| 标准： | ASTM A790， ASTM A928 | 材料等级： | UNS S32750 |
|---|---|---|---|
| O.D.： | 1/8"，1/4"，3/8"，1/2"，3/4"，1"，1 1/4"，1 1/2"， 2"， 2 1/2" 3"， 3 1/2"， 4"， 5"， 6"， 8"， 10"， 12"， 14"， 16"， 18"， 20"， 22".24" | W.T.： | SCH 5S， SCH 10， SCH 10S，SCH 20， SCH 30， STD， SCH 40， SCH 40S， SCH 60， XS，SCH 80， SCH 80S， SCH100，SCH 120， SCH 160 ， XXS |
| 类型 | 无缝，焊接 | 无损检测： | ET， HT， RT， PT |
| 申请： | Chemical Processing， Transport And Storage. Oil And Gas Exploration And Offshore Rigs. Oil And Gas Refining. Marine Environments. Pollution Control Equipment. Pulp And Paper Manufacturing Chemical Process Plant | ||
| 强光 | astm a790 super duplex pipe， a928 super duplex stainless steel pipe， uns s32750 super duplex stainless steel pipe | ||
Super Duplex Stainless Steel ASTM A790 & ASTM A928 UNS S32750 WELDED AND
S32750 Super Duplex Pipe have enhanced pitting and crevice corrosion resistance when compared with 300-series austenitic stainless steel or conventional duplex alloys. This can be attributed to the enhanced levels of chromium， molybdenum and nitrogen found in these materials. Alloy 2507 is the most common “super” duplex grade.
UNS 31803 (F51)、UNS 32205 (F60) 合金 2205、UNS S32550 (F61)、UNS S 32750 (F53)、合金 2507 和 UNS 32760 (F55)
标准：ASTM/ASME A789/SA789， A790/SA790，A450，A530
材料：UNS S31803(Cr22Ni5Mo3/1.4462)/2205，UNS S32750(1.4410)，UNS S31500(Cr18NiMo3Si2)，。
uns32760(1.4501)
Usage of Duplex 2507 Pipe S32750 Stainless Steel:
It should be limited to applications below 6000 F (3160 C). Extended elevated temperature exposure can reduce both the toughness and corrosion resistance of alloy 2507.The high chromium， molybdenum， and nitrogen levels provide excellent resistance to pitting， crevice， and general corrosion. The duplex structure provides 2507 with exceptional resistance to chloride stress corrosion cracking.
S32750 Super Duplex Pipe possesses excellent mechanical properties. Often a light gauge of S32750 Stainless Steel can be used to achieve the same design strength of a thicker nickel alloy. The resulting saving in weight can reduce the overall cost of fabrication.
化学成分
| 等级 | C 最大 | Si 最大 | 锰 最大 | P 最大 | S 最大 | Cr | 倪 | 莫 | N |
| UNS S32750 | 0.030 | 0.8 | 1.2 | 0.030 | 0.015 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 |
| UNS S31803 | 0.030 | 1.0 | 2.0 | 0.020 | 0.020 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 |
| UNS S31500 | 0.030 | 1.0 | 1.2-2.0 | 0.030 | 0.030 | 18.0-19.0 | 4.5-5.5 | 2.5-3.5 | 0.05-0.10 |
物理特性
| 等级 | Y.S.MPa min | T.S.Mpa min | 伸长 % | 硬度 HRC |
| UNS S32750 | 550 | 800 | 15 | 20 |
| UNS S31803 | 450 | 620 | 25 | 20 |
| UNS S31500 | 440 | 630 | 30 | 20 |
双相不锈钢管应用：
化学加工，运输和储存。
石油和天然气勘探及海上钻井平台。
石油和天然气提炼。
海洋环境。
污染控制设备。
纸浆和纸张制造
化学加工厂
