SEA-CURE® Vibration Resistance
Minimum Walls for Various Condenser Candidates for Similar Support Spacing
| ALLOY | MODULUS |
WALL |
| Admiralty | 16 x 10⁶ PSI | .049” |
| 90/10 Cu/Ni | 18.0 | .043″ |
| 70/30 Cu/Ni | 22.0 | .034″ |
| Type 439 | 29.0 | .025″ |
| Type 304 / Type 316 | 28.3 | .026″ |
| N08367 | 28.2 | .027″ |
| SEA-CURE® / S44660 | 31.5 | .023″ |
| Ti Grade 2 | 14.9 | .053″ |
Coit
L = 9.5 [(E I) / p v2 D)] ¼
I = Pi / 64 (D4 – ID4)
Where:
L = Span Where Vibration Initiates
E = Modulus of Elasticity (psi)
I = Moment of Inertia (in4)
p = Turbine Exhaust Density (lb/ft3)
v = Average Exhaust Steam Velocity at Condenser Inlet
D = Tube Outside Diameter
ID = Tube Inside Diameter
SEA-CURE® – Tantamount to Titanium
