AISI 8620H Steel, carburized, box cooled, reheated and quenched, 150°C (300°F) temper, 50 mm (2 in.) round

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AISI 8620H Steel, carburized, box cooled, reheated and quenched, 150°C (300°F) temper, 50 mm (2 in.) round
Categories:	Metal; Ferrous Metal; Alloy Steel; AISI 8000 Series Steel; Low Alloy Steel; Carbon Steel; Low Carbon Steel
Material Notes:	AISI 8620H is a common, carburizing alloy steel used for a variety of medium-strength applications including gears, camshafts, fasteners, and chains/chain pins. Flexibility in hardening treatments allow optimization of case/core properties. Specific conditions for property data below: carburized at 925°C (1700°F) for 8 hrs., cooled in RT in box, reheated to 845°C (1550°F), oil quenched, 150°C (300°F) temper. Core properties.
Key Words:	UNS H86200, AFNOR 22 NCD 2, UNI 20 NiCrMo 2, JIS SNCM 21 H, JIS SNCM 21, B.S. 805 H 20 (UK), B.S. 805 M 20 (UK), ASTM A304, SAEJ1268, DIN 1.6523, AFNOR 20 NCD 2 (France)
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Physical Properties	Original Value	Comments

Density	7.85 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	269
Hardness, Knoop	294	Converted from Brinell
Hardness, Rockwell B	99	Converted from Brinell
Hardness, Rockwell C	27	Converted from Brinell
Hardness, Vickers	284	Converted from Brinell
Tensile Strength, Ultimate	675 MPa
Tensile Strength, Yield	490 MPa
Elongation at Break	21 %	in 50 mm
Reduction of Area	54 %
Modulus of Elasticity	205 GPa	Typical for steel
Bulk Modulus	160 GPa	Typical for steel.
Poissons Ratio	0.29	Calculated
Machinability	65 %	hot rolled and cold drawn. Based on 100% machinability for AISI 1212 steel.
Shear Modulus	80.0 GPa	Typical for steel.

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000234 ohm-cm	Typical steel

Thermal Properties	Original Value	Comments
Specific Heat Capacity	0.475 J/g-°C	Typical steel
Thermal Conductivity	46.6 W/m-K	Typical steel

Component Elements Properties	Original Value	Comments
Carbon, C	0.18 - 0.23 %
Chromium, Cr	0.35 - 0.65 %
Iron, Fe	96.745 - 98.22 %	As remainder
Manganese, Mn	0.60 - 0.95 %
Molybdenum, Mo	0.15 - 0.25 %
Nickel, Ni	0.35 - 0.75 %
Phosphorus, P	<= 0.035 %
Silicon, Si	0.15 - 0.35 %
Sulfur, S	<= 0.040 %

References for this datasheet.

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M862BW / 8328

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