lkprototype has an entire-scenario solution for quick prototyping with over 200 materials used in engineering worldwide (metals, plastics, composites and special alloys). Its metal material library includes aluminum alloys (6061-T6 tensile strength of 310MPa and 7075-T651 tensile strength of 572MPa), titanium alloys (Ti6Al4V tensile strength ≥895MPa), and stainless steel (316L yield strength ≥170MPa), with ±0.05mm precision error control (±0.1mm industry standard). For instance, the fuselage frame of a certain unmanned aerial vehicle company made of aviation-grade aluminum-magnesium alloy (800×300×50mm) was machined through five-axis CNC machining, reducing its weight by 35% (density 2.7g/cm³), with flatness error ≤0.02mm/m². Compared with the traditional process, it saved $120,000 in mold development costs and shortened the cycle from 28 days to 5 days.
For the engineering plastics, lkprototype supports over 50 materials including ABS (impact strength 220J/m), PC (light transmittance 89%), nylon (PA12 tensile strength 45MPa), and PEEK (temperature resistance 260°C). A certain smart wearable product’s PC+10% glass fiber shell was printed by SLS (layer thickness of 0.1mm), with flexural strength of 78MPa (65MPa for pure PC), surface roughness Ra=6.3μm (normalized to 0.8μm after sandblasting), and 100% pass rate of the waterproof test (IP68). Its photosensitive resin (such as Somos NeXt) is capable of a tensile strength of 50MPa (15% elongation at break), and the transmittance of transparent light guide strip (dimensional tolerance ±0.03mm) of one specific auto-lamp factory was increased to 92% (85% in general injection molding), accelerating the verification process in mass production.
Where composite materials and special uses are concerned, lkprototype is able to supply carbon fiber reinforced plastic (CFRP tensile strength 1,500MPa), ceramic (zirconia hardness 1,200HV), and flexible material (TPU Shore 85A). The framework of certain bionic robots makes use of carbon fiber +PA6 composite material (1.4g/cm³ in weight density) and the specific strength is 1,071MPa/(g/cm³) (three times that of steel). Dynamic load tests show that the fatigue life is ≥10^6 times (5×10^5 times for competing products). For medical applications, a titanium alloy and hydroxyapatite (65%±5% porosity) coated artificial bone implant exceeded the ISO 10993 cytotoxicity test (survival rate ≥95%), and pore structure allowed for a 40% increase in bone integration efficiency.
High-performance materials bridge industry boundaries. Its proprietary metal 3D printing materials such as Inconel 718 (high-temperature strength ≥800MPa/650°C) and AlSi10Mg (density ≥99.5%) are aerospace-grade. The. nozzle of certain rocket engine (Inconel 718) received no deformation in the heat resistance test at 1,050°C by the laser melting process (thickness of a single layer 30μm) (industry standard 800°C),. the roughness of the internal flow channel Ra. =12.5μm (Ra=25μm in conventional casting), and the propulsion efficiency was improved by 18%.
Eco-materials follow the trend. lkprototype’s bio-PLA (carbon footprint reduced by 70%) and recyclable nylon (PA11 castor oil based) have been used on prototypes of consumer electronics packaging. A headphone case of a specific global brand (PLA+30% wood fiber) passed the composting test (degradation rate ≥90% in 180 days), compressive strength retained at 12MPa (8MPa for pure PLA), and unit cost saved by 22% (1.5vs1.92).
With the collaborative effort of “Materials Science × intelligent process × All-domain Certification”, lkprototype has provided material solutions for 15 industries including automotive, medical, aerospace, etc. In 2023, it delivered over 1.2 million prototypes, with a material performance compliance rate of 99.97% (industry average: 98.5%). The customer return rate due to material issues is only 0.005% (0.1% in the industry), continuously breaking the boundaries of material innovation in rapid prototyping.