AS 3679.1:2016 pdf free
AS 3679.1:2016 pdf free.Structural steel Part 1: Hot-rolled bars and sections
Surface defects shall be removed by machining, grinding, chipping, scarfing or other similar processes. The dimensions remaining after removal of the surface defects shall be in accordance with Clause 7.1.
The removal of surface defects from a section by grinding, or by chipping followed by grinding and then weld repair, shall comply with the following:
(a) The area ground shall be well flared without abrupt changes in contour.
(b) Weld repair surface defect in accordance with Clause 8.4.
Weld repair of surface defects from a section, shall comply with the following:
(a) The total area of the chipped or ground surface of any piece of the section prior to welding shall not exceed 2% of the total surface area of that piece.
(b) The reduction in thickness of the material resulting from removal of defects at any location shall not exceed the lesser of–
(i) 30% of the nominal thickness of the material at the defect; or
(i) 25 mm.
(c) For the toe of an angle, a beam or a channel, the depth of the chipped or ground depression, measured from the toe inward, shall not exceed the remaining material thickness at the base of the depression.
Welding used in the repair of surface defects shall utilize a low-hydrogen process in accordance with AS/NZS 1554.1, Category SP.
Welds shall be sound, the weld metal being thoroughly fused without undercutting or overlap. The weld metal shall project at least 1.5 mm above the rolled surface, and the projecting metal shall be removed by grinding, or by chipping followed by grinding, to make it flush with the rolled surface.
Test samples for the preparation of test pieces for tensile and impact tests shall be taken in accordance with Clause 9.2. Test pieces shall be in the same condition as the finished product. Test samples shall be representative of the body of the product.
NOTE: Where the product is to be further heat-treated and separate heat treatment of test samples is appropriate, this should be specified at the time of enquiry and order (see Appendix A).AS 3679.1 pdf free download.
