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Metal Injection Moulding โ€” Amsol Industries
Manufacturing Capability

Metal Injection Moulding.

Small Parts. Complex Geometry. MIM is built for small, complex metal components that need the design freedom of injection moulding with the strength of metal. Amsol supports precision miniature metal parts for OEMs where CNC machining is too costly, investment casting is too heavy, and powdered metal needs better geometry.

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Process 01
Feedstock Preparation
Fine metal powder + binder system ยท injection-ready compound.
Process 02
Injection Moulding
Complex small parts moulded like plastic ยท repeatable cavity geometry.
Process 03
Debinding & Sintering
Binder removed ยท part sintered to near-full density ยท final shrinkage controlled.
Process Flow

From Powder to Finished MIM Part โ€” 6 Steps

Every MIM component at Amsol follows a controlled route from feasibility review to sizing, finishing, and inspection.

01
Drawing & Feasibility Review
Geometry, wall thickness, tolerance, volume, and material suitability reviewed.
02
Tooling & Shrinkage Planning
Mould cavity designed with shrinkage allowance and gate strategy.
03
Feedstock Injection
Metal powder-binder feedstock injected into mould cavity.
04
Debinding
Binder removed through solvent or thermal process.
05
Sintering
Part densified at high temperature to achieve final metal properties.
06
Sizing, Finishing & Inspection
Secondary machining, polishing, passivation, and dimensional checks completed.
Process Deep-Dive

Metal Injection Moulding Capability

MIM combines metal powder, moulding logic, controlled shrinkage, and finishing discipline to produce small, complex, repeatable metal components.

Capability 01
MIM Feedstock & Tooling
โš—๏ธ Feedstock & Tooling
Metal Powder, Moulding Logic, Production Discipline.
MIM starts before the mould opens. The right powder, binder, cavity design, gate location, and shrinkage allowance decide the final part. Amsol reviews the part for wall thickness, flow, undercuts, tolerance zones, and sintering behaviour before tooling commitment.
0.1โ€“100g
Typical part weight
Fine Powder
Metal feedstock
High Complexity
Geometry advantage
Tooling-Based
Repeatability
Small parts ยท complex cavities ยท thin features ยท repeatable production
Capability 02
Injection Moulding Stage
โ–ฃ Injection Moulding
Plastic-Like Forming. Metal-Part Outcome.
The feedstock is injected into a precision mould to form the โ€œgreen part.โ€ This stage allows small, complex features that would be expensive or impossible to machine. MIM works best when the part needs repeatability, small size, complex shape, and production volume.
High Volume
Best production fit
Thin Features
Design advantage
Multi-Cavity Tooling
Cost efficiency
Near-Net Shape
Lower machining
Medical ยท locks ยท connectors ยท tools ยท miniature hardware
Capability 03
Debinding, Sintering & Finishing
๐Ÿ”ฅ Sintering & Finishing
The Real Metal Part Is Made After Moulding.
After moulding, the binder is removed and the part is sintered at high temperature. The component shrinks predictably to its final dense metal form. Secondary operations like sizing, machining, polishing, passivation, or heat treatment can be added where required.
95โ€“98%
Density range typical
Controlled Shrinkage
Sintering requirement
SS316 / 17-4PH
Common grades
Secondary Finishing
Optional
Debinding ยท sintering ยท passivation ยท polishing ยท heat treatment
Material Capability

MIM Material Options for Small, Strong, Complex Parts

Amsol supports MIM material selection based on corrosion resistance, strength, wear life, geometry, and production volume.

MaterialUseStrength
SS316LCorrosion-resistant miniature componentsExcellent corrosion performance, suitable for medical, marine, and industrial hardware.
17-4PH Stainless SteelStrength-critical miniature partsHigh strength after heat treatment, good for locking and mechanical parts.
Low Alloy SteelMechanical parts, gears, levers, tool componentsCost-effective strength for industrial applications.
Tool Steel / Special GradesWear-resistant small componentsHardness and wear life where part size is small but duty is high.
Process Selection

Choose MIM When CNC Is Too Costly for Small Complexity

MIM is strongest when the part is small, complex, repeatable, and produced in quantities that justify tooling.

Choose MIM WhenWhy It HelpsAmsol Route
Part weight is small but geometry is complex.Moulded geometry reduces machining difficulty.Feasibility review for wall thickness, undercuts, and shrinkage behaviour.
Annual volume justifies tooling.Tooling cost is spread across repeat production.Tooling and multi-cavity planning before commitment.
CNC machining creates too much waste or cycle time.Near-net-shape production reduces material loss and machining hours.MIM route with optional secondary machining only where needed.
Investment casting cannot hold the small-feature detail.Small complex cavities and thin features are better suited to moulding.Moulding-led process with controlled debinding and sintering.
The part needs metal strength with moulded geometry.Design freedom combines with dense metal performance.Material selection, sintering control, and finishing support.

Avoid MIM when the part is large or simple, quantity is too low for tooling, tight tolerances apply across every surface without secondary machining, or the material grade is not suitable for powder metallurgy.

Process Photography

The MIM Route โ€” From Powder to Finished Part

Replace placeholders with Amsol facility photography. Use feedstock, tooling, injection, debinding, sintering, finishing, and miniature component inspection images.

Industry Applications

Where Amsol MIM Components Go

MIM components are used where small metal parts need complex geometry, repeatability, strength, and production efficiency.

Automotive
Lock parts ยท sensor housings ยท actuator components ยท miniature brackets
Small Mechanical Parts
Medical & Instruments
Tool parts ยท handles ยท miniature precision components
Precision Components
Electrical
Connector bodies ยท switch parts ยท small metal housings
Connector Parts
Machinery
Levers ยท small gears ยท locking parts ยท wear inserts
Wear Inserts
Aerospace & Defence
Small precision metal parts where documentation and repeatability matter
Wear Inserts
Quality Strip

Controlled Through Tooling, Sintering, Density, and Finish.

MIM quality depends on repeatable tooling, controlled shrinkage, material traceability, density, dimensional inspection, and the right secondary finishing route.

โ–ฃ
Tooling Control
Mould cavity, gate strategy, and shrinkage allowance reviewed before production.
๐Ÿ”ฅ
Sintering Control
Thermal route controlled to achieve final density and predictable shrinkage.
โ—‡
Density Check
Part density verified where component function or customer specification requires it.
๐Ÿ“
Dimensional Inspection
Critical dimensions checked after sintering and secondary operations.
๐Ÿ“‹
Material Traceability
Material route and batch information maintained for repeat manufacturing.
โœจ
Secondary Finishing
Sizing, machining, polishing, passivation, or heat treatment added where needed.
Get Started

Have a Small Complex Metal Part?
Share It.

Amsol reviews your component for MIM suitability, tooling feasibility, material grade, shrinkage control, secondary finishing, and cost direction.

โœ“ DFM feedback in 24 hours โœ“ NDA available โœ“ ISO 9001:2015 โœ“ Process recommendation before tooling
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