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ASTM A913/A913M-03
Standard Specification for High-Strength Low-Alloy Steel Shapes of Structural Quality, Produced by Quenching and Self-Tempering Process (QST)
4 стр.
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Разработчик:
Зарубежные/ASTM
ICS:
77.140.70 Steel. Including sections / Стальные профили. Включая секции
Сборник (ASTM):
01.04 Steel--Structural, Reinforcing, Pressure Vessel, Railway / Сталь - Конструкционная, арматурная, для сосудов под давлением, рельсовая
Тематика:
Steel--Structural, Tubes, Plate, Coated
Описание
Область применения

1.1 This specification covers high-strength low-alloy structural steel shapes in Grades 50 [345], 60 [415], 65 [450] and 70 [485], produced by the quenching and self-tempering process (QST). The shapes are intended for riveted, bolted or welded construction of bridges, buildings and other structures.

1.2 The QST process consists of in line heat treatment and cooling rate controls which result in mechanical properties in the finished condition that are equivalent to those attained using heat treating processes which entail reheating after rolling. A description of the QST process is given in Appendix X1.

1.3 Due to the inherent characteristics of the QST process, the shapes shall not be formed and post weld heat treated at temperatures exceeding 1100°F [600°C].

1.4 When the steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized. See Appendix X3 of Specification A 6/A 6M for information on weldability.

1.5 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with this specification.

Ключевые слова:
high-strength low-alloy steel; QST; quenching and self-tempering process; steel shapes; structural shapes; structural steel