Alloy 230

A nickel-chromium-tungsten-molybdenum grade, Alloy 230 has outstanding oxidation resistance up to 1149 °C.

Alloy 230 has excellent long-term resistance to oxidation and thermal stability. In addition, the alloy also has good resistance to nitriding and carburising environments.

Inventory

Product form	Size range from	Size range to
Alloy 230 round bar	12.7 mm	152.4 mm
Alloy 230 sheet & plate	0.4 mm	38.1 mm

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Round Bar
Sheet & Plate

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Chemical Analysis

%	Ni	Cr	W	Mo	Co	Al	La	Mn	C	Si	Ph	S	B	Ti	Cu	Fe
Min	47	20	13	1	-	0.20	0.005	0.30	0.05	0.25	-	-	-	-	-	-
Max	65	24	15	3	5	0.50	0.005	1	0.15	0.75	0.03	0.015	0.015	0.10	0.50	3

Applications

Perfect for applications in the Power Generation industry

Alloy 230 can be used in a variety of applications including:

Transition ducts on turbine engines
Combustion linings on turbine engines
Furnace retorts
Burner flame shrouds
Vacuum heat treat fixtures
Chains and fixtures
Nitriding furnace internals
Sparger tubes and recuperative internals

About Alloy 230

Alloy 230 has outstanding oxidation resistance and superior strength up to 1149 °C. Comparable to Alloy 600, Alloy 230 exhibits excellent nitriding and carburising resistance. The alloy is one of the most nitriding-resistant materials available.

Alloy 230 has excellent creep and fatigue resistance combined with long-term stability. In addition the alloy is resistance to grain coarsening when subject to elevated temperatures for prolonged periods.

Alloy 230 is easily fabricated and welded. As a result of its good ductility, Alloy 230 is readily formed by cold working.

Properties

Density:: 8.968 g/cm³
Melting range:: 1302-1371°C

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Mechanical & Physical Properties

Mechanical & Physical Properties	21.1°C	538°C	649°C	704°C	760°C	816°C	871°C	927°C	982°C	1093°C
Ultimate Tensile Strength/MPa	841.2	703.3	6668.8	-	537.8	-	310.3	-	172.4	89.6
0.2% Yield Strength/MPa	420.6	303.4	303.4	-	324.1	-	234.4	-	124.1	68.9
Reduction of area	-	-	-	-	-	-	-	-	-	-
Elongation/%	47	54	57	-	61	-	75	-	50	37
Charpy Impact V-notch	-	-	-	-	-	-	-	-	-	-
Minimum Creep 0.0001% per hr	-	-	-	-	-	-	-	-	-	-
10,000 hr Rupture Strength(MPa)	-	-	186.2	127.6	91	57.9	38.6	22.1	7.6	-

Mechanical & Physical Properties

Mechanical & Physical Properties	21.1°C	538°C	649°C	704°C	760°C	816°C	871°C	927°C	982°C	1093°C
Ultimate Tensile Strength/MPa	841.2	703.3	6668.8	-	537.8	-	310.3	-	172.4	89.6
0.2% Yield Strength/MPa	420.6	303.4	303.4	-	324.1	-	234.4	-	124.1	68.9
Reduction of area	-	-	-	-	-	-	-	-	-	-
Elongation/%	47	54	57	-	61	-	75	-	50	37
Charpy Impact V-notch	-	-	-	-	-	-	-	-	-	-
Minimum Creep 0.0001% per hr	-	-	-	-	-	-	-	-	-	-
10,000 hr Rupture Strength(MPa)	-	-	186.2	127.6	91	57.9	38.6	22.1	7.6	-

Specifications

UNS Number:: N06230
Werkstoff Number:: 2.4733
Standards:: ASTM B435, B564, B572, B619, B622, B626, B366, AMS 5878, 5981

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