Pipe & Tube for Chemical Industry
1. Austenitic Stainless Steel
Austenitic stainless steel is used widely for various usages in general corrosion environment.
Grade | Chemical Composition | Applicable Standard (ASTM/ASME) |
EN, etc. | Characteristics | Example of applications |
304 | 18Cr-8Ni | S30400 | 1.4301 | Basic stainless steel grade | General purpose for numerous applications |
304H | 18Cr-8Ni -High C |
S30409 | 1.4948 | Basic stainless steel grade | General purpose for numerous applications |
304L | 18Cr-8Ni -Low C |
S30403 | 1.4307 | Intergranular corroison resistance | General purpose for numerous applications |
304N | 18Cr-8Ni-N | S30451 | 1.4315 | High Strength | |
304LN | 18Cr-8Ni -Low C-N |
S30453 | 1.4311 | Intergranular corroison resistance, high strength | |
309H | 22Cr-12Ni | S30909 | 1.4829 | Oxidation resistance | Radiant tubes |
309S | 22Cr-12Ni | S30908 | Oxidation resistance | Radiant tubes | |
310H | 25Cr-20Ni | S31009 | 1.4842 | Oxidation resistancece | Radiant tubes, boiler heater tubes |
310S | 25Cr-20Ni | S31008 | Oxidation resistancece | Radiant tubes, boiler heater tubes | |
316 | 18Cr-12Ni -2Mo |
S31600 | 1.4401 | Corrosion resistance | LNG plant pipes, boilers and chemical industry tubes and pipes |
316H | 18Cr-12Ni -2Mo-High C |
S31609 | 1.4918 | Corrosion resistance | LNG plant pipes, boilers and chemical industry tubes and pipes |
316L | 18Cr-12Ni -2Mo-Low C |
S31603 | 1.4404 | Corrosion resistance | LNG plant pipes, boilers and chemical industry tubes and pipes |
316Ti | 18Cr-12Ni -Mo-Ti |
S31635 | 1.4571 | Intergranular corrosion resistance | |
317 | 18Cr-12Ni -3Mo |
S31700 | Pitting corrosion resistance | Chemical tanler pipes | |
317L | 18Cr-12Ni -3Mo-Low C |
S31703 | 1.4438 | Pitting corrosion resistance | Chemical tanler pipes |
NEXAGE™ 317CU |
18Cr-16Ni -3.5Mo-4Cu |
S31730 | Sulfuric and hydrochloric acid dew point corrosion resistance |
Exhaust gas pipes and heat exchanger tubes for sulfur fuel and boimass boilers | |
NEXAGE™ 317AP |
17Cr-14Ni -3Mo-0.3Nb-N |
S31740 (ASME CC3038) |
- PTA-SCC, - Naphthenic acid |
Petroleum refining plant furnace tubes | |
321 | 18Cr-9Ni -Ti |
S32100 | 1.4541 | Intergranular corrosion resistance | Chemical plant pipes |
321H | 18Cr-9Ni -Ti-High C |
S32109 | 1.4940 | High-temperature strength | Boiler heater and reheater tubes |
347 | 18Cr-9Ni -Nb |
S34700 | 1.4550 | Intergranular corrosion resistance | Chemical plant pipes and tubes |
347H | 18Cr-9Ni -Nb-High C |
S34709 | 1.4942 | High-temperature strength | Boiler heater and reheater tubes |
347AP | 18Cr-10Ni -0.3Nb -Extra low C |
S34751 |
PTA-SCC, |
Petroleum refining plant furnace tubes | |
NEXAGE™ 347AlPha |
18Cr-11Ni -3Cu-Mo -Nb-B-N -Extra low C |
S34752 (ASME CC2984) |
- PTA-SCC, |
Petroleum refining plant furnace tubes | |
YUS™270 | 20Cr-18Ni -6Mo-0.7Cu -0.2N-Low C |
S31254 | 1.4547 | High pitting corrosion resistance |
|
254SMO | 20Cr-18Ni -6Mo-Cu-N |
S31254 | 1.4547 | High pitting corrosion resistance | Seawater heat exchanger tubes |
HYDREXEL™ | 22Cr-13Ni -5Mn-2Mo -0.3N |
TPXM-19 | Hydrogen embrittlement resistance and high strength | High pressure gaseous hydrogen supply tubes for hydrogen stations |
|
HYDLIQUID™ | 22Cr-13Ni -5Mn-2Mo -0.3N-Nb-V |
TPXM-19 | Hydrogen embrittlement resistance and high cryogenic toughness |
Liquefied hydrogen, LNG plant pipes | |
310MoLN | 25Cr-22Ni -2Mo-N |
S31050 | 1.4466 | Intergranular corrosion resistance | Urea reactor tubes |
2. Ferritic, Martensitic Stainless Steel
Ferritic Stainless Steel has higher Stress Corrosion Cracking resistance than Type 304, widely used for heat exchanger tubes.
Grade | Chemical Composition |
Applicable |
EN, etc. | Characteristics | Example of applicatoins |
430 | 18Cr | S43000 | 1.4016 | Chloride corrosion and SCC resistance | Water heater pipes |
444 | 19Cr-2Mo-Ti/Nb | S44400 | 1.4521 | Chloride corrosion and SCC resistance | Water heater pipes |
YUS™190 |
19Cr-2Mo |
S44400 | 1.4521 |
- SCC resistance |
- Heat exchanger for various chemical plants |
446 | 25Cr-N | S44600 | Chloride corrosion and SCC resistance | Water heater pipes |
3. Duplex Stainless Steel
Duplex stainless steel has higher strength, corrosion resistance (pitting ) than conventional austenitic stainless steels.
Grade | Chemical Composition |
Applicable |
EN, etc. | Characteristics | Example of applications |
YUS™2120 | 21Cr-2Ni -3Mn-Cu-N |
JIS G3459 SUS821L1TP |
SCC, crevice corrosion resistance | Heat exchanger for various chemical plants | |
YUS™2351 | 23Cr-5Ni -1Mo |
JIS G3459 SUS329J1TP |
SCC, crevice corrosion resistance | Heat exchanger for various chemical plants | |
329J3L | 22Cr-5Ni -3Mo-0.15N |
S31803 | 1.4462 NORSOK M-630/M-650 |
High strength |
Various heat exchanger tubes |
DP11A | 24Cr-4Ni -Mo-Cu-N |
SCC, crevice corrosion resistance | Heat exchanger for various chemical plants | ||
329J4L | 25Cr-7Ni -3Mo-0.2N |
S31260 | High strength and high corrosion resistance |
Various heat exchanger tubes | |
S31500 | 18.5Cr-5Ni -2.7Mo |
S31500 | High strength and high corrosion resistance |
Various heat exchanger tubes | |
S32205 | 22.5Cr-6Ni -3Mo-0.2N |
S32205 | 1.4462 NORSOK M-630/M-650 |
High strength and high corrosion resistance |
Various heat exchanger tubes |
S32750 | 25Cr-7Ni -4Mo-0.3N |
S32750 | 1.4410 NORSOK M-630/M-650 |
High strength and high corrosion resistance |
Seawater desalination plant pipes |
DP12 | 25Cr-7Ni -2.7Mo-W-N |
S31260 | Urea corrosion and SCC resistance | Urea reactor tubes | |
DP3 DP3N |
25Cr-7Ni -3.3Mo-W-N |
S31260 | Pitting corrosion, seawater and crevice corrosion resistance |
Seawater heat exchanger tubes for various chemical plants | |
DP3W | 25Cr-7Ni -3.2Mo-2W-N |
S39274 ASME CC2427 |
NORSOK M-630/M-650 |
Pitting corrosion, seawater and crevice corrosion resistance |
Umbilical tubes and seawater heat exchanger tubes |
DP28W™ | 27.5Cr-7.7Ni -2.2W-Mo-N |
S32808 ASME CC2496 |
Urea corrosion and SCC resistance) | Urea reactor tubes |
4. High-Ni, Ni-based Alloy
- High-Ni alloy like Alloy 825 has higher corrosion and strength in high temperature.
- Ni-based alloy is applied to pipes and tubes for chemical plants where corrosion is particularly severe.
Grade | Chemical Composition | Applicable Standard (ASTM/ASME) |
EN, etc. | Characteristics | Example of applications |
800 | 20Cr-30Ni -Ti |
N08800 | 1.4558 | High corrosion resistance | |
800H | 20Cr-30Ni -Ti-High C |
N08810 | 1.4876 | High strength, high corrosion resistance | Chemical plant heater and reheater tubes |
904L | 20Cr-25Ni -4.5Mo-Cu |
N08904 | 1.4539 | High corrosion resistance | Various heat exchanger tubes |
28 | 27Cr-31Ni -3.5Mo-Cu |
N08028 | 1.4563 | High corrosion resistance | Various heat exchanger tubes |
20 | 20Cr-35Ni -2Mo-3Cu -Nb |
N08020 | 2.4660 | High corrosion resistance | |
825 | 20Cr-42Ni -3Mo-2Cu -Ti |
N08825 | 2.4858 | High corrosion resistance and SCC resistanece | Heat exchanger tubes fo petroleum refining |
NEXAGE™ HR24 |
25Cr-38Ni -Mo-Si |
Oxidation, carburization resistance and high temperature strength (700 to 1100 deg. C) |
Cracking tubes for ethylene plants | ||
NEXAGE™ 845 |
22.5Cr-47Ni |
N06845 (ASME CC2794) |
Pitting corrosion and acid resistance (sulfuric acid, hydrochliric acid, nitric acid, fomic acid etc.) |
Highly corrosion resistant pipes nad heat exchanger tubes for chemical industry |
|
600 | 15Cr-8Fe -Ni base |
N06600 | 2.4816 | Oxidation resistance | Thermocouple protection tubes |
601 | 23Cr-1.4Al -Ni base |
N06601 | 2.4581 | Oxidation and carburization resistance | |
625 | 22Cr-9Mo -Ni base |
N06625 | 2.4856 | High corrosion resistance and SCC resistance | |
NEXAGE™ 696 |
30Cr-60Ni -2Cu-1.5Si |
N06696 (ASME CC2652) |
Metal dusting, caburization resistance and high-temperature strength |
- Heating furnace pipes for synthetic gas plants |
|
C22 | 21Cr-13Mo -3W-Ni base |
N06022 | 2.4602 | High acid resistance | Heat exchanger tubes for chemical plants |
276 | 15.5Cr-16Mo -5Fe-Ni base |
N10276 | 2.4819 | High acid resistance | Heat exchanger tubes for chemical plants |
200 | Ni (Annealed) | N02200 | 2.4066 | High corrosion resistance | Heat exchanger tubes for caustic soda and hydrogen chloride plants |
201 | Ni-Low C | N02201 | 2.4068 | High corrosion resistance | Heat exchanger tubes for caustic soda and hydrogen chloride plants |
NEXAGE™ 201 |
Ni-Low C-Nb | N02201 | 2.4068 | High strength (Easy handling) | Heat exchanger tubes for caustic soda and hydrogen chloride plants |