Bolts for Use in Power-Plant Construction

In this paper the author discusses the use of steel vs. wrought iron and screw stock for bolts and nuts used in power-plant construction. He concludes that the carbon content for bolting steel ranging from about 0.2 per cent up to 0.45 per cent will yield the best combination of tensile strength and ductility in either the heat-treated or non-heat-treated condition. A tentative specification for high-temperature alloy-steel bolting material is appended.