AISI 8822 Steel, normalized, machined to 13.7 mm rounds, pseudocarburized, 775°C (1430°F) reheat, 150°C (300°F) temper

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AISI 8822 Steel, normalized, machined to 13.7 mm rounds, pseudocarburized, 775°C (1430°F) reheat, 150°C (300°F) temper
Categories:	Metal; Ferrous Metal; Alloy Steel; AISI 8000 Series Steel; Low Alloy Steel; Carbon Steel; Low Carbon Steel
Material Notes:	Normalized at 925°C in 32 mm rounds, machined to 13.7 mm rounds, 925°C pseudocarburized for 8 hours, box cooled to room temperature, 775°C reheat, oil quench, 150°C temper, tested in 12.8 mm rounds
Key Words:	B.S. 805 A 20, UNS G88220, ASTM A322, ASTM A331, ASTM A519, SAE J404, SAE J770, DIN 1.6543
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Physical Properties	Metric	English	Comments

Density	7.85 g/cc	0.284 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	352	352
Hardness, Knoop	381	381	Converted from Brinell
Hardness, Rockwell B	99	99	Converted from Brinell
Hardness, Rockwell C	39	39	Converted from Brinell hardness value.
Hardness, Vickers	372	372	Converted from Brinell hardness value.
Tensile Strength, Ultimate	1198 MPa	173800 psi
Tensile Strength, Yield	693 MPa @Strain 0.2 %	101000 psi @Strain 0.2 %
Elongation at Break	11.3 %	11.3 %	in 50 mm
Modulus of Elasticity	200 GPa	29000 ksi	Typical for steel
Bulk Modulus	160 GPa	23200 ksi	Typical for steel.
Poissons Ratio	0.29	0.29	Calculated
Machinability	55 %	55 %	hot rolled and cold drawn. Based on 100% machinability for AISI 1212 steel.
Shear Modulus	80.0 GPa	11600 ksi	Typical for steel

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000174 ohm-cm	0.0000174 ohm-cm	Estimated

Thermal Properties	Metric	English	Comments
CTE, linear	11.5 µm/m-°C @Temperature 20.0 °C	6.39 µin/in-°F @Temperature 68.0 °F	Estimated
	12.2 µm/m-°C @Temperature 250 °C	6.78 µin/in-°F @Temperature 482 °F	Estimated
	13.9 µm/m-°C @Temperature 500 °C	7.72 µin/in-°F @Temperature 932 °F	Estimated
	14.7 µm/m-°C @Temperature 1000 °C	8.17 µin/in-°F @Temperature 1830 °F	Estimated
Specific Heat Capacity	0.472 J/g-°C	0.113 BTU/lb-°F	Estimated
Thermal Conductivity	51.9 W/m-K	360 BTU-in/hr-ft²-°F	Typical steel

Component Elements Properties	Metric	English	Comments
Carbon, C	0.20 - 0.25 %	0.20 - 0.25 %
Chromium, Cr	0.40 - 0.60 %	0.40 - 0.60 %
Iron, Fe	96.675 - 97.8 %	96.675 - 97.8 %	As remainder
Manganese, Mn	0.75 - 1.0 %	0.75 - 1.0 %
Molybdenum, Mo	0.30 - 0.40 %	0.30 - 0.40 %
Nickel, Ni	0.40 - 0.70 %	0.40 - 0.70 %
Phosphorus, P	<= 0.035 %	<= 0.035 %
Silicon, Si	0.15 - 0.30 %	0.15 - 0.30 %
Sulfur, S	<= 0.040 %	<= 0.040 %

References for this datasheet.

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M882AE / 8616

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