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Elmet Technologies

Carpenter Custom 455® Stainless Steel, Condition H900 (Age Hardened 482°C)
Categories: Metal; Ferrous Metal; Stainless Steel; T 400 Series Stainless Steel
Material Notes: Data provided by Carpenter Technology Corporation.

Recognizing the need for high-strength alloys with good corrosion resistance to atmospheric environments, the Carpenter Research Laboratory developed Custom 455® stainless, a martensitic age-hardenable stainless steel. This alloy is relatively soft and formable in the annealed condition. A single-step aging treatment develops exceptionally high yield strength with good ductility and toughness. This stainless can be machined in the annealed condition, and welded in much the same manner as other precipitation hardenable stainless steels. Because of its low work-hardening rate, it can be extensively cold formed. The dimensional change during hardening is only about -0.001 in/in, which permits close-tolerance finish machining in the annealed state. Custom 455 stainless represents a significant advancement in the area of precipitation hardening stainless steels. It should be considered where simplicity of heat treatment, ease of fabrication, high strength and corrosion resistance are required in combination.

Because of the unique combination of high strength and corrosion resistance of Custom 455 stainless there are few other alloys available for consideration. Carpenter PH13-8 Mo can be considered where good transverse toughness and ductility are necessary in large sections.

Custom 455® is a registered trademark of Carpenter Technology Corporation.
Key Words: UNS S45500
Vendors: Visit metalmen for your metals needs. Products include special chemistry, tight tolerances, custom tempers, odd dimensions/forms, and small quantities. Phone 1-800-767-9494.

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Physical PropertiesMetricEnglishComments
Density 7.76 g/cc0.280 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 472472Estimated from Rockwell C for Brinell test with 3000 kg load, 10 mm ball.
Hardness, Knoop 519519Estimated from Rockwell C
Hardness, Rockwell C 4949
Hardness, Vickers 496496Estimated from Rockwell C
Tensile Strength, Ultimate 1689 MPa245000 psi
 1241 MPa
@Temperature 427 °C		180000 psi
@Temperature 801 °F
 1345 MPa
@Temperature 371 °C		195100 psi
@Temperature 700 °F
 1407 MPa
@Temperature 316 °C		204100 psi
@Temperature 601 °F
 1476 MPa
@Temperature 260 °C		214100 psi
@Temperature 500 °F
Tensile Strength, Yield 1634 MPa
@Strain 0.2 %		237000 psi
@Strain 0.2 %
 1145 MPa
@Strain 0.2 %,
Temperature 427 °C		166100 psi
@Strain 0.2 %,
Temperature 801 °F
 1241 MPa
@Strain 0.2 %,
Temperature 371 °C		180000 psi
@Strain 0.2 %,
Temperature 700 °F
 1296 MPa
@Strain 0.2 %,
Temperature 316 °C		188000 psi
@Strain 0.2 %,
Temperature 601 °F
 1372 MPa
@Strain 0.2 %,
Temperature 260 °C		199000 psi
@Strain 0.2 %,
Temperature 500 °F
Elongation at Break 11 %11 %In 4D
 10 %
@Temperature 260 °C		10 %
@Temperature 500 °F		In 4D
 12 %
@Temperature 371 °C		12 %
@Temperature 700 °F		In 4D
 14 %
@Temperature 427 °C		14 %
@Temperature 801 °F		In 4D
Reduction of Area 48 %48 %
 49 %
@Temperature 260 °C		49 %
@Temperature 500 °F
 50 %
@Temperature 316 °C		50 %
@Temperature 601 °F
 52 %
@Temperature 371 °C		52 %
@Temperature 700 °F
 56 %
@Temperature 427 °C		56 %
@Temperature 801 °F
Modulus of Elasticity 200 GPa29000 ksi
Poissons Ratio 0.30
@Temperature 23.0 °C		0.30
@Temperature 73.4 °F
Fatigue Strength 772 MPa
@# of Cycles 1.00e+7 		112000 psi
@# of Cycles 1.00e+7 		R.R. Moore Test, Smooth Rotating Beam
Shear Modulus 76.9 GPa
@Temperature 23.0 °C		11200 ksi
@Temperature 73.4 °F
Charpy Impact 12.0 J
@Diameter 25.0 mm		8.85 ft-lb
@Diameter 0.984 in		bar
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0000758 ohm-cm
@Temperature 23.0 °C		0.0000758 ohm-cm
@Temperature 73.4 °F
 
Thermal PropertiesMetricEnglishComments
CTE, linear  10.6 µm/m-°C
@Temperature 22.0 - 93.0 °C		5.89 µin/in-°F
@Temperature 71.6 - 199 °F
 11.2 µm/m-°C
@Temperature 22.0 - 260 °C		6.22 µin/in-°F
@Temperature 71.6 - 500 °F
 12.0 µm/m-°C
@Temperature 22.0 - 482 °C		6.67 µin/in-°F
@Temperature 71.6 - 900 °F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C <= 0.050 %<= 0.050 %
Chromium, Cr 11 - 12.5 %11 - 12.5 %
Copper, Cu 1.5 - 2.5 %1.5 - 2.5 %
Iron, Fe 75 %75 %as remainder
Manganese, Mn <= 0.50 %<= 0.50 %
Molybdenum, Mo <= 0.50 %<= 0.50 %
Nb + Ta 0.10 - 0.50 %0.10 - 0.50 %
Nickel, Ni 7.5 - 9.5 %7.5 - 9.5 %
Niobium, Nb (Columbium, Cb) <= 0.50 %<= 0.50 %
Phosphorus, P <= 0.040 %<= 0.040 %
Silicon, Si <= 0.50 %<= 0.50 %
Sulfur, S <= 0.030 %<= 0.030 %
Tantalum, Ta <= 0.50 %<= 0.50 %
Titanium, Ti 0.80 - 1.4 %0.80 - 1.4 %

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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NCAR72 / 15638

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