Structural, Carbon & HSLA Steel Plate

CSA G40.21 50A / 350A

An atmospheric corrosion-resistant weldable notch-tough steel plate grade specified within G40.21 of the Canadian Standards Association (CSA). This plate is utilized primarily in structural applications such as bridges and buildings. When properly exposed to the atmosphere, this steel plate can be utilized in its bare condition (unpainted). It is also referred to as 350A, which is its metric designation. This material is also available as Charpy tested when referenced with a “T”, such as 50AT / 350AT. When Charpy tests are required, the category will be indicated. The values of these categories are outlined below in mechanical properties.

Mechanical Properties 50A / 350A:

• 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 50A
Grade Thickness (Inches) Width (Inches) Length (Inches)
50A
0.1875
96
240/480
50A
0.2500
60/96/120
240/480
50A
0.3125
60/96/120
240/480
50A
0.3750
60/96/120
240/480
50A
0.5000
60/96/120
240/480
50A
0.6250
60/96/120
240/480
50A
0.7500
60/96/120
240/480
50A
0.8750
60/96/120
240/480
50A
1.0000
60/96/120
240/480
50A
1.1250
60/96/120
240/480
50A
1.2500
60/96/120
240/480
50A
1.5000
60/96/120
240/480
50A
1.7500
60/96/120
240/480
50A
2.0000
60/96/120
240/480
50A
2.2500
96
240/480
50A
2.5000
96
240/480
50A
2.7500
96
240/480
50A
3.0000
96
240/480
50A
3.2500
96
240
50A
3.5000
96
240
50A
3.7500
96
240
50A
4.0000
96
240
50A
5.0000
96
240
50A
6.0000
96
240
Stock Sizes 350A
Grade Thickness (Inches) Width (Inches) Length (Inches)
350A
0.1875
96
240/480
350A
0.2500
96
240/480
350A
0.3125
96
240/480
350A
0.3750
96
240/480
350A
0.5000
96
240/480
350A
0.6250
96
240/480
350A
0.7500
96
240/480
350A
0.8750
96
240/480
350A
1.0000
96
240/480
350A
1.1250
96
240/480
350A
1.2500
96
240/480
350A
1.5000
96
240/480
350A
1.7500
96
240/480
350A
2.0000
96
240/480
350A
2.2500
96
240/480
350A
2.5000
96
240/480
350A
2.7500
96
240/480
350A
3.0000
96
240/480
350A
3.2500
96
240
350A
3.5000
96
240
350A
3.7500
96
240
350A
4.0000
96
240
350A
5.0000
96
240
350A
6.0000
96
240

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