Test Results for
Double Eagle Products


1906 Christopher, West Plains, Missouri 65775
417-256-2598

 

Hardness Test Summary
Specimen Description Test Method Rockwell Hardness
specimens with blow ASTM D785 R45
specimens with no blow ASTM D785 R76

 

Hardness Test Details
1 x 6 With Blow and With No Blow
Test Method ASTM D785
Date of Test January 12, 1999
Operator JST, Lab Director, Materials Testing Laboratory, University of Missouri-Rolla
Procedure A
Surface Conditions as manufactured
Conditioning Procedure
and Test Conditions
71 oF, 21% relative humidity

Specimen

Thickness
(in)

Rockwell Hardness
(R Scale)

A1

0.743

55

A2

0.714

41

A3

0.731

58

A4

0.710

49

A5

0.743

42

A6

0.739

52

A7

0.745

39

A8

0.722

48

A9

0.722

47

Average

0.732

45

STDS

0.014

5.9

Specimen

Thickness
(in)

Rockwell Hardness
(R Scale)

F1

0.737

81

F2

0.724

76

F3

0.736

75

F4

0.724

66

F5

0.721

83

Average

0.728

76

STDS

0.008

6.6