report.

CHEMICAL COMPOSITION

The following composition properties are for the CSA G40.21 grades.