Special Metals INCOLOY® 25-6MO Super Austenitic Stainless Steel (UNS N08926)

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Special Metals INCOLOY® 25-6MO Super Austenitic Stainless Steel (UNS N08926)
Categories:	Metal; Ferrous Metal; Stainless Steel
Material Notes:	A super-austenitic containing 6% molybedenum and offering excellent corrosion-resistance to neutral and acidic environments containing chlorides or other halides, such as what is found in air pollution control and flue gas desulfurization systems. The molybdenum and nitrogen content provide resistance to pitting and crevice corrosion, while copper enhances resistance to sulfuric acid. The alloy is especially suited for service in high-chloride environments such as brackish water, seawater, caustic chlorides and pulp mill bleach systems. Data provided by the manufacturer, Special Metals.
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Physical Properties	Metric	English	Comments

Density	8.03 g/cc	0.290 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell B	86	86
Tensile Strength	590 MPa @Temperature 538 °C	85600 psi @Temperature 1000 °F	Annealed before test
Tensile Strength, Ultimate	689 MPa	100000 psi	Annealed
Tensile Strength, Yield	331 MPa @Strain 0.2 %	48000 psi @Strain 0.2 %	Annealed
	220 MPa @Strain 0.2 %, Temperature 538 °C	31900 psi @Strain 0.2 %, Temperature 1000 °F	Annealed before test
Elongation at Break	>= 42 %	>= 42 %	in 2 in (50 mm) or 4D; Annealed
	55 % @Temperature 538 °C	55 % @Temperature 1000 °F	Annealed before test
Modulus of Elasticity	188 GPa	27300 ksi	for Hot Rolled and Annealed Plate [2100°F (1149°C)/1h/WQ]
Poissons Ratio	0.33	0.33
Shear Modulus	77.0 GPa	11200 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000800 ohm-cm	0.0000800 ohm-cm
Magnetic Permeability	1.005	1.005	at 200 Oersted (15.9 kA/m)

Thermal Properties	Metric	English	Comments
CTE, linear	15.18 µm/m-°C @Temperature 25.0 - 100 °C	8.433 µin/in-°F @Temperature 77.0 - 212 °F	Mean for Hot Rolled and Annealed Plate [2100°F (1149°C)/1h/WQ]
	16.03 µm/m-°C @Temperature 25.0 - 300 °C	8.906 µin/in-°F @Temperature 77.0 - 572 °F	Mean for Hot Rolled and Annealed Plate [2100°F (1149°C)/1h/WQ]
	16.56 µm/m-°C @Temperature 25.0 - 500 °C	9.200 µin/in-°F @Temperature 77.0 - 932 °F	Mean for Hot Rolled and Annealed Plate [2100°F (1149°C)/1h/WQ]
	17.18 µm/m-°C @Temperature 25.0 - 700 °C	9.544 µin/in-°F @Temperature 77.0 - 1290 °F	Mean for Hot Rolled and Annealed Plate [2100°F (1149°C)/1h/WQ]
Specific Heat Capacity	0.500 J/g-°C	0.120 BTU/lb-°F
Thermal Conductivity	11.5 W/m-K	79.8 BTU-in/hr-ft²-°F
Melting Point	1320 - 1400 °C	2410 - 2550 °F
Solidus	1320 °C	2410 °F
Liquidus	1400 °C	2550 °F
Maximum Service Temperature, Air	538 °C	1000 °F	typical use

Component Elements Properties	Metric	English	Comments
Carbon, C	<= 0.20 %	<= 0.20 %
Chromium, Cr	19 - 21 %	19 - 21 %
Copper, Cu	0.50 - 1.5 %	0.50 - 1.5 %
Iron, Fe	47.3 %	47.3 %	As remainder
Manganese, Mn	<= 2.0 %	<= 2.0 %
Molybdenum, Mo	6.0 - 7.0 %	6.0 - 7.0 %
Nickel, Ni	24 - 26 %	24 - 26 %
Nitrogen, N	0.15 - 0.25 %	0.15 - 0.25 %
Phosphorus, P	<= 0.030 %	<= 0.030 %
Silicon, Si	<= 0.50 %	<= 0.50 %
Sulfur, S	<= 0.010 %	<= 0.010 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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NINCO00 / 17433

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