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SEA-CURE® stainless steel is a super ferritic
alloy designed for high resistance to chloride corrosion, especially in seawater.
Commercially introduced in 1979,
SEA-CURE® stainless has been a success story, with more than
65,000,000 feet (~20,000,000meters) of the alloy operating in various applications
around the world. These include seawater cooled steam condensers, feedwater heaters,
chemical heat exchangers and medical devices. During the past twenty years the composition
was refined to produce today’s high performance alloy.
SEA-CURE® stainless
is unique in the stainless steel family because of this excellent chloride pitting
and crevice corrosion resistance, exceptionally high strength, low work hardening
rate, extremely high modulus of elasticity and exceptional resistance to stress
corrosion cracking. The combination of high elasticmodulus and high strength allows
the use of thinner cross section tubing without vibration.
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SEA-CURE® stainless
is a patented alloy made exclusively by Plymouth Tube Company. It’s composition
is given in Table 1. Plymouth manufactures tubing in sizes from 1/2 to 2-1/2 inches
(12 – 65 mm) in diameter, and in continuous lengths up to 150 feet (45 m). To produce
feedwater heater tubing Plymouth has state-of-the-art U-bending and stress relieving
equipment. Such tubing is used in fossil, nuclear, geothermal and hydroelectric
power stations throughtout the world.
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Element |
Weight Percent |
Element |
Weight Percent |
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Chromium |
25.0 - 28.0 |
Sulfur |
0.030 max |
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Molybdenum |
3.0 - 3.5 |
Carbon |
0.030 max |
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Nickel |
1.0 - 3.5 |
Nitrogen |
0.040 max |
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Manganese |
1.0 max |
Titanium +
Niobium |
0.20 - 1.00 |
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Silicon |
1.0 max |
Iron |
Balance |
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Phosphorus |
0.040 max |
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Please
feel free to
contact us if you have any further questions. |
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SEA-CURE® is a registered Trademark of Plymouth Tube Company.
SEA-CURE® tubing is manufactured
and tested to the requirements and tolerances of ASTM A-268, A-803, ASME SA-268
and SA-803 and U.S. Patents 4,119, 765 and 4,942,922.
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