Corrosion-resistant alloys—including Austenitic stainless steels (like 316L and 304L), Duplex steels, and specialty high-alloy grades—are engineered to survive where standard metals fail. Whether deployed in highly acidic chemical processing plants, saline subsea environments, or sterile medical facilities, these powders are used to print complex, chemical-ready geometries or to apply an impenetrable protective barrier over lower-cost carbon steel components.
In Additive Manufacturing (LPBF/DED) and advanced surface engineering (such as HVOF and Laser Cladding), these powders are utilized to create parts and coatings that rely on a "passive layer"—a microscopic, self-healing chromium-oxide film that forms on the surface to block chemical attack. In cladding applications, engineers use these powders to coat the inside of massive flow-control valves or miles of subsea piping, saving the enormous cost of manufacturing the entire component out of solid stainless steel.
| Product | Fe | Cr | Ni | Si | Mo | Al | Other | Key Characteristics and Application |
|---|---|---|---|---|---|---|---|---|
| Lattice™ CRA - 304 | Base | 18 | 9 | - | - | - | C≤0.12 | High-purity 18/9 grade with excellent formability. Ideal for structural interior components, fasteners, and fluid-handling hardware where standard corrosion resistance is required. |
| Lattice™ CRA - FeCr30 | Base | 30 | ≤0.30 | - | - | - | C≤0.30 O≤0.30 Si≤1.0 Ca≤0.20 | Exceptional resistance to high-temperature oxidation and acidic environments. Used for exhaust system components and chemical processing hardware. |
| Lattice™ CRA - 316 | Base | 17 | 12 | - | 2.5 | <0.6 | Mn≤0.8 C≤0.01 | Extra-low carbon version for superior weldability and resistance to pitting. The industry standard for aerospace manifolds and components exposed to marine or salt spray. |
| Lattice™ CRA - 316 | Base | 19 | 9 | - | 4.5 | - | N Si Mn V C≤0.08 | Fortified with Nitrogen and Vanadium for increased strength at temperature. Engineered for high-pressure fuel connectors and complex hydraulic valve bodies. |
| Lattice™ CRA - 316 AC | Base | 19 | 11 | - | 2.5 | - | C≤0.08 O≤0.05 Mn1.5 | Ultra-low oxygen gas-atomized powder. Optimized for high-density 3D printing of critical aerospace cooling channels and lightweight lattice structures. |
| Lattice™ CRA - 431 | Base | 13 | 2.2 | - | - | - | Mn-0.8 C-0.2 | Combines the best corrosion resistance of the 400-series with high strength. Preferred for aerospace shafts, high-tensile fasteners, and landing gear pins. |
| Lattice™ CRA - 410 | Base | 13 | - | - | - | - | C≤0.3 Mn≤0.8 Si≤0.8 | A heat-treatable grade offering high strength and moderate corrosion resistance. Designed for turbine compressor blades and valve internal components. |
| Lattice™ CRA - 316Si | Base | 18 | 9.5 | 0.8 | 0.9 | - | Cu-0.9 C≤0.12 C≤0.45 | Silicon-enhanced for better galling resistance and molten metal flow. Used for precision aerospace seals and parts requiring high dimensional stability during thermal cycling. |
