Alloy 400 has excellent resistance to corrosion by many reducing media such as sulfuric and hydrochloric acids. It is generally more resistant to corrosion by oxidizing media than higher copper alloys. Alloy 400 resists pitting and stress corrosion cracking in most fresh and industrial waters.
Send InquiryASTM B725 Alloy 400 / UNS N04400 Nickel Alloy Welded Tube / Pipe
Alloy 400 has excellent resistance to corrosion by many reducing media such as sulfuric and hydrochloric acids. It is generally more resistant to corrosion by oxidizing media than higher copper alloys. Alloy 400 resists pitting and stress corrosion cracking in most fresh and industrial waters. It has good resistance in flowing seawater, but under stagnant conditions, pitting and crevice corrosion is induced. Alloy 400 is probably the most resistant to hydrofluoric acid in all concentrations up to the boiling point, of all engineering alloys. Alloy 400 is notable for its toughness, it does not show embrittlement tendency at cryogenic temperatures. It is work hardenable.
1. Material Grade: Alloy 400/N04400, Alloy C276/N10276,Alloy B/UNS N10001, Alloy B-2/UNS N10665, Alloy 800/N08800,Alloy 825/N08825; etc
2. Outer Diameter: 3.18mm-101.6mm/10.3-426mm
Wall Thickness: 0.5mm-20mm/1.24-40.49mm
3. Length: Normally fixed length 6m, can as per customer's requirement
4. Standard: ASTM B725; ASTM B167; ASTM B444; ASTM B622 etc
Alloy 400 Chemical composition:
% | Ni | Cu | Fe | C | Mn | Si | S |
min | 63.0 | 28.0 | - | - | - | - | - |
max | - | 34.0 | 2.5 | 0.30 | 2.00 | 0.50 | 0.024 |
Manufacturing Experience
Plant Area
Max Diameter of Welded Pipe
Annealing Furnace Length
Nickel Alloy
NI-MO: N10001,N10665,N10675...
NI-CR-MO: N10276,N06022,N06035,N06455,N06002...
NI-CR-MO-CU: N06030,N06200,N08031,N08825,N08020...
NICR-MO-W: N06230...
NICKEL: N02200,N02201...
NI-CU: N04400,N05500...
NI-CR-FE: N06600,N06601,N06690,N08800,N08810,N08811...
NI-CR-MO-NB: N06625,N07718...
Austenitic
304/L/H/N, 316/L/H/N/Ti, 321/H, 309/H, 310S, 347/H, 317/L, 904L...
Duplex Steel
31803, 32205, 32750, 32760...
Cobalt Alloy
Alloy 188/ UNS R30188, Alloy L-605/ UNS R30605, Alloy S-816, Alloy 6B, UMCo50, FSX-414, MP-159...
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