Details
- When referenced with a ‘T’, such as 350WT, this indicates weldable notch-tough steel. When Charpy tests are required, the category will be indicated as Longitudinal Charpy V Notch (LCVN) with test temperateures as listed below;
- CAT 1 20 joules @ (0 C)
- CAT 2 20 joules @ (-20 C)
- CAT 3 20 joules @ (-30 C)
- CAT 4 20 joules @ (-40 C)
- CAT 5 To be specified by the purchaser
- 27 joules is equal to 20ft/lbs
- Thickness range: 5/16” – 4”