Properties of Steels as a Basis for Design for High-Temperature Service. Part I: Carbon Steels *

Abstract

The paper gives a brief account of the influence of stress, temperature, and time on the behaviour of carbon steels of about 0·15 to 0·50 per cent carbon content, and provides data as a basis for design purposes. The data given are derived from investigations carried out at the National Physical Laboratory, largely on behalf of the British Electrical and Allied Industries Research Association.

Although practice has established satisfactory working stresses for carbon steels at moderately elevated temperatures—possibly up to 425 deg. C. (800 deg. F.)—it may serve a useful purpose to include herein particulars of the strength of carbon steels up to 800 deg. F. The chief purpose of the paper, however, is to assist the reader in appreciating the factors involved in estimating the useful strength of steels at higher temperatures extending to about 1,000 deg. F.