Steel investment castings and stainless steel investment castings are very common, JST has over 12 years experience in this field. These custom investment castings are 304 stainless steel, the finish is polishing and the roughness is Ra 0.4. MOQ is 1000 PCS, the tolerance of our castings are +/-0.25mm. The automotive investment castings were made for our European customer, which were used in the trucks. JST is an OEM manufacturer, we can make these custom steel investment castings according to your drawings. In addition, we can also do the additional machining and finish treatment in house.