AISI 8620H Steel, quenched from 900°C (1650°F), tempered at 540°C (1000°F), Low temp impact properties

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AISI 8620H Steel, quenched from 900°C (1650°F), tempered at 540°C (1000°F), Low temp impact properties
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: Transition temperature: -101°C (50% Brittle)
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, Knoop	303	Converted from Rockwell C hardness.
Hardness, Rockwell C	29
Hardness, Vickers	294	Converted from Rockwell C hardness.
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.
Izod Impact	31.0 J @Temperature -73.0 °C
	34.0 J @Temperature -185 °C
	34.0 J @Temperature -185 °C
	>= 45.0 J @Temperature -130 °C
	45.0 J @Temperature -130 °C
	>= 88.0 J @Temperature -73.0 °C
	>= 103 J @Temperature -18.0 °C
	>= 103 J @Temperature 38.0 °C
	103 J @Temperature -18.0 °C
	103 J @Temperature 38.0 °C

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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M862CA / 8332

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