ASTM
A627-03, APPENDIXES
X1. MINIMUM ACCEPTABLE PERFORMANCE CHARACTERISTICS FOR COMPOSITE AND
HOMOGENEOUSTOOLRESISTING STEELS
NOTE X1.1—The steel types below reflect the currently available
technology and this standard is not meant to restrict in any way the future
development of alternate or emerging technologies, or both, of steels or
other composite materials that could meet the performance criteria for the
grades in Tables X1.1 and X1.2.
TABLE X1.1 Round, Tool-Resisting Steel Bars—Security Grades
Minimum Acceptable Performance Characteristics
| Grade No. |
Steel Type |
Nominal Bar
Diameter |
Drop Weight Test,
50 Blows |
Deflection Test,
Permanent Set |
Cutting Test
Minimum to
Sever the Bar |
Time Duration |
| in. |
(mm) |
ft-lb |
(j) |
lbf |
(N) |
h |
min |
| 1 |
Composite T.R. Steel |
1 |
(25.4) |
150 |
(203) |
8500 |
(37810) |
144 |
12 |
720 |
| 2 |
Composite T.R. Steel |
1 |
(25.4) |
150 |
(203) |
8500 |
(37810) |
72 |
6 |
360 |
| 3 |
Homogeneous T.R. Steel |
1 |
(25.4) |
150 |
(203) |
8500 |
(37810) |
6 |
.5 |
30 |
| 4 |
Homogeneous T.R. Steel |
7/8 |
(22.2) |
100 |
(136) |
6000 |
(26690) |
2 |
.2 |
10 |
TABLE X1.2 Flat, Tool-Resisting Steel Bars—Security Grades
Minimum Acceptable Performance Characteristics
| Grade No. |
Steel Type |
Dimensions |
Hardness Test
Rockwell C |
Cutting Test,
Minimum Number |
Time
Minimum |
| in. |
(mm) |
h |
min |
| 1 |
Composite T.R. Steel |
3/8 by 2 1/2 |
(9.5 by 63.5) |
Maximum HRC-45 |
72 |
6 |
360 |
| 2 |
Composite T.R. Steel |
3/8 by 2 1/2 |
(9.5 by 63.5) |
Maximum HRC-45 |
36 |
3 |
180 |
| 3 |
Homogeneous T.R. Steel |
5/16 by 2 1/4 |
(7.9 by 57.2) |
Maximum HRC-45 |
3 |
0.25 |
15 |
| 4 |
Homogeneous T.R. Steel |
1/48 by 2 |
(6.4 by 50.8) |
Maximum HRC-45 |
2 |
0.17 |
10 |