Nickel/Cobalt Alloy Welded Tube
Austenitic / Duplex Steel / Nickel Alloy / Cobalt Alloy
Alloy 230 Features:
Alloy 230 combines excellent high temperature strength, outstanding resistance to oxidizing environments up to 1149℃ for prolonged exposure, premier resistance to nitriding environments, and excellent long term thermal stability. It has low thermal expansion than most high temperature alloys, and good resistance to grain coarsening with prolonged exposure to high temperatures.
ASTM B619 / B626 Alloy 230 / UNS N06230 Nickel Alloy Welded Tube/ Pipe
Chemical composition
| % | Ni | Cr | W | Mo | Co | Fe | C | Mn | Si | P | S | Al | La | B |
| min | balance | 20.0 | 13.0 | 1.0 | 0.05 | 0.30 | 0.25 | 0.20 | 0.005 | |||||
| max | 24.0 | 15.0 | 3.0 | 5.0 | 3.0 | 0.15 | 1.00 | 0.75 | 0.030 | 0.015 | 0.50 | 0.050 | 0.015 |
Physical properties
| Density | 8.97 g/cm3 |
| Melting range | 1301-1371℃ |
Features: Alloy 230 combines excellent high temperature strength, outstanding resistance to oxidizing environments up to 1149℃ for prolonged exposure, premier resistance to nitriding environments, and excellent long term thermal stability. It has low thermal expansion than most high temperature alloys, and good resistance to grain coarsening with prolonged exposure to high temperatures.
Applications: Gas turbine engine combustion cans, transition ducts, after-burners, flameholders and thermocouple sheaths; high temperature heat exchangers; and industrial furnace heat resistant components.
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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