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Round

Product advice on steels to be used for:
Important specification
  • Formability (rivet)
  • Tear Force at the openning
  • Seaming ability
  • Corrosion resistance.
Recommendation

The manufacturing process for easy-open ends (EOEs) is very demanding process. It requires packaging steel grades which can withstand complex rivet-forming operations resulting in a high production rate and a very low level of spoilage.

For a reliable rivet-forming process, packaging steels for EOEs must have excellent cleanliness and high ductility in all directions. High-temper steel grades are very suitable as they offer thickness reduction, minimum elongation, and tight tolerances on mechanical properties.

The high level of pressure resistance required for the retorting process comes from a combination of the packaging steel’s thickness and hardness.

ArcelorMittal’s range is suitable for EOE manufacturing processes including: three- or four-step rivet forming); end round shape; and can retorting (with or without counter-pressure). Recommended grades include:

Where lightweighting is an issue, Maleis® (MLxxx) and Maleis®+ (MPxxx) are high strength grades with tight tolerances (yield strength ±30 MPa) and improved ductility.

For round EOE which have been retorted without counter-pressure ML550, ML600, ML650, and MP700 are recommended.

For round EOE which have been retorted with counter-pressure, lower strength grades such as TH330 can be utilised.

For smaller diameter cans and demanding processes the standard grades TH435 and TH460 are available.

Metallic coating: Tin coating or ECCS. ECCS can be used when the can’s contents are not aggressive. 

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