Evaluation of 4330M Steel for Fasteners Applications

Abstract:

The objective of the study was to optimize the strength and ductility values of the 4330M steel. Optimization was conducted through different types of heat treatments. Tensile testing, hardness testing, optical microscopy, and Scanning Electron Microscopy (SEM) were used to evaluate the mechanical properties and microstructure of the as-received and the heat treated samples. The alloy was provided from two vendors; vendor H and vendor S. Results showed that by increasing the tempering temperatures, strength values decreases, while ductility values remain unchanged. Vendor H samples had higher strength values and much finer grain structure which was revealed only at 5000x magnification.

• Periodical: Defect and Diffusion Forum (Volume 380)
• Pages: 198-211
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.380.198
• Online since: November 2017
• Authors: A. Al Sumait*, C. Delgado, F. Aldhabib, X. Sun, F. Alzubi, K. Tovalin, A. Cheng, R.M. Campo, Y.J. Li, B. Ramsey, L. Zeng, O.S. Es-Said
• Keywords: 4330M Steel, Fasteners, Heat Treatments, Mechanical Properties, Microstructure

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