This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
GM 980X-A Unique High Strength Sheet Steel with Superior Formability
Annotation ability available
Sector:
Language:
English
Abstract
Substituting high strength low alloy (HSLA) steels for plain carbon steel in strength limited automotive components could reduce weight and conserve steel. However, the poor formability of these steels has, in part, restricted their use in automotive applications. This paper discusses a simple treatment which transforms some commercially available 980X steels into a product with the following desirable mechanical properties: (a) Yield strength of 950X steels in the as-treated condition but equal to that of 980X steels after 2-3% deformation, (b) Tensile strength of 980X steels, (c) Superior formability, equal to or better than that of 950X steel in hot rolled gages, i.e., thicker than ∼2 mm (0.075″), and approaching that of plain carbon steel in cold rolled gages. This material, named GM 980X, could significantly increase the use of 980X steels in automotive applications.
Two commercially available 980X steels were evaluated in this study; one was vanadium strengthened and the other titanium strengthened. The vanadium steel appears to be better suited for this process than the titanium steel. Probable mechanisms for the observed changes in properties and the reasons for the different response of the two steels are suggested.
Recommended Content
Aerospace Material Specification | Steel, Bars, Forgings, and Tubing 1.45Cr (0.93 - 1.05C) (SAE 52100) Premium Aircraft-Quality, Consumable Electrode Vacuum Remelted |
Aerospace Material Specification | Steel Bars, Forgings, and Tubing 1.7Cr - 3.8Ni - 0.3Mo (0.32 - 0.38C) Aircraft-Quality |
Technical Paper | Grain Size and Forgeability of a Titanium Microalloyed Forging Steel |
Authors
Topic
Citation
Rashid, M., "GM 980X-A Unique High Strength Sheet Steel with Superior Formability," SAE Technical Paper 760206, 1976, https://doi.org/10.4271/760206.Also In
References
- Morgan E. R. Dancy T. E. Korchynsky M. J. Metals 1965 17 829 31
- Hecker S. S. Met. Eng. Quart. 1973 13 42 48
- Keeler S. S. “Understanding Sheet Metal Formability,” Machinery 1968
- Rashid M. S. Met. Trans. 1975 6A 1265 68
- Keeler S. P. Brazier W. G. “Relationship Between Laboratory Material Characterization and Press Shop Formability,” Proceedings of the Conference, Microalloying '75 Washington, D.C. Oct. 1-3 1975
- Keeler S. P. “Forming Limit Criteria-Sheets,” Proceedings of 21st Annual Sagamore Conference Racquette Lake, New York August 13-16 1974
- Herrnstein W. H. Straatmann J. A. Bosh R. A. First Annual AIME-TMS Spring Meeting Pittsburgh, Pa. May 14 1969
- Pope L. S. Grozier J. D. Met. Prog. 1971 100 75
- Frame J. W. Schunk F. B. AIME-IMD Special Report Series No. 6 “Deep Drawing Steels,” 1958 57 61
- Richardson F. D. JISI 1953 175 33 51
- Pearson J. Ende U. J. C. JISI 1953 175 52 58
- Baird J. D. Met. Rev. 1971 5 1 18
- Rashid M. S. Met. Trans.