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Percentage Reduction and Layer Thickness in Brass/Steel Multilayer Composites

Specimen Number

Pet Total Reduction

S4.1 S3.1 $2.1 $3.2 $4.2 $4.3 $4.4

90.31 94.67 95.91 97.14 98.02 98.83 98.87

Thickness of Brass Layer (/xm) Average _ 95 Pet CL* 2.70 1.58 1.35 0.92 0.67 0.40 0.41

+ 0.15 _+ 0.12 + 0.10 _+ 0.08 _+ 0.06 + 0.03 + 0.03

Thickness of Steel Layer (/xm) Average + 95 Pet CL* 2.14 1.08 0.69 0.51 0.32 0.19 0.17

Steel/Brass Layer Thickness Ratio

+ 0.19 _+ 0.80 + 0.08 + 0.07 + 0.04 + 0.07 _+ 0.02

0.793 0.684 0.511 0.554 0.478 0.475 0.415

*CL: confidence level. 4O0O

Table II. Comparison of X-Ray Intensities of Brass and Iron in the As-Bonded Specimen with Those in the Rolled Specimen

As Bonded 3O0O

Layer