Heat aging test box result expression formula

The formula of heat aging test box result is as follows:

1. Performance change rate is calculated according to formula (1)

P = EQ \ F (Xa-X0, X0) × 100 -------------------- (1)

In the formula: P ------ Performance change rate,%

Xa ------ Test the performance of the sample after aging.

X0 ------ The measured value of the sample before aging.

Second, the hardness change is calculated according to formula (2)

H = Xa-X0 -------------------- (2)

In the formula: H ----- hardness change;

Xa ------ Determination of hardness after aging.

X0 ------ Determination of hardness after aging of samples.

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