Info on heat treatment test on LEGO elements
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For a diashow on these slides please visit YouTube:
http://www.youtube.com/watch?v=hNstZ9gTsjw



Test originally performed at Technical University of Braunschweig TUBS on July 23rd 2002.
Pictures resorted and partly commented on June 16th 2013.

Temperature increased by approx. 2°C per minute. (= 3.8 °K / min).




Key Results:

LEGO is totally destroyed, when 80°C are exceeded (valid for all typical elements, that are made of ABS).
CA-bricks and Technic-crossaxles can withstand even slightly/evidently higher temperatures up to 120 ... 150°C.

However - that is just according integrity of bricks in short time tests.


- A TEMPERATURE LIMIT OF 45°C IS RECOMMENDED!

- LEGO toys may be washed at 40°C.

- be careful with dishwashers: they may offer washing programs with 40°C but they dry at > 80°C!

- LEGO bricks from < 1963 may be made from CA ("Cellulose Acetat"). This deforms under influence of water. Do not wash unless strictly needed. Use cold water and no soap but a brush.