Metal 3D Printing Services for Custom Industrial Parts
Metal 3D printing services using Direct Metal Laser Sintering (DMLS) and Binder Jetting for aerospace, medical, and industrial parts in titanium, stainless steel, Inconel, and cobalt chrome. Fiber lasers at 200 to 400 W build parts in 20 to 60 μm layers at our AS9100D and ISO 13485 certified facility in Shenzhen.
Upload your STEP, IGES, or STL file to receive a design-for-additive-manufacturing review and quote within 24 hours.
- Prototype lead time 7 to 10 business days, production 3 to 5 weeks
- Tolerances ±0.1 mm standard, ±0.05 mm with post-machining
- Titanium, stainless, Inconel, cobalt chrome, maraging steel, and aluminum
- No minimum order. Single prototypes through serialized production batches
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Metal 3D Printing Manufacturing Capabilities
These specifications apply across our DMLS and Binder Jetting platforms. Exact tolerance and finish depend on material, geometry, and post-processing.
| Feature | Description |
|---|---|
| General Tolerance | ±0.1 mm as-built on DMLS parts |
| Tight Tolerance | ±0.05 mm on features finished by CNC machining |
| Surface Finish | Ra 6–10 μm as-built DMLS, Ra 10–15 μm Binder Jetting |
| Layer Thickness | 20 to 60 μm on DMLS, 50 μm on Binder Jetting |
Metal 3D Printing Materials
We build in 8+ metal powders across titanium, stainless and tool steels, superalloys, and aluminum, each with mill-certified powder lots.
Titanium Alloys
| Grade | Tensile / Yield | Typical Use |
|---|---|---|
| Ti6Al4V | 1170 / 1100 MPa | Medical implants, aerospace structures |
Stainless and Tool Steels
| Grade | Tensile / Yield | Typical Use |
|---|---|---|
| 316L Stainless | 640 / 580 MPa | Corrosion-resistant parts |
| 17-4 PH Stainless | 1310 / 1240 MPa | High-strength aerospace fittings |
| Maraging Steel, H13 | – | Tooling inserts, high-hardness parts |
Superalloys
| Grade | Typical Use |
|---|---|
| Inconel 718 | Turbine components, high-temperature service |
| Cobalt Chrome | Dental and orthopedic implants |
Aluminum & BJ Metals
| Grade | Tensile / Yield | Typical Use |
|---|---|---|
| AlSi10Mg (DMLS) | 460 / 270 MPa | Aerospace heat exchangers |
| 420 Stainless (Binder Jetting, bronze infiltrated) | – | Medium-volume production parts |
Metal 3D Printing Post-Processing
Every build goes through stress relief and inspection in-house before it ships, with further finishing available depending on the application.
Surface Finish
SPECIFICATION
As-Built
Parts ship straight off the platform with supports removed. Standard finish for internal channels and non-critical surfaces at Ra 6 to 10 μm.
Bead Blasting
Media blasting removes loose powder and produces a uniform matte surface on DMLS and Binder Jetting parts before further processing.
Machined Critical Faces
CNC finishing on mating faces, bores, and sealing surfaces tightens tolerance from ±0.1 mm as-built to ±0.05 mm where fit matters.
Stress Relief & Heat Treat
Solution annealing and age hardening per alloy, such as 17-4 PH at 1040 °C solution and 480 °C age, or Inconel 718 solution treatment at 980 °C plus double aging.
Sintering and Infiltration
Binder Jetting parts are sintered at 1100 to 1300 °C and bronze-infiltrated to close porosity in 420 stainless, compensating for 1 to 2% shrinkage.
Polishing and Passivation
Mechanical polishing for sealing faces and cosmetic surfaces, plus passivation on stainless and cobalt chrome parts for medical and food-contact use.
Types of Metal 3D Printing We Offer
We run two metal additive platforms under one roof, chosen by alloy, geometry, and volume.
DMLS / LPBF
Direct Metal Laser Sintering uses a 200 to 400 W fiber laser to fuse metal powder in 20 to 60 μm layers at scan speeds to 1200 mm/s, the default for complex alloys like Ti6Al4V, Inconel 718, and cobalt chrome.
Selective Laser Melting
SLM fully melts each powder layer rather than sintering it, producing near-fully-dense parts for load-bearing titanium and stainless components that need minimal porosity.
Binder Jetting
A liquid binder joins powder layer by layer at 100 mm/s with 50 μm layers, then the part is sintered and bronze-infiltrated, a faster route for medium-volume 420 stainless production.
Applications of Metal 3D Printing
Turbine blades with internal cooling channels, fuel nozzles with complex spray patterns, lightweight structural brackets, and heat exchangers.
Patient-specific titanium hip implants, dental prosthetics and surgical guides, and porous structures engineered for bone ingrowth.
Exhaust manifolds, engine mounts, and restoration parts in stainless steel and aluminum alloys, built without hard tooling.
Conformal cooling channels for injection molds, custom jigs and fixtures, wear-resistant dies, and cutting inserts with chip-breaker geometries.
Turbine components and pressure vessels with integrated internal features that are difficult or impossible to machine conventionally.
High-strength titanium and steel components for tactical equipment and platforms where weight reduction matters as much as strength.
Valve bodies, downhole tooling, and corrosion-resistant fittings in Inconel and duplex stainless for high-pressure, high-temperature service.
Lightweight brackets, manifolds, and housings that consolidate multiple machined parts into one build, cutting assembly weight and time.
End-effector mounts, lightweight structural arms, and complex internal channels for pneumatic or cooling lines in aluminum and titanium.
Yijin Solution Metal 3D Printing Factory
Yijin Solution operates a 25,000+ m² manufacturing facility in Shenzhen, China. The metal AM cell runs DMLS and Binder Jetting platforms with 200 to 400 W fiber lasers, layer thicknesses from 20 to 60 μm, and dedicated post-processing for stress relief, solution annealing, and age hardening.
Zeiss CMMs and ASTM E8 tensile testing verify every build against AS9100D, ISO 13485, and IATF 16949 quality systems, with mill test reports issued per ASTM E1479.
What's Metal 3D Printing
Metal 3D printing, also called metal additive manufacturing, builds parts by fusing metal powder layer by layer instead of removing material from a solid block. A laser or binder joins each thin layer to the one below it, following a digital model until the part is complete.
This lets a design include internal channels, lattice structures, and consolidated assemblies that would be impossible or very costly to machine, at the cost of rougher as-built surfaces and the need for support structures on some geometries.
How Metal 3D Printing Works
Metal 3D printing follows a repeatable sequence from digital file to finished part.
- File preparation: your CAD model is oriented, supported, and sliced into 20 to 60 μm layers.
- Build: a laser or binder fuses metal powder layer by layer inside an argon-purged or open build chamber.
- Support removal and heat treatment: parts are separated from the build plate, then stress-relieved or solution-treated per alloy.
- Finishing and inspection: critical faces are machined, surfaces are blasted or polished, and dimensions are verified against the drawing.
Why Choose Yijin Solution for Metal 3D Printing
We control every step of metal additive manufacturing from file review through build, heat treatment, and inspection.
Zeiss CMMs and ASTM E8 tensile testing verify every build. Parts hold ±0.1 mm as-built and ±0.05 mm on machined critical features.
Prototypes ship in 7 to 10 business days and production orders in 3 to 5 weeks, with DMLS and Binder Jetting running in parallel.
Single-piece prototypes and medium-volume production runs go through the same platforms and inspection standards. No minimum order quantity.
AS9100D, ISO 13485, IATF 16949, and ISO 9001 certified, with material traceability and mill test reports on every build.
Titanium, stainless and tool steels, Inconel, cobalt chrome, maraging steel, and aluminum, chosen for the alloy properties your part needs.
Conformal cooling, internal lattices, and consolidated assemblies that traditional machining and casting cannot produce in one build.
FAQs About Metal 3D Printing
Is Metal 3D Printing Worth It?
Metal 3D printing is cost-effective for parts requiring complex geometries like conformal cooling channels or consolidated assemblies, since it eliminates tooling costs and long lead times. For simple geometries at higher volumes, CNC machining usually remains more economical, so we help you compare both routes during quoting.
What Are the Downsides of Metal 3D Printing?
Support removal adds labor and leaves a rougher finish than machining on affected surfaces. Parts carry residual stresses that require heat treatment, and build failures from powder contamination or poor supports can waste significant build time, which is why we inspect powder lots and simulate builds before committing a job.
What Is the 45 Degree Rule in Metal 3D Printing?
Surfaces angled less than 45 degrees from horizontal generally need supports in powder bed fusion to prevent collapse during the build, while surfaces beyond 45 degrees self-support as each layer bonds to enough underlying material. Violating this rule typically produces a rough finish or an outright build failure.
What Materials Are Used in Metal 3D Printing Services?
Common materials include titanium alloys like Ti6Al4V, stainless steels such as 316L and 17-4 PH, nickel superalloys like Inconel 718, cobalt chrome, maraging steel, tool steel, and aluminum alloys such as AlSi10Mg, depending on the strength, temperature, and biocompatibility your application needs.
How Much Does Metal 3D Printing Cost?
Cost depends on part volume, material, and post-processing, since metal powder and machine time cost more per hour than CNC machining. Complex geometries that consolidate several machined parts into one build often offset the higher per-hour cost. Upload your CAD file for a quote based on your specific design and material.
What Is the Difference Between DMLS/SLM and Binder Jetting?
DMLS and SLM use a laser to sinter or fully melt metal powder layer by layer, producing dense parts directly in the machine but requiring supports on steep overhangs. Binder Jetting uses a liquid binder to bond powder at room temperature, then sinters the part afterward, which is faster for medium-volume batches but needs shrinkage compensation.
Can Metal 3D Printing Produce High-Volume Parts?
Binder Jetting is the more practical route for higher-volume metal 3D printing, since multiple parts can be packed into one build without laser scan-time penalties, and post-build sintering runs in batches. DMLS remains better suited to lower-volume, higher-complexity parts where geometry matters more than unit cost.
How Do I Get a Quote for Metal 3D Printing?
Upload your STEP, IGES, or STL file for an instant quote based on material, volume, and build orientation. Our engineering team reviews complex geometries for support strategy and post-processing needs, and returns a design-for-additive-manufacturing report alongside the quote within 24 hours.
What Are the Advantages of Metal 3D Printing Over Traditional Machining?
Metal 3D printing produces complex geometries such as internal cooling channels and lattice structures that are difficult or impossible to machine, without cutting tool access limitations. It also consolidates multi-part assemblies into a single build and skips hard tooling, which is often faster and more cost-effective for low to medium production runs.
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