Tension Tests. Except as specified in the following paragraphs the material as represented by the test specimens shall conform to the prescribed tensile requirements.
Unless a specific orientation is called for on the purchase order, tension test specimens may be taken parallel or transverse to the final direction of rolling at the option of the steel manufacturer.
Shapes less than 645 mm2 in cross section, and bars, other than flats, less than 12.5mm in thickness or diameter need not be subjected to tension tests by the manufacturer. For material under 8 mm in thickness or diameter, a deduction from the percentage of elongation in 200 mm of 1.25 percentage points shall be made for each decrease of 0.8 mm of the specified thickness or diameter below 8 mm.
Toughness Tests (material 50 mm and less in thickness). Except as permitted bellow, Charpy V-notch tests shall be made on Grade B material over 25 mm in thickness and on material of Grades D, E, AH32, AH36, DH32, DH36, EH32, and EH36.
Toughness tests are not required: (a) on Grade D normalized material made fully killed and having a fine austenitic grain size, (b) on Grades AH32 and AH36 when normalized, or when 12.5 mm or less in thickness when treated with vanadium or columbium (niobium) or 35 mm or less in thickness when treated with aluminum, and (c) on Grades DH32 and DH36 material when normalized or when 12.5 mm or less in thickness when treated with vanadium or columbium (niobium) or less in thickness when treated with aluminum, and on Grades DH32 and DH36 material when normalized.
For plate material, when required, one set of three impact specimens shall be made from the thickest material in each 50 tons [45 Mg] of each heat of Grades B, D, AH32, AH36, DH32, and DH36 steels and from each rolled product of normalized Grades E, EH32, and EH36 steels. When heat testing is called for, a set of three specimens shall be tested for each 50 tons [45 Mg] of the same type of product produced on the same mill from each heat of steel. The set of impact specimens shall be taken from different as-rolled or heat-treated pieces of the heaviest gage produced. An as-rolled piece refers to the product rolled from a slab, billet, bloom, or directly from an ingot.
For flats, rounds, and shapes, one set of three impact tests shall be taken from each 25 tons [25 Mg] of each heat for Grade E, EH32, or EH36 and, when required, from each 50 tons [45 Mg] of each heat of Grades D, E, AH32, AH36, DH32, DH36, EH32, and EH36. material. Where the maximum thickness or diameter of various sections differs by 10 mm or more, one set of impacts shall be made from both the thickest and the thinnest material rolled regardless of the weight represented.
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