Formation of a portfolio of orders for iron and steel enterprises using a marginal analysis
Importance The article discusses the issues of order portfolio formation at industrial enterprises.  Objectives The article aims to formalize the procedure of order book formation and build an appropriate algorithm at steel plants.  Methods For the study, we used a method of analyzing the possibility of using break-even.  Results In this article, we introduce an analysis of the problem of order book formation at steel enterprises. We also introduce a concept of break-even point of order and propose a required algorithm inclusive of different variants of order intake. Particular attention is paid to the order book formation with contracts which do not have a fixed structure of supplied products.  Conclusions and Relevance Using the break-even point of order index is most preferred comparing the other characteristics (marginal income, rentability, etc.). The main advantage of the offered index is a possibility to take into account that orders are received not simultaneously, so each particular one is be considered. The proposed methods can improve the efficiency of order book formation at modern enterprises making it economically reasonable and regulated. This will help avoid possible losses.