 |
| 원래 장소: | 중국 |
| 브랜드 이름: | YUHONG |
| 인증: | ISO, TUV, PED etc. |
| 모델 번호: | A789 S32750(EN 1.4410, SAF 2507) |
| 최소 주문 수량: | 1PC |
|---|---|
| 가격: | 협상 가능 |
| 포장 세부 사항: | 플라스틱 캡과 함께 나무로 되는 케이스 /Iron Case/ 뭉치 |
| 배달 시간: | 수량에 따라 다름 |
| 지불 조건: | 보자마자 T/T, L/C |
| 공급 능력: | 달 당 100톤 |
| 기준: | ASTM A789 / ASME SA789 | 등급: | UNS S32750 |
|---|---|---|---|
| 통상 명칭: | A789 S32750 슈퍼 듀플렉스 튜브 | 제품 유형: | 원활한 냉간 압연 스테인레스 스틸 열 교환기 및 응축기 튜브 |
| 열처리: | 용액 어닐링 | 배송조건: | 단련, 산세 및 부동태화, 밝은 단련 옵션 |
| 애플리케이션: | 열교환기, 응축기, 증발기, 해수 냉각 및 담수화 플랜트 | NDT: | 와류 시험, 수압시험 |
A789 S32750 Super Duplex Heat Exchanger Tube, Seamless And Solution Annealed, Eddy Current Test / Hydrostatic Tested
Overview
ASTM A789 S32750 (2507/1.4410) is a premium super duplex stainless steel seamless tube engineered specifically for heat exchangers, condensers and evaporators.
With a balanced 50% austenite and 50% ferrite microstructure, it features high mechanical strength, excellent chloride pitting, crevice and stress corrosion resistance, and superior thermal conductivity.
It is widely used in seawater desalination, offshore oil & gas, petrochemical, power plant and FGD systems for high-pressure, high-temperature and harsh corrosive working conditions.
Key Performance Features
Double yield strength compared to 304/316L
Outstanding resistance to chloride pitting, crevice corrosion & stress corrosion cracking
Good thermal conductivity, higher than austenitic stainless steel
Excellent erosion corrosion & fatigue resistance
Suitable for high pressure & high temperature severe service
Mechanical Properties (Solution Annealed Condition)
Tensile Strength: ≥790 MPa
Yield Strength (0.2% Proof): ≥550 MPa
Elongation: ≥15%
Hardness: ≤310 HB / ≤32 HRC
Microstructure: Balanced 50% Ferrite + 50% Austenite
Manufacturing & Heat Treatment
Process: Seamless → Hot piercing → Cold drawn / Cold rolled
Heat Treatment: Solution annealing at 1020–1100°C, water quenched
Delivery Condition: Annealed, pickled & passivated, bright annealed optional
Available Size Range
Outer Diameter: 6.0mm – 114.3mm
Wall Thickness: 1.0mm – 8.0mm
Standard Length: 6000mm / 12000mm
Custom: U-bend heat exchanger tubes available
Tolerance: Strict OD & WT tolerance per ASTM A789
Chemical Composition for A789 S32750 Super Duplex Heat Exchanger Tube
| Element | Content Limit |
|---|---|
| C | ≤0.03 |
| Mn | ≤1.20 |
| P | ≤0.035 |
| S | ≤0.020 |
| Si | ≤0.80 |
| Cr | 24.00–26.00 |
| Ni | 6.00–8.00 |
| Mo | 3.00–5.00 |
| N | 0.24–0.32 |
Key Performance Features
Application
Heat exchangers, condensers, evaporators
Seawater cooling & desalination plants
Offshore oil & gas platforms
Petrochemical, chemical processing industry
Power plant coastal cooling systems
Flue gas desulfurization (FGD) systems
담당자: Kelly Huang
전화 번호: 0086-18258796396
팩스: 0086-574-88017980
