Creep Strength and Fatigue Strength

Creep Strength

Creep is used as a measure of strength at elevated temperature. It may be defined as the tensile stress necessary to produce a certain total extension in a given time under load at elevated temperatures. The creep strength of Mg-RE-Zr and Mg-Sr alloys (AJ series) are the property of greatest interest in this alloy systems. The table shows the superiority of the RE containing alloys over AZ system with respect to creep.

Fatigue Strength

 During cyclic loading, materials could fail at stresses much lower than their yield point. The number of load cycles in automotive applications may be relatively high, e.g. several 108 cycles in wheels. Magnesium shows its best fatigue resistance at high cycles and low stresses. Although alloying elements may cause significant improvement in fatigue life, Inherent flaws in die cast materials, significantly reduce the fatigue strength. S-N curves (stress plotted against number of cycles of reserved stress) for Magnesium alloys exhibit a relatively low slope throughout the lifetime range, the slope tending to flatten with increasing life.

SHF-Royal is the first and only Magnesium producer in Iran and the first and only facility which employs the Pidgeon process for producing Magnesium in the Middle East. The Headquarters and the production Facility are located in Ferdows, Southern Khorasan Province,Iran.

The company employs more than 220 people. Today’s product portfolio corresponds to a large variety of alloys in different shapes, prepared for metallurgical and structural applications of Magnesium.

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