Structural Shapes - Nucor-Yamato Steel

General Data contained within this catalog is current as of January 2011, however,
revisions of this catalog, in whole or in part, may be issued in the future.
This catalog or any part thereof may be reproduced without permission provided that the
reproduced pages, or portions of pages, are clearly marked and identified with the latest revision
date and with Nucor-Yamato Steel Company as the source.
The information contained within this catalog has been prepared in accordance with recognized
engineering principles and is for general information only. While it is believed to be accurate,
this information should be used only when supplemented by competent and qualified
professional judgment. Anyone making use of this information assumes all liability arising from
such use.
The wide flange (W) beams and H-piles (HP) listed in this catalog are rolled at specific intervals
determined by Nucor-Yamato Steel. Some shapes are rolled less frequently than others. Contact
Nucor-Yamato Steel or refer to the regularly published Proposed Rolling Schedule to determine
the current rolling frequency. Information is available on the Nucor-Yamato Steel website,
www.nucoryamato.com.
Our structural shapes conform to ASTM (American Society for Testing and Materials) A6/A6M
structural steel specifications, latest edition. However, we may furnish steel conforming to other
specifications by special request. Contact us for product availability, rolling frequency and other
pertinent information.
In regards to rolling and cutting tolerances, they are in accordance with accepted standards.
Concerning W and HP shapes, the inside and outside surfaces of the flanges are parallel to each
other. The inside flange surfaces of S and C shapes have approximately a 16-2/3 % slope. The
slope of the inside flange surfaces of MC shapes varies.
Nomenclature We use the standard AISI (American Iron and Steel Institute)
nomenclature throughout the catalog. For example, W24x55, C15x40, MC12x45, and HP12x53.
Please use this type of notation when placing your order.
Weights, Dimensions And Properties We compute the weights of rolled
steel shapes on the basis that a cubic foot of steel weighs 490 pounds and a cubic meter of steel
has a mass of 7850 kilograms. The weights of the shapes have been calculated from their
theoretical dimensions as published in ASTM A6/A6M, and are rounded off to the nearest
pound, except where we have otherwise indicated. In accordance with standard industry
practices, the fillets and/or the rounded edges have been included in our computation of the
weights and properties. In accordance with ASTM A6/A6M, the cross-sectional area or weight
(mass) of each shape shall not vary more than 2.5% from theoretical or specified amounts,
except for shapes with a nominal weight of less than 100 lb/ft, in which variation shall range
from -2.5% to 3.0% from the theoretical cross section area or specified nominal weight. The
cross-sectional area values listed are as published, except where no publication of such values
could be found. These values are calculated based upon nominal dimensions and are indicated
with an asterisk. This catalog contains both inch-pound and SI metric units for dimensions and
properties of shapes produced by Nucor-Yamato Steel Company.
May 2013 General Notes - 3 Nucor-Yamato Steel