| 材料等级： | Incoloy 800(1.4876)、 Incoloy 800H(1.4876)、 Incoloy 800HT(1.4876)、 Incoloy 825(2.4858) | 标准： | ASTM B163， ASTM B515， ASTM B407， ASTM B514 |
|---|---|---|---|
| 无损检测： | 涡流试验，水压试验， | 包装 | 木箱 |
| 强光 | 镍合金管， 铬镍铁合金管 | ||
Incoloy Alloy 825 ， Nickel Alloy Pipe ASTM B 163 / ASTM B 704， 100% ET AND HT
Incoloy Alloy 825
Common Trade Names: Incoloy 825， Alloy 825， Nickelvac 825， Nicrofer 4241.
INCOLOY alloy 825 (UNS N08825， W.Nr. 2.4858) is a nickel-iron-chromium alloy with additions of molybdenum， copper， and titanium. The nickel content is sufficient for
resistance to chloride-ion stress-corrosion cracking. The nickel， in conjunction with the molybdenum and
copper， also gives outstanding resistance to reducing environments such as those containing sulfuric and
phosphoric acids. The molybdenum also aids resistance to pitting and crevice corrosion. The alloy’s
chromium content confers resistance to a variety of oxidizing substances such as nitric acid， nitrates and
oxidizing salt. The titanium addition serves， with an appropriate heat treatment， to stabilize the alloy against
sensitization to intergranular corrosion.
规格
INCOLOY Alloy 825 is designated as UNS N08825 and Werkstoff Number 2.4858. It is listed in NACE
MR0175 for oil and gas service.
Rod， Bar， Wire and Forging Stock: BS 3076NA16， ASTM B 425， ASTM B 564， ASME SB 425， ASME
SB 564， ASME Code Case N-572， DIN 17752， DIN 17753， DIN 17754， VdTÜV 432， ISO 9723， ISO 9724，
ISO 9725.
Plate， Sheet and Strip: BS 3072NA16， BS 3073NA16， ASTM B 424， ASTM B 906， ASME SB 424， ASME
SB 906， DIN 17750， VdTÜV 432， ISO 6208.
Pipe and Tube: BS 3074NA16， ASTM B 163， ASTM B 423， ASTM B 704， ASTM B 705， ASTM B 751，
ASTM B 775， ASTM B 829， ASME SB 163， ASME SB 423， ASME SB 704， ASME SB 705， ASME SB 751，
ASME SB 775， ASME SB 829， ASME Code Case 1936， DIN 17751， VdTÜV 432， ISO 6207.
Others: ASTM B 366， ASME SB 366， DIN 17744
化学成分
Nickel..........................................................................38.0-46.0
Iron...............................................................................22.0min.
铬....................................................................19.5-23.5
Molybdenum ………………………………………………………….2.5-3.5
Copper............................................................................1.5-3.0
钛...........................................................................0.6-1.2
Carbon………………………………………………………………0.05 max.
Manganese...................................................................1.0max.
硫..........................................................................0.03max。
硅...........................................................................0.5max。
Aluminum…………………………………………………………….0.2 max.
INCOLOY 825 无缝钢管 产品范围 -Seamless tubes 6 mm OD x 0.7 mm to 50.8 mm OD x 3 mm thk. 完成条件 冷拔固溶退火和酸洗/冷拔光亮退火/NACE MRO 175 |
Incoloy alloy 825 是一种添加了铜、钼和钛的镍-铁-铬合金。该合金的化学成分旨在提供对多种腐蚀环境的优异耐受性。镍含量足以抵抗氯离子应力腐蚀开裂。镍与钼和铜的结合，还能在含有硫酸和磷酸的还原性环境中提供出色的耐腐蚀性。钼还能增强抗点蚀和缝隙腐蚀的能力。合金中的铬元素还能抵抗硝酸盐、硝酸和氧化盐等多种氧化性物质的腐蚀。添加钛后，经过适当的热处理，可使合金稳定，防止晶间腐蚀。Incoloy 825 在各种条件下都能抵抗一般腐蚀和局部腐蚀，因此具有广泛的用途。其应用包括化学加工、污染控制、油气回收、酸生产、酸洗操作、核燃料后处理和放射性废料处理。
.The outstanding property of Incoloy 825 is its corrosion resistance. In reducing & oxidising conditions， Incoloy 825 resists general corrosion， pitting & crevice corrosion， intergranular corrosion and stress corrosion cracking. It is particularly useful in sulphuric & phosphoric acids， sulphur containing flue gases， sour gas and oil wells and sea water.
Incoloy 825 is approved for pressure vessel operating temperatures up to 525C (AS1210， AS4041)， 538C (ASME Boiler & Pressure Vessel Code， Sections I， III， VIII， IX， Cases 1936， N-188). Brittle phases may form in alloy 825 at temperatures above ~ 540C， so it is not normally used at these temperatures， where creep-rupture properties would be design factors.
Chemical Composition of Incoloy Alloy 825
表 1. Chemical composition of Incoloy Alloy 825 (ASTM B163 Heat exchanger tube)
| 要素 | % | 要素 | % |
镍 | 38.0–46.0 | 碳 | 0.05 最大值 |
铬 | 19.5–23.5 | 锰 | 1.0 最大值 |
钼 | 2.5–3.5 | 硫磺 | 0.03 最大值 |
铜 | 1.5 –3.0 | 硅 | 最大 0.5 |
钛 | 0.6–1.2 | 铝 | 0.2 最大值 |
铁 | 22.0 分钟（~33%） |
|
Incoloy Alloy 825 的拉伸性能
表 2. 典型室温拉伸性能（不用于设计。有关设计值，请查阅相关材料或产品说明书）
| 形式 |
| 条件 | 0.2% 证明应力 |
| 拉伸强度 |
| 埃隆 |
管材 | 退火 | 440 | 770 | 35 | |||
管材 | 冷拔 | 880 | 1000 | 15 |
耐腐蚀性
The outstanding property of Incoloy 825 is its corrosion resistance. In reducing & oxidising conditions， Incoloy 825 resists general corrosion， pitting & crevice corrosion， intergranular corrosion and stress corrosion cracking. It is particularly useful in sulphuric & phosphoric acids， sulphur containing flue gases， sour gas and oil wells and sea water.
Incoloy 825 can be readily hot or cold worked. Hot working should be in the range 870 1180C， finishing at 870 980C. For maximum corrosion resistance hot worked parts should be stabilise annealed before use. The alloy is easier to cold form than stainless steels.
热处理
Incoloy 825 is stabilise annealed at 940C. The softest structure is obtained at 980C. Sections heavier than sheet， strip and wire should be quenched to avoid sensitisation.
应用
Incoloy 825 是温度高达约 550C (1020F) 的各种应用中的首选材料。
- 化学加工
- 核燃料后处理
- 制酸
- 酸洗设备
