Metal parts with geometry CNC can't reach.
Direct Metal Laser Sintering for titanium, aluminum, stainless steel, Inconel and tool steel. Topology-optimized brackets, conformal cooling channels, lattice structures — production-qualified with HIP and post-machining.
Metal 3D printing
DMLS is rarely the cheapest way to make a simple part. It dominates when the part geometry is impossible — or nearly impossible — any other way.
DMLS alloys in stock.
Ti-6Al-4V
Grade 5 titanium. High strength-to-weight, biocompatible (Grade 23 ELI). Yield 828 MPa, density 4.43 g/cc.
AlSi10Mg
Aluminum-silicon casting alloy. Excellent for thin walls and complex geometry. Yield 240 MPa, density 2.67 g/cc.
316L Stainless
Marine-grade, corrosion-resistant austenitic stainless. Yield 530 MPa (as-printed), density 7.99 g/cc.
17-4 PH Stainless
Precipitation hardening. Yield 1100 MPa after H900 heat treat. Higher strength than 316L.
Inconel 718
Nickel superalloy. Retains strength at 700°C. Yield 1036 MPa (aged), density 8.19 g/cc.
Inconel 625
Nickel-chromium superalloy. Excellent oxidation resistance. Yield 760 MPa, density 8.44 g/cc.
Maraging Steel MS1
Tool steel 1.2709. High strength with dimensional stability. Yield 1900 MPa after aging.
Cobalt Chrome
CoCrMo (F75). Biocompatible, wear-resistant. Common in dental and orthopedic implants.
Copper CuCrZr
Chromium-zirconium copper. High conductivity with strength. Heat-sink and electrical applications.
Geometries that break CNC.
Topology-optimized brackets
Organic weight-reduced shapes from generative software (nTopology, Fusion 360). Aerospace brackets routinely 40–60% lighter at equal stiffness.
Conformal cooling channels
Curved cooling channels follow the part geometry rather than straight drilled holes. Cuts injection mold cycle time 15–40% in tool inserts.
Lattice and gyroid structures
Internal lattices reduce weight, absorb impact, or act as heat exchangers. Impossible to machine; trivial to print.
Integrated assembly reduction
Multi-part assemblies become one-piece DMLS parts. Eliminates fasteners, seals, tolerance stack-up. Example: GE Catalyst turboprop reduced 855 parts to 12.
Functionally graded density
Solid walls transitioning to internal lattice in a single print. Structural stiffness where needed, weight savings elsewhere.
Hybrid DMLS + CNC workflow
Print near-net shape in DMLS, then CNC-machine critical mating surfaces. Best of both worlds: complex geometry + precision interfaces.
DMLS is rarely the cheapest way to make a simple part. It dominates when the part geometry is impossible — or nearly impossible — any other way.
Metal parts with geometry CNC can't reach — questions
What metals can PifyC 3D print via DMLS?
Titanium Ti-6Al-4V (Grade 23, medical-grade ELI available), aluminum AlSi10Mg, stainless steel 316L and 17-4 PH, Inconel 625 and 718 (superalloys), maraging tool steel MS1 (1.2709). Custom alloys may be available with 4–6 week lead time depending on powder availability.
What is the build volume for DMLS?
Our DMLS system has a build envelope of 250 × 250 × 300 mm. Larger parts must be split and welded or fastened. For parts up to that size, we can pack multiple parts into one build to reduce per-part cost.
What tolerances can DMLS hold as-printed?
As-printed tolerances are ±0.1 mm or ±0.2% of the feature dimension, whichever is greater. Surface finish is Ra 6–10 µm as-printed (rough). For precision mating features and smoother finishes, we recommend hybrid workflow: DMLS print + CNC finish of critical surfaces. This achieves ±0.01 mm tolerances on bearing seats, threaded holes, and alignment features.
Do you offer HIP and heat treatment for metal 3D printed parts?
Yes. Hot Isostatic Pressing (HIP) for porosity reduction, solution annealing, age hardening, and stress relief. HIP is standard for flight-critical aerospace parts, taking as-printed density from 99.8% to 99.99%+ and closing internal voids. We work with vetted certified HIP partners.
Is DMLS suitable for production, or just prototypes?
DMLS is production-capable. Our aerospace customers use it for flight-qualified brackets, medical customers for implantable titanium components (with post-processing), and motorsport teams for optimized brake calipers and suspension components. For runs above ~200 parts, compare total cost against CNC or investment casting.
What is unique about topology-optimized DMLS parts?
DMLS enables geometries CNC cannot reach: organic weight-optimized shapes (typically 40–60% lighter than machined equivalent), internal lattice structures, conformal cooling channels in mold inserts, integrated features that would otherwise require assembly. Combined with generative design software, topology-optimized DMLS parts are transforming aerospace brackets and motorsport components.
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