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；氯乙烯生產制作與冷凝器；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。
· Usage：heat 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.
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.
中國China | 美國US | 瑞典SW | 德國DE | |
GB/T21833鋼號 | 原習慣用鋼號 | |||
022Cr19Ni5Mo3Si2N | 00Cr18Ni5Mo3Si2N | S31500 | 3RE60 | 1.4424 |
022Cr22Ni5Mo3N | 00Cr22Ni5Mo3N | S31803 | - | 1.4462 |
022Cr23Ni5Mo3N | 00Cr22Ni5Mo3N | S32205 | SAF2205 | - |
022Cr25Ni7Mo4N | 00Cr25Ni7Mo4N | S32750 | SAF2507 | 1.4410 |
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 grade（trademark）
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-T）linear expansion（room temperature） | X10-6/℃ | 13.0 | 13.5 | 14.0 |
Duplex of ferrite-austenite under solution condition, content of austenite is 40~60%, no brittleness precipitation of σ, etc.
產品標準standard：GB/T21833-2008，ASTM A789/ASME SA789， ASTM A789/ASME SA790企標等and enterprise standards, etc.
產品規格size：外徑OD：16~219mm；壁厚WT：1~20mm
