材料 / Engineering plastics
From sliding components to transparent covers, match the material to the job. Compare common thermoplastics, then define the grade and requirements for your part.
GPT Precision machines commonly specified engineering plastics, including POM, nylon, polycarbonate, ABS, PTFE and PMMA. Specific grades and suitability are reviewed for each project.
Material reference
Compare each family’s typical strengths, application examples and selection limits. These are starting points for review; final suitability depends on the grade and service conditions.
A useful starting point for mechanical parts that need stiffness, low moisture uptake and good sliding behavior.
Gears, bushings and precision guides.
Specify the acetal grade, loading and mating clearances. Review temperature and chemical exposure before approving the material.
Toughness and wear resistance make nylon a candidate for moving and load-bearing components.
Rollers, bushings and wear guides.
Moisture absorption can affect dimensions. Confirm the nylon grade, material condition and humidity expected during inspection and service.
Offers impact resistance and transparent grade options for parts that combine visibility with mechanical function.
Equipment covers and viewing components.
Review chemical compatibility and stress-cracking risks. Specify the required clarity and finish of machined faces; protective performance needs application-specific validation.
Combines toughness, stiffness and good machinability for general-purpose development and enclosure parts.
Housings, covers and fit-check prototypes.
Define color, visible surfaces and assembly details. Confirm temperature and outdoor exposure requirements against the chosen grade.
Low friction and broad chemical resistance make PTFE a candidate for sliding and chemically exposed components.
Seals, valve seats and sliding elements.
Review loading and creep, especially where fit must be maintained over time. Specify virgin or filled material and the governing grade requirements.
Known for clarity, acrylic is useful where the finished part’s visual appearance is a primary requirement.
Viewing windows, display parts and clear models.
Review impact, mounting stresses and edge details. Specify acceptable tool marks and any polishing or optical finish required.
Material names identify families. Grade, filler, color, stock form and supporting documentation are confirmed for the individual project.
Application-led selection
Start with the requirement that matters most. Use the guide below to frame the material discussion.
Compare load, sliding speed, mating surface and lubrication. Check wear behavior and deformation for the exact grade.
List fluids, concentration, humidity, temperature and exposure time. Include moisture-related dimensional changes in the review.
Balance visibility with impact and chemical exposure. Define the required surface finish and visual acceptance criteria.
Review thermal expansion, moisture, residual stress and loading. Agree on measurement conditions for critical fits.
Use this guide for initial screening. Check the selected grade’s technical data and validate it against the actual application.
From specification to finished part
Temperature, moisture, residual material stress and stresses introduced during machining can affect dimensional stability. Review critical fits against the grade, geometry and agreed measurement conditions.
Provide the current drawing and CAD model. Explain how the part fits, moves or interfaces with the rest of the assembly.
Define the features that control function and the criteria used to accept them. Agree on the inspection scope during quotation.
Our confirmed material categories include POM/acetal, nylon, polycarbonate, ABS, PTFE and PMMA/acrylic. Provide the complete material specification so grade availability and suitability can be reviewed for your part.
是的. Include the operating environment, functional requirements and any candidate materials. Identify who will approve the final specification or any proposed substitution before production.
Machined and molded parts can differ in material condition, dimensional behavior and surface finish. Define what the prototype must demonstrate, and validate the molded production part separately.
Mark the critical dimensions, 基准点, mating features and acceptance conditions on the drawing. Tolerances and inspection arrangements are reviewed against the material, 几何形状和预期用途.
列出所需的证书, 在您的询价中提供材料识别和批次记录. 可用文件和商定的供应范围在报价或订单审核期间确认.
