Crucible Steel 422 Stainless Steel

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Crucible Steel 422 Stainless Steel
Categories:	Metal; Ferrous Metal; Martensitic; Stainless Steel; T 400 Series Stainless Steel
Material Notes:	Crucible 422 is a hardenable martensitic stainless steel which is being widely used for high temperatures up to 1200°F. It has excellent creep-rupture properties in the range of 600/1200°F and is capable of being heat treated to various high strength levels depending on section, form, and application involved. Crucible 422 offers designers in the aircraft and power industries high strength/weight ratios from room temperature to 1200°F. The composition is carefully balanced to provide a microstructure which is virtually all tempered martensite after heat treatment. This structure assures uniformity of mechanical properties with a minimum of directionality. Information provided by Crucible Specialty Metals.
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Physical Properties	Original Value	Comments

Specific Gravity	7.78 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Rockwell C	35	Double tempered; Tempering Temperature- 1350°F
	48	Tempering Temperature- 700°F
Tensile Strength, Ultimate	149000 psi	Tempering Temperature- 1200°C
	229000 psi	Tempering Temperature- 600°F
	57000 psi @Temperature 649 °C	Tempering Temperature-1200°F
	230000 psi @Temperature 316 °C	Tempering Temperature-800°F
Tensile Strength, Yield	46000 psi @Temperature 649 °C	Tempering Temperature-1200°F
	153000 psi @Temperature 316 °C	Tempering Temperature-800°F
	125000 psi @Strain 0.2 %	Tempering Temperature-1200°F
	145000 psi @Strain 0.2 %	Tempering Temperature- 600°F
Elongation at Break	16 %	in 2"; Tempering Temperature- 600°F
	19 %	in 2"; Tempering Temperature- 1200°F
	16 % @Temperature 316 °C	Tempering Temperature-800°F
	21 % @Temperature 649 °C	Tempering Temperature-1200°F
Reduction of Area	52 %	Tempering Temperature-1200°F
	56 %	Tempering Temperature- 600°F
	13 % @Temperature 316 °C	Tempering Temperature-800°F
	85 % @Temperature 649 °C	Tempering Temperature-1200°F
Modulus of Elasticity	29800 ksi
	20500 ksi @Temperature 593 °C
Poissons Ratio	0.23
	0.16 @Temperature 593 °C
Shear Modulus	9000 ksi
	12000 ksi @Temperature 23.9 °C
Charpy Impact	6.00 - 7.00 ft-lb	RT
	3.00 - 4.00 ft-lb @Temperature -73.3 °C
	32.0 - 38.0 ft-lb @Temperature 204 °C

Thermal Properties	Original Value	Comments
CTE, linear	5.90 µin/in-°F @Temperature 21.1 - 260 °C
	6.70 µin/in-°F @Temperature 21.1 - 649 °C
Specific Heat Capacity	0.110 BTU/lb-°F @Temperature 0.000 - 100 °C
Thermal Conductivity	174 BTU-in/hr-ft²-°F @Temperature 100 °C

Component Elements Properties	Original Value	Comments
Carbon, C	0.23 %
Chromium, Cr	11.5 %
Iron, Fe	>= 84.12 %	As Remainder
Manganese, Mn	0.75 %
Molybdenum, Mo	1.0 %
Nickel, Ni	0.80 %
Silicon, Si	0.35 %
Tungsten, W	1.0 %
Vanadium, V	0.25 %

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 go back to viewing the property data in MatWeb's normal format.

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NCRUC044 / 16037

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