AISI 8622H Steel, heat treated, machined to 25 mm (1 in.) rounds, pseudocarburized, 865°C (1590°F) reheat, 150°C (300°F) temper

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AISI 8622H Steel, heat treated, machined to 25 mm (1 in.) rounds, pseudocarburized, 865°C (1590°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:	Normalize 925°C (1700°F) in 32 mm rounds, machine to 25 mm rounds, pseudocarburize at 925°C (1700°F) for 8 hours, box cooled to room temperature, 865°C (1590°F) reheat, oil quench, 150°C (300°F) temper, tested in 12.8 mm rounds
Key Words:	UNS H86220, ASTM A304, SAE J1268, DIN 1.6543, B.S. 805 A 20
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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	388	388
Hardness, Knoop	418	418	Converted from Brinell
Hardness, Rockwell B	101	101	Converted from Brinell
Hardness, Rockwell C	43	43	Converted from Brinell
Hardness, Vickers	411	411	Converted from Brinell
Tensile Strength, Ultimate	1250 MPa	181000 psi
Tensile Strength, Yield	900 MPa @Strain 0.2 %	131000 psi @Strain 0.2 %
Elongation at Break	13.6 %	13.6 %	in 50 mm
Modulus of Elasticity	205 GPa	29700 ksi	Typical for steel
Bulk Modulus	160 GPa	23200 ksi	Typical for steel.
Poissons Ratio	0.29	0.29	Calculated
Machinability	65 %	65 %	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	0.0000234 ohm-cm	0.0000234 ohm-cm	Typical steel

Thermal Properties	Metric	English	Comments
Specific Heat Capacity	0.475 J/g-°C	0.114 BTU/lb-°F	Typical steel
Thermal Conductivity	46.6 W/m-K	323 BTU-in/hr-ft²-°F	Typical steel

Component Elements Properties	Metric	English	Comments
Carbon, C	0.19 - 0.25 %	0.19 - 0.25 %
Chromium, Cr	0.35 - 0.64 %	0.35 - 0.64 %
Iron, Fe	96.785 - 98.21 %	96.785 - 98.21 %	As remainder
Manganese, Mn	0.60 - 0.95 %	0.60 - 0.95 %
Molybdenum, Mo	0.15 - 0.25 %	0.15 - 0.25 %
Nickel, Ni	0.35 - 0.75 %	0.35 - 0.75 %
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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M862DN / 8371

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