ISO 6929 pdf download Steel products — Vocabulary
This International Standard defines terms for steel products according to their
stage of manufacturea
b) shape and dimensions,and
NOTE 1Although the products are generally defined independently of their end uses or manufacturingprocesses, it has sometimes been necessary to make reference to these criteria.
NOTE 2All dimensions given in this International Standard are nominal
NOTE 3See the list of terms and relevant subclauses in Annexes A and B.
1 Terms and definitions
1.1 Liquid steel
steel in the liquid state ready for pouring and obtained from the melting of raw materials
1.2 Ingots and semi-finished products
product obtained by pouring liquid steelinto moulds ofa shape appropriate to the subsequent processinginto semi-finished products, or flat or long products, generally by hot rolling or forging
Note 1 to entry: The shape generally resembles a truncated pyramid or truncated cone, the side surfaces may becorrugated and the corners more or less rounded.Depending on subsequent conversion requirements ingots mabe dressed or hot scarfed or both, or cropped without altering their status as “ingots”.
Note 2 to entry: Accordingto the cross-sectional shape and dimensions,adistinction is made between the following
aingots, having a cross section that may be square, rectangular (of width up to twice the thickness), polygonalround, oval, or shaped according to the profile to be rolled;
b) slab ingots, of rectangular cross section of width twice the thickness or over.
product obtained by
acontinuous casting that may or may not be followed by rolling, forging, or cutting,
rolling, forging,or cutting ofingots orlarge sections ofcontinuous castproducts and generallyintendedfor conversion into flat or long products by hot rolling or forging, or for the manufacture of forgings
Note 1 to entry: The cross sections may be ofvarious shapes see 188.8.131.52 to 1.22.5); the cross-sectional dimensionsare constant along the length with wider tolerances than those of the corresponding flat or long products andside corners more or less rounded. The side surfaces are sometimes slightly convex or concave, retaining rollingorging, or continuous casting marks and may be partly or totally dressed to remove surface defects, e.g. bycutting,flame melting, or grinding
184.108.40.206semi-finished product of square cross sectionsemi-finished product with sides of 50 mm or over, generally described as blooms ifthe sides are greaterthan 200 mm or as billets if smaller
Note 1 to entry: These dimensions may be less for certain types of steel, e.g. high-speed steels.
semi-finished product ofrectangular cross sectionsemi-finished product of cross-sectional area of 2 500 mm2 or over of width up to twice the thicknessgenerally described as blooms ifthe cross-sectional area is greater than 40 000 m2 or as billets ifsmaller
flat semi-finished product
product with a thickness ofat least 50 mm and a width ofat least twice the thickness, described as a slab
round semi-finished product
continuously cast or forged semi-finished product of circular cross section
blank for sections
semi-finished productintended for the manufacture ofsections thathave been preformed for that purpose
Note 1 to entry: The cross-sectional area is generally over 2 500 mm2.
Note 2 to entry: ln many countries, long products are obtained by rolling semi-finished products of square orrectangular cross sections.