标准: | astm a789 , asme sa789 , astm a790 , asme sa790 , astm a928 , asme sa928 | 年级 | S31803 , S32750, S32760, S31254 , 254 SMO, 253MA |
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类型 | 焊接,无缝 | 外径: | 6 毫米-630 毫米或定制 |
厚度 | 0.1 毫米-60 毫米 | 完成: | Annealed, Pickled |
无损检测: | ET/UT/HT | 申请: | 工业,建筑,锅炉,石油和天然气,石油天然气污水运输 |
强光 | s32750 duplex pipe, s31803 duplex pipe, chemical process plant duplex pipe |
ASTM A790 A789 S31803 1.4462 S32750 1.4410 Super Duplex Stainless Steel Pipe For Chemical Process Plant
ASTM A790 UNS S31803, UNS S32750 and UNS S32760 are duplex steel grades, which have high chromium and molybdenum elements, ASTM A790 UNS S31803 is the most widely used duplex stainless and it has excellent corrosion resistance, and high strength feature. Generally UNS S31803 Duplex stainless steel pipe is applied in corrosion and high-temperature environment. ASTM A790 UNS S32750 and ASTM A790 UNS S32760 are super duplex steel grades. ASTM A790 UNS S32750 Super Duplex Steel Pipe is an austenitic-ferritic stainless steel. It has excellent resistance to pitting and crevice corrosion. In chemical composition, the higher chromium and molybdenum content will ensure high tensile strengths and exhibits high thermal conductivity and low thermal expansion.
规格
规格 | astm a789, astm a790, astm a928, asme sa789, asme sa790, asme sa928 |
年级 | UNS S32205, UNS S31803, UNS S32750, UNS S32760 |
类型 | 无缝/焊接/ERW/EFW/冷拔/热处理/冷处理 |
外径尺寸 | Seamless – 1/2” To 18” Welded / ERW- 1" To 48" |
壁厚 | Schedule 10 To Schedule 160 |
长度 | 6 Meters, Single Random Length, Double Random Length Or Customize Size |
Pipes Ends | 平端/斜端 |
交货条件 | 轧制,成形,消除应力,退火,淬火,回火,冷拉,光亮退火 |
涂层 | 电抛光,机械抛光,缎光,钝化 |
化学成分:
等级 | % | C | 锰 | Si | P | S | Cr | 莫 | 倪 | N |
UNS S31803 | 最小值 最大值 | 0 – 0.03 | 0 – 2.00 | 0 – 1.00 | 0 – 0.03 | 0 – 0.02 | 21.0 – 23.0 | 2.5 – 3.5 | 4.5 – 6.5 | 0.08 – 0.20 |
等级 | C≤ | Mn≤ | P≤ | S≤ | Si≤ | 倪 | Cr | 莫 | N | 铜 |
S32750 | 0.03 | 1.20 | 0.035 | 0.02 | 0.80 | 6.0-8.0 | 24.0-26.0 | 3.0-5.0 | 0.24-0.32 | 0.5 |
机械构成
等级 | 拉伸强度 (MPa) 最小值 | 屈服强度 0.2% 证明 (MPa) 最小值 | 伸长率 (%,50 毫米) 最小值 | 硬度 | |
罗克韦尔 C (HR C) | 布氏硬度 (HB) | ||||
UNS S31803 | 621 | 448 | 25 | 31 最大值 | 最大 293 |
年级 | 拉伸,最小,ksi[兆帕] | 屈服,最小,ksi[兆帕] | 延伸率, %(最小值) | 硬度,HB(最大值) |
UNS S32750 | 116 [800] | 80 [550] | 15 | 300 |
年级 | 密度(克/厘米 3) | 密度(磅/英寸 3) | 熔点(°C) | 熔点(°F) |
UNS S31803 | 7.805 | 0.285 | 1420 - 1465 | 2588 - 2669 |
UNS S32750 | 7.8 | 0.281 | 1350 | 2460 |
应用:
石油和天然气工业
Chemical Process Industry
Marine Industry and Shipbuilding
Pollution Control
纸浆和造纸工业
Food Process Industry
Agrochemicals
Civil Engineering
石化工业