强光 | 超级复式, 双相钢管 |
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ASTM A928 Supler Duplex Welded Pipe High Strength ASTM A999
Key Features :
- UNS S32750 has excellent corrosion resistance in a wide variety of corrosive chemicals
- 在海水和其他含氯化物的环境中具有出色的抗点蚀和缝隙腐蚀性能,临界点蚀温度超过 50°C
- 强度高于奥氏体不锈钢和 22%Cr 双相不锈钢
- 在环境温度和零度以下的温度下都具有出色的延展性和冲击强度
- High resistance to abrasion, erosion and cavitation erosion
- Excellent resistance to stress corrosion cracking in chloride containing environments
- UNS S32750 is listed in NACE MR 01 75 for sour service
- ASME Approval for Pressure Vessel application
可用性
Bar, forgings, sheet, plate, pipe, tube, closed die forgings,
flanges and welding consumables.
MATERIAL SPECIFICATIONS
UNS S32750 in various ASTM product form
specifications
EN 10088-3 1.4410 (Grade X2CrNiMoN25-7-4)
NORSOK MDS D51 to D55 D57 & D58
ASTM A182 F53
NACE MR01-75 (latest revision) / ISO 15156
- Alloy 32750 to MLA-MPS-47V-BAR/FORG
- ASTM A473 UNS S32750 锻件
- ASTM A182 Grade F53 UNS S32750 Forged Flanges
- ASTM A240 UNS S32750 Sheet and Plate
- ASTM A479 UNS S32750 酒吧
- NACE MR 01-75
- EN 10088-3 1.4410
- NORSOK
|
要素 | C | Cr | 铜 | 铁 | 莫 | 锰 | N | 倪 | P | S | Si | W |
最低 | 24.0 | 剩余 | 3.00 | 0.24 | 6.00 | 0.20 | 0.50 | |||||
最大 | 0.030 | 26 | 0.50 |
|
0.2% 试验应力(牛顿/毫米2 ) [ksi] 最小值 | 550[79.8] |
极限拉伸强度(牛顿/毫米2) [ksi] 最小值 | 800 [116] |
最小延伸率(%) | 25 |
硬度(HBN) | 270 max |
Reduction of Cross Section Area (%) | 45 |
环境温度下的夏比 V 型缺口冲击力(J)[英尺磅] | 80 分钟 [59 分钟] |
-46°C时的夏比V型缺口冲击力(焦耳)[英尺磅] | 45分,35分钟 [33分,25.8分钟] |
附加测试 | |
ASTM G48A Corrosion test at 40°C | No pitting and weight loss <4.0g/m2 |
超声波测试 | 根据 ASTM A388 |
铁氧体含量 | 35%-55% |
微观结构 |
|
化学加工业: |
Due to its high corrosion resistance UNS S32750 is ideal for use in Nitric Acid Processes, Polypropylene Production, PVC Production, Dioxide, Caustic Evaporators, Equipment. |
Handling Organic and Fatty Acids. |
海洋工业和造船业: |
螺旋桨和轴、方向舵、轴密封件、泵、螺栓和紧固件、阀门、仪器仪表、油轮和化学品船 |
石油和天然气工业: |
泵,阀门,管道,容器,井口设备,海底设备 |
污染控制: |
风机和泵、湿式洗涤器、焚化炉 |
纸浆和造纸工业: |
黑液加热器管、消化器吹气阀、旋转进料阀、I.D.风机、褐浆洗涤器、沉淀器、漂白组件 |
食品工业: |
甘蔗离心机、玉米和蔬菜加工厂 |
农用化学品: |
化肥生产(湿法磷酸) |
土木工程: |
污水处理 |
|
Alloy Comparisons | S31803 | S17400 (17-4PH) | 718 | S31254 | Alloy 32750 |
0.2% Proof Strength (N/mm2), minimum | 450 | 1070 | 550 | 300 | 550 |
Corrosion Rate (mm.y-1) Seawater | <0.01 | ~1 | <0.01 | <0.01 | <0.01 |
Corrosion Rate (mm.y-1) 10% sulphuric acid at 80°C | <0.4 | 10 | >1 | 1.5 | <0.15 |
Corrosion Rate (mm.y-1) Boiling 50% nitric acid | <0.15 | <0.15 | <0.15 | 0.4 | <0.15 |
Wear Properties related to Hardness (HBN) | RC25 | RC38 | RC20 | RC20 | RC28 |