高温部品に適したPEEKの選び方
An engineer opens a glass-fiber PEEK datasheet, sees an HDT of 315°C, and signs off a part for 250°C continuous service. The line runs. Six months later, that part has crept out of tolerance, a seal has lost preload, and a customer is asking why. I have watched this exact mistake cost a downstream manufacturer a full production batch. The number was real. The reading was wrong. The fix is knowing which of PEEK’s four temperature numbers actually governs your part — and reading them in the right order. Why HDT Is the Number That Fools Most Buyers Heat deflection temperature (HDT) is a short-term test, not a service rating, … 続きを読む
