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雙相不銹鋼2205


 

雙相不銹鋼

Duplex stainless tube

· 用途:適用于原油脫鹽裝置中的熱交換器和管道;甲醇生產制作管式反應器的催化劑管束;氯乙烯生產制作預冷凝器;紙漿和造紙工業硫酸蒸煮液預熱器管束;陸上和海上油氣工業的輸送管道和集氣管;海上石油平臺的熱交換器、水處理和供水系統、消防系統、噴水系統、穩水系統;化工系統加工和運輸各種化學品的壓力容器、管道、罐和熱交換器。

· Usageheat exchanger and tube on oil desalt device, catalyst tubebank of tubular reactor for methanol manufactering, precondenser for VCM, convey pipe and header of land/ ocean oil/ gas industry; heat exchanger, water treatment and supply system, fire extinguishing system, spraying system and water stablizing system of onsea petrol platform; pressure vessel, chanels, tanks, and heat exchanger used in chemicals process and transportation in chemical industry.

· 綜合性能general characteristic

具有高的強度與韌性,綜合機械性能好High intensity and tenacity, excellent mechnical performance.

良好的抗點蝕及縫隙腐蝕能力Good resistance to corrosive pitting and crevice corrosion.

良好的抗應力腐蝕破裂能力Good resistance to stress corrosion craking.

搞得抗均勻腐蝕能力Good resistance to uniform corrosion.

導熱系數大,線膨脹系數小The material has bigger heat conductiovity, and smaller linear exppansibility.

良好的可焊性,熱裂傾向小Good welding performance, small tendency of hot cracking.

牌號對照 grade

中國China

美國US

瑞典SW

德國DE

GB/T21833鋼號

原習慣用鋼號

022Cr19Ni5Mo3Si2N

00Cr18Ni5Mo3Si2

S31500

3RE60

1.4424

022Cr22Ni5Mo3N

00Cr22Ni5Mo3N

S31803

-

1.4462

022Cr23Ni5Mo3N

00Cr22Ni5Mo3N

S32205

SAF2205

-

022Cr25Ni7Mo4N

00Cr25Ni7Mo4N

S32750

SAF2507

1.4410

主要鋼種(牌號)的化學成分和性能chemical composition and performance of main steel grade(trademark)

鋼號

Grade

化學成分chemical composition

C

Mn

P

S

Si

Ni

Cr

Mo

N

Cu

W%

022Cr19Ni5Mo3Si2N

≤0.030

1.2-2.0

≤0.030

≤0.030

1.4-2.0

4.30-

5.20

18.0-

19.0

2.50-

3.00

0.05-0.10

-

022Cr22Ni5Mo3N

≤0.030

≤2.0

≤0.030

≤0.020

≤1.0

4.50-

6.50

21.0-

23.0

2.50-

3.50

0.08-0.20

-

022Cr23Ni5Mo3N

≤0.030

≤2.0

≤0.030

≤0.020

≤1.0

4.50-

6.50

22.0-

23.0

3.00-

3.50

0.14-0.20

-

022Cr25Ni7Mo4N

≤0.030

≤1.2

≤0.035

≤0.020

≤0.8

6.00-

8.00

24.0-

26.0

3.00-

5.00

0.24-0.32

≤0.5

主要鋼種(牌號)的力學性能 Mechanical property of main gradetrademark

鋼號Grade

Rm(MPa)

Rp0.2(MPa)

A[50]%

HRC

022Cr19Ni5Mo3Si2N

≥630

≥440

≥30

≤30

022Cr22Ni5Mo3N

≥620

≥450

≥25

≤30

022Cr23Ni5Mo3N

≥655

≥485

≥25

≤30

022Cr25Ni7Mo4N

≥800

≥550

≥15

≤32

物理性能Physical property

20

100

200

300

密度density

Kg/dms

7.8

-

-

-

電阻 electric resistivity

μΩm

0.80

0.85

0.90

1.00

熱導率 thermal conductivity

W/m

15

16

17

18

比熱容 thermal capacity

J/kg

500

530

560

590

彈性模具 modulud of elasticity

GPa

200

194

186

180

柏松比 poissons ratio

0.3

線膨脹系數(溫室-Tlinear expansionroom temperature

X10-6/

13.0

13.5

14.0

金相組織 Metallographic structure

固溶狀態下的金相組織為鐵素體-奧氏體雙相,其奧氏體含量為40~60%,不允許有σ相等脆性相析出。

Duplex of ferrite-austenite under solution condition, content of austenite is 40~60%, no brittleness precipitation of σ, etc.

產品標準standardGB/T21833-2008ASTM A789/ASME SA789 ASTM A789/ASME SA790企標等and enterprise standards, etc.

產品規格size:外徑OD16~219mm;壁厚WT1~20mm

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