Destructive Testing of Welder’s Qualification Coupons

There are three items that must be addressed when performing destructive testing of a welder’s test coupon.

1. The type of the specimens required.

2. Where in the test coupon specimens shall be taken from.

3. How many specimens are required.

These values are listed in Article IV Welding Data of Section IX in a tabular form, 452.1(a) and are accompanied by notes referencing paragraphs found in Article III, of Section IX .The type and number a listed in that paragraph.

Turn now to Page 141 of Section IX.

We will now examine the figures referenced in QW-452.1(a) for removal of Welder’s Performance Coupons.

Turn to Page 173

Example - Billy Bob Welder’s performance test was made under the following conditions using Big Welding Company’s WPS CW-1010 :

1. P-Number 1 pipe coupon2. Pipe diameter NPS 8” (8.625”)3.Thickness 0.500” 4. 6G test position5. Uphill progression6. F-No.4 (SFA 5.1) 7. 3 layers/passes of weld metal8. Process SMAW only

Next we fill out the of Welder’s Performance Qualification (WPQ) Form QW-484 for Billy Bob Welder.

Finally an example of the coupons required for a 2G and 5G test in a single coupon which will qualify a welder for all four of the positions, Flat, Horizontal, Vertical and ,Overhead just the same as the single 6G test.

This coupon requires 6 bend specimens instead of the usual 4, taken from the locations indicated in the graphic.