This is a subprime grade of steel.

这个不锈钢产品属于次等级别。

youdao

In fact, it is so good at resisting fade, rust and corrosion, that this grade of steel is often used in Marine environments and since it is nickel free it is also used in surgical procedures.

事实上，它是如此好抗褪色，生锈和腐蚀，这种钢级往往是在海洋环境中使用，因为它是无镍，也是在外科手术中。

youdao

In this paper, the internal transverse cracks of continuous casting slabs of a niobium bearing peritectic grade of steel are investigated using electron probe microanalyser and optical microscope.

连铸坯厚度中心存在的内裂纹在后续的轧制过程中轧不合而对产品的质量带来重大的影响。

youdao

Instead of being produced from all high-grade steel, most of The Guardian is produced in mostly forms of carbon fiber and thick polycarbonate as well as some steel.

FORBES: Connect

Every ton of high-grade yields six hundred kilos of steel.

NEWYORKER: The Miner��s Daughter

Coking coal is high grade coal used in the production of steel.

BBC: Rio Tinto raises bid for Australia's Riversdale