Impeller is the most important rotate parts for a pump or compressor.

Qingdao Refidus has rich experience in precision casting impeller manufacturing in China. there are different materials for the impeller, such as bronze and stainless steel. Here are the comparing of the materials.

Different cost and price

Cost of stainless steel 304 and bronze is similar, Stainless steel 316 is higher
The material level affect the price much.

The different operating temperature

Bronze is excellent at low temperature performance. even minus 100 degree centigrade. Stainless steel is fragile at low temperature.
But strength of stainless steel is much higher at normal temperature.

The efficiency is different

Stainless steel impeller is higher efficiency than bronze impeller.

Investment casting process at Refidus

We offer various kinds of metal for customized castings. As a dedicated contract manufacturing vendor in China. Qingdao Refidus Machinery Co.,Ltd. provide OEM investment casting service for global customers.