Experimental Investigations of Noise Control in Planetary Gear Set by Phasing

Table 2

Mechanical properties of Nylon-6 gear box.

Mechanical properties	ASTM test method	Units	Nylon 6/6	Nylon 6/6 GF30
Tensile strength 73°F	D638	psi	12,400	27,000
Elongation 73°F	D638	%	90	3
Flexural strength, 73°F	D790	psi	17,000	39,100
Flexural modulus, 73°F	D790	psi	4.1 × 10^5	12 × 10^5
Izod impact strength, Notched, 73°F	D256	—	R120-M79	M101
Rockwell hardness	D785	ft-lbs/in.	1.2	2.1