MIM - Metal Injection Molding - Tamau Italia srl

MIM: Metal Injection Molding

The MIM technology is the most efficient technique when it comes to high tolerances and complex

The metal injection uses feedstock which consists of a metal
compound made with binders and powdered metals.

Once the feedstock has been injected into the mould, there
comes both a debiding and sintering phase.

This allows for the reduction or elimination of “non value added”
machining process such as filleting, embossments, helical geometries,
etc.

What is achieved is a high level of precision at the lowest cost to
production.

MIM technology is mostly applied when it concerns:

PROCESS	TYPE	LIMITATIONS	MIM ADVANTAGES
Lost wax casting	Textile Medical Valves Devices for weapons Watchmaking	tolerances joint quantity with an elaborate and long work cycle additional processing excessive roughness costs	high precision high repeatability low roughness elimination of mechanical machining complex shapes low costs
Diecasting	Mechanical parts in general	very low mechanical characteristics expensive molds limitation of complex shapes	excellent mechanical characteristics (density 95-97%) wide choice of materials
mechanical processing	Mechanical parts in general	waste processing material cost of tools and equipment limitation of complex shapes	all the material is recycled for production the low tolerances allow in most cases to immediately use the details no additional tooling costs
synthesizing	igear trees mechanical parts	very low mechanical characteristics very low density limitation of complex shapes	excellent mechanical characteristics (density 95-97%) high density complex shapes

Material Group	Alloy Name	UTS MPa	YS (0,2%) MPa	Elong %	Hardness	Density g/cm3
Low Alloy Steels	8% Ni-Steel MIM 4605 as sintered MIM 4605 heat treated	413 689 1653	255 482 1446	26 15 4	60 HRB 90 HRB 48 HRC	7,6 7,5 7,5
Austenitic Steinless Steel	AISI 316L AISI 304L	482	241	30	65 HRB	7,7 7,7
Ferrite SS Stainless Steel	AISI 340	413	241	30	65 HRB	7,5
Martens Tic Stainless Steel	AISI 420 AISI 420 (Premium) AISI 440C (Premium)	1033 1929 1584	1643 1343	8 4	50 HRC 52 HRC 59 HRC	7,3 7,6 7,5
Precipitation Hardening Stainless Steel	17-4 has sintered 17-4 PH H900	827 1240	640 1102	12 7	25 HRC 36 HRC	7,6 7,6
Duplex Structure Stainless Steel	ASTM A276 (2205)	620	516	27	93 HRB	7,5
Soft Magnetic Materials	Fe-Si Alloy 50	427 448	262 158	20 33	68 HRB 58 HRB	7,5 7,7
Copper Based	Cu 100%					8,3
Titanium	TI-GAI-4V (Annealed) TI-GAI-4V (AGED)	744 923	716 827	10 4		4,2 4,2
High Speed Steel	M2	1200	800		65 HRC	7,9
Tungsten Heavy Alloy	WHA				320Hv1	17,8