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BA Finish Duplex 2507 Stainless Steel Sheet for Desalination Plant Evaporators with High Pitting Resistance
| Place of Origin | China |
|---|---|
| Brand Name | TISCO, ZPSS,BAOSTEEL,LISCO,JISCO |
| Certification | SGS,ISO,CE,BIS |
| Model Number | 200 SERIES, 300 SERIES,400 SERIES, 904l,2205,2507 etc. |
| Minimum Order Quantity | 1 TON |
| Packaging Details | Export sea worthy packing with wooden pallet and well tied and protected, Or as to clients' requirements. |
| Delivery Time | 3~10 DAYS, Most of sizes are in stock |
| Payment Terms | L/C,T/T,Western Union |
| Supply Ability | 2000Tons /Month |
Product Details
| Standard | ASTM A240/240M ; ASME SA-240/SA-240M; JIS G4305; DIN/BS/NF EN10028-7 ; ISO;GB/T 3280-2015 | Edge | Mill Edge; Cut Edge |
|---|---|---|---|
| Samples | Free To Supply | Width*Length | 1000*2000;1219*2438;1219*3048; 1250*3000;1500*3000;1524*3048mm Or Per Customized |
| Surface | NO.1,2B,BA,8K,No.4,HL,SB,Embossed,Checkered, Etc.. | Product Name | BA Finish Duplex 2507 Stainless Steel Sheet For Desalination Plant Evaporators |
| Technique | Cold Rolled Or Hot Rolled | Thickness | Cold Rolled: 0.3mm~6mm; Hot Rolled: 3mm~60mm |
| Grade | 2507,2205,201,304, 304L 316, 316L ,430, 410, 420, 316Ti, 321, 301, 309,309S, 310, 310S,etc. | Trade Term | FOB,CIF,EXW,CFR,DDU,DDP,DAP |
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| Finish | Definition | |
|---|---|---|
| No.1 | Hot Rolled | |
| No. 2B | Cold-rolled , bright finish ; |
Product Description
BA Finish Duplex 2507 Stainless Steel Sheet for Desalination Plant Evaporators
Product Overview
Our BA (bright annealed) duplex 2507 sheets offer extreme pitting resistance (PREN >40) and smooth surface finish for high-temperature brine evaporators.
Problem Statement
Desalination evaporators using superaustenitic grades still suffer from crevice corrosion under scale deposits and high chloride levels.
Solution
Duplex 2507 provides PREN >40, higher thermal conductivity, and BA surface that reduces scale adhesion, dramatically extending tube sheet life.
Technical Specifications
| Parameter | Details |
|---|---|
| Grade | 2507, 2205 |
| Thickness | 0.5-4mm cold rolled |
| Finish | BA, 2B, 8K mirror |
| Standard | ASTM A240M, JIS G4305 |
Applications
Desalination evaporator tube sheets, vapor ducts, and brine heaters.
How It Works
High chromium (25%), molybdenum (4%), and nitrogen form an ultra-stable passive layer. BA finish lowers surface roughness, reducing nucleate boiling sites for scale.
Selection Guidelines
Use 2507 BA for flash chambers. For less critical stages, 2205 is acceptable. Avoid 2507 above 600°F in acidic brines.
Frequently Asked Questions
Q1: Can BA finish be polished on site?
Not recommended; factory finish is best.
Q2: What is PREN of 2507?
Typically >40.
Q3: Compatible with chlorine dosing?
Yes, far better than 316L.
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