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Advanced Metalworking manufactures off-the-shelf low alloy steel feedstock for heat treatment and other molding applications. Our pre-mixed MIM-4605 (formerly 4650) feedstock will conform to MPIF Standard 35 Specification MIM-4605 when properly processed. We can also design and produce custom feedstock with your specified binder content, metal content or other feedstock properties.

We also have the following available:
  • MIM-2200 Blended Powders (Formerly MIM-4600)
  • MIM-2700 Blended Powders
  • 4140 Blended Powders
  • 8620 Blended Powders
Reduced and non-reduced carbonyl iron powders can be combined to achieve any desired carbon level from 0.05% to 0.75%. Most commonly requested are 0.35% to 0.70%.

Our ADVAMET® feedstock shows excellent lot-to-lot reproducibility. We thoroughly check the viscosity and density of our feedstock with state-of-the-art equipment. We can meet a lot-to-lot tolerance of ±0.05g/cm³ and our variation within a feedstock lot is significantly less. Such consistent metal loading is essential for dimensional precision on a high volume production basis.

Not only will our feedstock help you produce high quality metal injection molded parts, it will also reduce overhead costs. By allowing us to supply your feedstock, you can eliminate the cost of storage, raw materials, personnel, feedstock quality assurance and specialized equipment. In addition, runners and as-molded (green) scrap can be readily recycled many times, an important factor for cost-effective production of high quality small, complex MIM parts.

Unit of Measure



N/A Proprietary wax-polymer base binder

Binder Content

N/A 7.6%

Metal Powders

N/A Molybdenum Nickel Unreduced Carbonyl Iron
Viscosity1 N/A 16,000 ± 8,000 Poise
Density2 N/A 4.84 ± 0.05 g/cm³

Powder Specification

N/A MIM-4605

Chemical Composition


N/A 1.5 – 2.5%


N/A 0.2 – 0.5%
C3 N/A 0.65 – 0.85%


N/A 0.55 – 0.85%


N/A 0.55 – 0.75%


N/A 0.30 – 0.34%


N/A Balance
  • 1 Measurement taken at 175ºC per ASTM D1238 (modified)
  • 2 Measured with helium pycnometer
  • 3 Proper processing results in 0.4 – 0.6% C in sintered part.