Stainless Steel Optional for MIM The most commonly metal injection molded stainless steels are 304 and 316/316L due to their excellent corrosion resistance and easier fabrication. Precipitation-hardening alloys can achieve very high strength through aging but are more difficult to MIM. Some common stainless steel alloys are used in metal injection molding (MIM) , including: 304 Stainless Steel 316L Stainless Steel 17-4 PH Stainless Steel 420 Stainless Steel 440C Stainless Steel 430 Stainless Steel 316 Stainless Steel MIM-Stainless Steel Material Comparison Austenitic grades offer the best corrosion resistance, martensitic grades have the highest hardness and strength, and ferritic grades provide an economical option when hardness is not critical. Here is a brief comparison of standard stainless steel alloys used in metal injection molding (MIM): 304: Austenitic stainless steel. Excellent corrosion resistance and good formability. Lower strength and hardness. It is commonly used for con
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