This specification covers molybdenum rods, fabricated from pure molybdenum that was produced by powder metallurgical process.

The sintering molybdenum rods get their highest density and required dimensions by rolling, forging, swaging and/or drawing.

If not specially required, molybdenum rods are supplied stress-free-annealed. The stress-free-annealing diminishes the deformation stresses of the molybdenum rods, without breaking up the deformation texture and causing a striking decrease in hardness.

The oxide- and lubricating layers of the molybdenum rods were removed in a chemical or mechanical way. The surface of the molybdenum rod is rolled, swaged or drawn condition.

Molybdenum rod is either cut to the required length or supplied in random lengths.

All molybdenum rods are inspected on internal cracks and surface defects. According to the diameter and the surface condition of the molybdenum rod, a visual control, a color liquid penetrant test, ultrasonic test or an eddy current test are applied. A combination of the various testing methods is possible. Slight impressions-caused by the production method-can exist on the surface of forged or swaged molybdenum rods. So far as they are not deeper as the permissible minimum dimension of the molybdenum rods, the final inspection does not qualify these impressions as defects.

Zhengzhou Sanhui Co., Ltd offers a wide range of refractory metal products, like titanium, niobium and other metal products.