Backed by overwhelming evidence of its sustainability in the power generation and heat transfer markets, SEA-CURE® is one the most sought-after products for reliability in less than desirable conditions. SEA-CURE® is designed with unique properties, enabling it to withstand harsher operating environments with minimal issues. Its specific composition reduces overall cost and mechanical failures over the long-term life of the product.
Advantages
- Lowest life cycle cost
- Superior corrosion resistance
- World-class technical assistance through the Webco TechCenter™
- Better mechanicals for retube applications
WHY SEA-CURE®
SEA-CURE® has proven its sustainability over 30 years of commercial success. When available as a choice, it outsells other super-ferritic alloys 4 to 1.
- Optimal product for condensers and evaporators in the power generation and heat transfer markets
- SEA-CURE® has an extended product life, making it a cost-effective alloy in high chloride applications where the potential for microbiological-influenced corrosion exists
- Ideal for applications using seawater and polluted waters where MIC is present
- Versatility with applications in multiple industries including oil & gas production, petrochemical, and water
- Stellar corrosion resistance providing extended sustainability
- Unlike titanium, SEA-CURE® offers reversible hydrogen embrittlement if exposed to hydrogen
- High steam and water droplet erosion resistance
- Over 145 million feet sold worldwide to date
- Chosen by the American Department of Energy for its Strategic Petroleum Reserve crude coolers
SEA-CURE® is a registered trademark of Webco.
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Chemical Composition
Chemical composition (nominal) %
C
Si
Mn
P
S
Cr
Ni
Mo
Cu
N
≤ 0.020
≤ 0.7
≤ 2.0
≤ 0.020
≤ 0.010
≤ 27
≤ 31
≤ 3.5
≤ 1.0
≤ 0.1
Corrosion Resistance
ACID SOLUTION
TEMPERATURE
TYPE 304
TYPE 316
SEA-CURE
°F
°C
Corrosion Rate-MPY*
0.1% Hydrochloric
212
100 B
17.40
2.08
0.23
1.0% Hydrochloric
210
99 B
0.68
1.0% Hydrochloric + 3% FeCI3
167
75
2.27**
10% Sulfuric
215
102 B
1.05
60% Sulfuric
244
118 B
>1000.00
93% Sulfuric
171
77
78.00
10.00
50% Phosphoric
228
109 B
2.46
3.87
1.78
10% Nitric
219
104 B
0.37
0.96
0.46
65% Nitric
241
116 B
3.34
3.95
1.20***
60% Nitric + 2% HCL
235
113 B
4.18***
80% Acetic
217
103 B
17.00
0.02
100% Acetic
243
117 B
0.39
0.54
0.44
50% Acetic + 50% Anhyd
164
73
0.40
1.60
50% Formic
221
105 B
0.89
10% Oxalic
216
102 B
1.31
55% NaOH + 8% NaC + 3% NaCIO3
210
99
6.1
<0.10
50% NaOH
289
143
15.00
1.00
* Corrosion rate in mils per year - evaluated over a 96 hour test period
** Pitting
*** Welded SEA-CURE showed good performance in the nitric tests. However, caution should be exercised in using any titanium stabilized alloy in highly oxidizing environments.
B Boiling
Comparative Properties of Various Alloys
Ti GRADE 2
90-10 Cu/Ni
SEA-CURE
Yield Strength* (ksi)
40
15
65
Tensile Strength* (ksi)
50
40
85
Hardness (RB)
60
30
95
Elongation* (%)
20
25
20
Elastic Modulus (PSI x 106)
15.5**
18
31.5
Density (lb/in3)
0.16
0.32
0.278
Expansion Coefficient (in/in-°Fx106)
4.7
9.5
5.38
Thermal Conductivity (Btu/hr-ft2-°F/ft)
12.6
26
10.1
Specific Heat (Btu/lb-°F)
0.124
0.092
0.12
Fatigue Endurance Limit (ksi)
Low
25
35
* Minimum ASTM Value
** When anisotropy is not present