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About Subsea Housing Materials
Factors
to Consider > Relevant Material
Properties > Weight, Volume and Maximum
Depth Rating
Relevant Properties of Materials
Commonly Used in Subsea Applications:
Standard PREVCO materials are
in RED.
Values are for comparison purposes only and should
not be used in design.
|
|
Material
|
Strength |
Youngs
Modulus |
Density |
Corrosion Resistance |
Thermal
Cond. |
| Ultimate |
Yield |
Impact |
General
|
Approx. Half-Cell
Galv. Voltage |
Susept.
to Pitting |
Special
Considerations |
| (Kpsi) |
(Kpsi) |
Charpy (ft*lb) |
(Mpsi) |
(lbs/Cu In) |
(volts) |
Btu/hr*ft^2*F |
Noble
Metals/Alloys |
|
|
Titanium (GRADE 5) |
150 |
120 |
--- |
16 |
0.161 |
Excel. |
-0.1 |
No |
Compatability(1) |
4 |
| Hasteloy C |
83 |
48 |
10 to 23 |
29.8 |
0.323 |
Excel. |
-0.08 |
No |
Compatability(1) |
6.5 |
| INCONEL 686 |
110 |
50 |
--- |
30 |
0.315 |
Excel. |
-0.2 |
No |
Compatability(1) |
--- |
|
Copper Nickel |
|
| 90-10 |
52 |
36 |
--- |
20.3 |
0.323 |
Good |
-0.28 |
No |
--- |
23 |
| Aluminum
|
|
|
6061-T6 |
45 |
40 |
--- |
10 |
0.098 |
Good |
-0.76 |
Yes |
Anodize Reqd |
104 |
| 5086-H34 |
47 |
37 |
--- |
10.3 |
0.096 |
Good |
|
Yes |
|
73 |
| 5083-H112 |
42 |
21 |
--- |
10.3 |
0.096 |
Good |
|
Yes |
|
68 |
| 7075-T6 |
83 |
73 |
--- |
10.4 |
0.101 |
Poor |
|
Yes |
Anodize Reqd |
70 |
| Stainless
Steels |
|
| 304 |
82 |
35 |
--- |
28 |
0.29 |
Good |
-0.08 to -.53 |
Yes |
Crevices |
9.4 |
| 316 |
80 |
30 |
--- |
28 |
0.29 |
Good |
-0.05 to -.45 |
Yes |
Crevices |
0.94 |
| 17-4PH H1150 |
150 |
125 |
50 |
29 |
0.281 |
Good |
-0.05 to -.45 |
Yes(2) |
Crevices(2) |
10.4 |
| Mild
Steel |
|
| A36 |
58 |
36 |
5 to 20 |
30 |
0.283 |
Poor |
-0.61 |
No |
Predictable Rate |
27 |
| Non
Metals |
|
|
PVC |
N/A |
8 |
0.5 (3) |
0.000375 |
0.052 |
Excel. |
N/A |
No |
Non-Corrosive |
1 |
| Acrylic |
N/A |
9 |
0.4 (3) |
0.00045 |
0.043 |
Excel. |
N/A |
No |
Non-Corrosive |
1.4 |
| Acetal |
N/A |
8.8 |
1.5 (3) |
0.000375 |
0.05 |
Excel. |
N/A |
No |
Non-Corrosive |
1.9 |
|
Notes:
(1) To avoid accelerated corrosion care should be take to avoid electrical
coupling of these more noble materials to other less noble metals.
(2) While 17-4PH is susceptible to pitting and crevice corrosion,
unlike most other stainless steels, it can be protected galvanically.
(3) Plastic impact strengths shown are Izod, notched and in ft*lb/in.
Factors
to Consider > Relevant Material
Properties > Weight, Volume and Maximum
Depth Rating
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Housing
Design Checklist
About Subsea
Materials
Estimating the Cost
Care and Installation of
Seals
Galvanic Series
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PREVCO
Subsea Housings 11 Plaza la Prensa, Suite 1, Santa Fe,
NM 87507 877-3PREVCO (877-377-3826) Toll-Free 505-629-0800 Main 505-629-0806 Fax noleaks@prevco.com |
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