MIM MATERIALS

The powders used in MIM come in a variety of chemistries, particle sizes, and particle shapes. Powder availability determines which engineering materials can be produced by MIM; fortunately, most of the widely used engineering compositions are readily available.

Alloys can be formed by mixing elemental powders, or the combination of master alloy powders with elemental powders, to match the desired alloy. Another approach is to use pre-alloyed power where each particle contains all of the elements. Ferrous alloys are popular in MIM, and nearly half of the commercial activity is in stainless steels.

Most common engineering alloys are possible with MIM, but the most popular alloys are surgical steel MIM-17-4 PH (AISI 630) and austenitic stainless steels MIM-316L (AISI 316L).

The most common alloy families are:

Iron
Low-alloy steels
Stainless steels

Other Alloys:

Aluminum alloys
Bio-compatible alloys
Carbides
Ceramics
Cobalt-based alloys
Controlled-expansion alloys,
Copper and copper alloys
Hardmetals
Heavy-metal alloys

Magnetic alloys (soft and hard)
Nickel-based alloys
Precious metals
Reactive metals
Shape-memory alloys
Specialty alloys
Titanium and titanium alloys
Tool steels

For additional information on how to specify materials for components made using the MIM process, download a copy of MPIF Standard 35—Metal Injection Molded Parts. This standard will help guide you during your design process and throughout discussions with your fabricator.

Materials List

The Metal Injection Molding Association (MIMA) keeps a detailed list of materials for MIM; however, please contact your supplier to see if the alloy or a substitute alloy is available.

Alloy Family	Materials
Austenitic Stainless Steels (and Master Alloys)	303, 303L 304, 304L, 304+Ti 309 310, 310 C2, 310S, 310N 316B, 316F, 316L, 316J1L, 316Ti, 314 317, 317L 321	329, 329J1 347 904 Fe22Cr20Ni6Mo HK30 Nickel-free stainless Nitronic 60
Duplex Stainless Steels	SAF2507 SAF2205 316 duplex
Ferritic/Martensitic Stainless Steels (and Master Alloys)	410 Series, 410L 420 Series, 418 430 Series, 430L, 434	440 Series Fe30Cr Fe50Cr
Precipitation-Hardening Stainless Steels	15-5PH 17-4PH 17-7PH
Low-Alloy Steels (and Master Alloys)	1010 1018 1045 1050 4130A 4140 42CrMo4 4340 4365 4650 *replaced by 4605	4605 5130 5140 8620 8740 52100 Fe2%Ni Fe8%Ni Fe8Cr1.9Ni2Mo
Magnetic Alloys	Fe49Co2V Fe50Ni Fe3Si Fe50Co Fe6.5Si	Fe5.5Si Alnico Alnico 8 Sendust
Nickel-Base Alloys	Hastelloy® C Hastelloy® C22 Hastelloy® C276 Hastelloy® X Inconel® 625 nconel® 718	Inconel® 700 series Monel® 400 Nimonic® 80A Nimonic® 90 GHS4
Copper	HC Cu (99.9%) OFHC Cu Cu10Al Cu-Sn (1-50%) Cu-Ni (1-99%)
Functional Alloys	Invar® Kovar® Kovar® F15 Fe36Ni Fe50Ni Fe29Ni17Co Fe-Cr (1-50%) Fe-Ni (1-99%)	Fe-W (1-40%) Fe36Ni-13Co Fe35Co Ni20Cr Ni50Cr Super Invar® PB47 PB47Mn
Others	Aluminum Al2O3 Gold Silver	Titanium WC ZrO2
Cobalt-Base Alloys	Stellite® 6
Tool Steels & High-Speed Steels	A6 D2 T42 H10 H11 H12	H13 M2 M4 S2 S7 T15

Find a Supplier or Fabricator

Whether you’re looking for a powder or feedstock supplier, an equipment provider or a fabricator of MIM components, our member directory has you covered. Explore our searchable directory of Metal Injection Molding Association Members to find the right company to fit your needs.

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MIM MATERIALS

The most common alloy families are:

Other Alloys:

Materials List

Find a Supplier or Fabricator

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