Rafael A. Mesquita, Yan Wang
Microalloying with Niobium or Vanadium is commonly used in long high strength (> 50 ksi) steels, usually in compositions with carbon around 0.10% and about 1% manganese. This paper analyzes the possibility of Nb substituting V in standard long structural products, with examples in beams, sections, and flats, focused on 50 ksi with base chemical composition of carbon between 0.07% and 0.17% and manganese between 0.8% and 1.5%. Several trial heats with Nb replacing V were produced, followed by large-scale production heats, using a ratio of 1 part of Nb for 2 parts of V. The final Niobium content in those products varies from 0.005% to 0.030% Nb. Results showed that Nb was fully soluble after reheating, allowing for direct rolling without specific thermomechanical practices. The study demonstrated substantial cost advantages in terms of alloy costs, with the use of Niobium improving the Yield to Tensile strength ratio. No issues were found in casting or rolling, and appropriate reheating temperatures were maintained to ensure Nb solubility. The study supports the feasibility of replacing Vanadium with Niobium in long products, presenting encouraging mechanical property enhancements.
@article{655043e4-8bee-4064-8f91-eeeb3539737c,
title={A CASE STUDY ON NIOBIUM SUBSTITUTING VANADIUM IN LONG PRODUCTS},
author={Rafael A. Mesquita and Yan Wang},
year={2026},
language={en}
}TY - JOUR TI - A CASE STUDY ON NIOBIUM SUBSTITUTING VANADIUM IN LONG PRODUCTS AU - Rafael A. Mesquita AU - Yan Wang PY - 2026 LA - en ER -
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