Carpenter Custom 455® Stainless Steel, Condition H950 (Age Hardened 510°C)

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Carpenter Custom 455® Stainless Steel, Condition H950 (Age Hardened 510°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
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Physical Properties	Metric	English	Comments

Density	7.76 g/cc	0.280 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	459	459	Estimated from Rockwell C for Brinell test with 3000 kg load, 10 mm ball.
Hardness, Knoop	504	504	Estimated from Rockwell C
Hardness, Rockwell C	48	48
Hardness, Vickers	482	482	Estimated from Rockwell C
Tensile Strength, Ultimate	1586 MPa	230000 psi
	896 MPa @Temperature 538 °C	130000 psi @Temperature 1000 °F
	1207 MPa @Temperature 427 °C	175100 psi @Temperature 801 °F
	1345 MPa @Temperature 316 °C	195100 psi @Temperature 601 °F
	1689 MPa @Temperature -73.0 °C	245000 psi @Temperature -99.4 °F
	1931 MPa @Temperature -184 °C	280100 psi @Temperature -299 °F
Tensile Strength, Yield	1517 MPa @Strain 0.2 %	220000 psi @Strain 0.2 %
	758 MPa @Strain 0.2 %, Temperature 538 °C	110000 psi @Strain 0.2 %, Temperature 1000 °F
	1124 MPa @Strain 0.2 %, Temperature 427 °C	163000 psi @Strain 0.2 %, Temperature 801 °F
	1276 MPa @Strain 0.2 %, Temperature 316 °C	185100 psi @Strain 0.2 %, Temperature 601 °F
Elongation at Break	12 %	12 %	In 4D
	5.0 % @Temperature -184 °C	5.0 % @Temperature -299 °F
	11 % @Temperature -73.0 °C	11 % @Temperature -99.4 °F
	12 % @Temperature 316 °C	12 % @Temperature 601 °F	In 4D
	14 % @Temperature 427 °C	14 % @Temperature 801 °F	In 4D
	18 % @Temperature 538 °C	18 % @Temperature 1000 °F	In 4D
Reduction of Area	50 %	50 %
	20 % @Temperature -184 °C	20 % @Temperature -299 °F
	45 % @Temperature -73.0 °C	45 % @Temperature -99.4 °F
	50 % @Temperature 316 °C	50 % @Temperature 601 °F
	60 % @Temperature 427 °C	60 % @Temperature 801 °F
	70 % @Temperature 538 °C	70 % @Temperature 1000 °F
Modulus of Elasticity	200 GPa @Temperature 23.0 °C	29000 ksi @Temperature 73.4 °F
Notched Tensile Strength	793 MPa	115000 psi
	1931 MPa	280100 psi
	2068 MPa	299900 psi
Poissons Ratio	0.30 @Temperature 23.0 °C	0.30 @Temperature 73.4 °F
Fatigue Strength	680 MPa @# of Cycles 1.00e+7	98600 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	20.0 J	14.8 ft-lb	V-Notch
	4.00 J @Temperature -184 °C	2.95 ft-lb @Temperature -299 °F	V-Notch
	14.0 J @Temperature -73.0 °C	10.3 ft-lb @Temperature -99.4 °F	V-Notch

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000758 ohm-cm @Temperature 23.0 °C	0.0000758 ohm-cm @Temperature 73.4 °F

Thermal Properties	Metric	English	Comments
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 Properties	Metric	English	Comments
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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NCAR77 / 15643

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