Product Description
Nickel Alloy SB446 UNS N06625 Alloy625 Seamless Steel Pipes And Tubes
The alloy 625 tubes, which are widely used for superheater or heat exchanger tubing, are generally manufactured as per ASTM B444 (ASME SB-444) UNS N06625. It is a typical nickel-chromium-molybdenum-columbium alloy, which is commercially known as a proprietary brand of “Inconel alloy 625“. The cold-worked alloy 625 seamless tubes may be furnished in two grades of different heat-treated conditions: Grade 1 (annealed) – tubes are normally employed in service temperatures up to 1100°F (593°C); Grade 2 (solution annealed) – material is normally employed in service temperatures above 1100°F (593°C) when resistance to creep and rupture is required. Generally, unless otherwise specified, Grade 1 will be supplied.
The cold-drawn alloy 625 tubes can be furnished with ground bright surfaces or pickled matte surfaces depending on the requirements of clients. Especially, small-diameter and light-wall tubes of UNS N06625 are widely used for heat exchanger or instrumentation tubing. The “small-diameter” refers to outside diameters 1-1/4″ (31.8 mm) and under, while “light-wall” refers to a tube with specified wall thickness 3% or less of the specified outside diameter.
Features: Alloy 825 has excellent resistance to chloride-ion-induced stress corrosion cracking, reducing environments containing phosphoric and sulfuric acids, oxidizing environments containing nitric acid and nitrates, and pitting, crevice corrosion and intergranular corrosion. It has good mechanical properties at cryogenic temperatures to moderately high temperatures up to 538℃.
Applications: Chemical process industry, acid production, pickling equipment, pollution control equipment.
| Grade |
Alloy 825 / N08825 ,Alloy C276 / N10276 ,Alloy 625 / N06625 , Alloy 600 / N06600 ,Alloy 601 / N06601 , Alloy 718 / N07718 , Alloy 800 / N08000 , Alloy 400 / N04400,etc |
|
Standard
|
ASTM B622; ASTM B516; ASTM B444; ASTM B829, etc |
| Size |
OD :3.18mm-101.6mm |
| WT : 0.5mm-20mm |
| Length : According to customer needs up to 20m |
Alloy 825 Chemical composition
| % |
Ni |
Fe |
Cr |
C |
Mn |
Si |
S |
Mo |
Cu |
Ti |
Al |
| min |
38.0 |
22.0 |
19.5 |
|
|
|
|
2.5 |
1.5 |
0.60 |
|
| max |
46.0 |
|
23.5 |
0.05 |
1.00 |
0.50 |
0.030 |
3.5 |
3.0 |
1.20 |
0.20 |
Alloy 825 Physical properties
| Density |
8.14 g/cm3 |
| Melting range |
1370-1400℃ |
About MTSCO:
Who MTSCO is?
MTSCO established in 2006, during many years’ development, now becomes a large and professional industrial piping system provider, serving customers from more than 100 countries and regions.
What products can MTSCO provide?
What materials can MTSCO provide?
Austenitic: 304/L/H/N,316/L/H/N/Ti,321/H,309/H,310S,347/H,317/L904L
Duplex steel: 31803,32205,32750,32760
Nickel Alloy:
UNS N10001, N10665, N10675, N06455, N06022, N10276, N06200, N06035, N06030, N06635, N10003, N06002, R30188, N06230, R30556
UNS N06600, N06601, N06617, N06625, N07718, N07750, N08800, N08810, N08811, N08825, N09925, N08926
UNS N04400, N05500
Precipitation-hardening Steels: 254SMO/S31254, 17-4PH, 17-7PH, 15-7PH
Nickel: N4/UNS N02201, N6/UNS N02200
How can MTSCO service customers?
MTSCO's ISO9001 Quality System is issued by TUV. Our full and professional inspection reports contain two parts, one is self-inspection of the requirements beyond ISO9001, which is 100% inspected by our own QC; another is 100% inspected by professional QC teams.
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