|
OFFSHORE
STUD & STUDLESS CHAIN
|
| Mechanical
Properties of Offshore Stud and Studless Chain |
| |
R4 |
R3S |
R3 |
API
ORQ |
| Quality
Assurance ISO 9000 |
Required |
Required |
Required |
Required |
| Uluimate
Strength Mpa min |
860 |
770 |
690 |
641 |
| Yield
Strength Mpa min |
580 |
490 |
410 |
- |
| Reduction
of area %min |
50 |
50 |
50 |
40 |
| Elongation
%min |
12 |
15 |
17 |
17 |
| Test
temperature - degree C |
-20 |
(0) |
-20 |
(0) |
-20 |
(0) |
0 |
(-15) |
| Impact
Joules |
M |
50 |
(70) |
45 |
(65) |
40 |
(60) |
58 |
(40) |
| Average
of Three min |
W |
36 |
(50) |
33 |
(53) |
30 |
(50) |
49 |
(36) |
|
Stud
Welding
|
Not
permitted
|
At
client's discretion
|
|
Proof
Load
|
Stud
Chain
|
0.0216*A
|
0.0180*A
|
0.0156*A
|
0.0140*A
|
|
kN
min
|
Studless
Chain
|
0.0191*A
|
0.0174*A
|
0.0148*A
|
|
|
Break
Load min
|
0.0274*A
|
0.0274*A
|
0.0223*A
|
0.0211*A
|
| Note:
A=d (44-0, 08d) - is the proof load for ABS RQ3 |
|
|
|
