AISI 8630H Steel, normalized

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AISI 8630H Steel, normalized
Categories:	Metal; Ferrous Metal; Alloy Steel; AISI 8000 Series Steel; Low Alloy Steel; Carbon Steel; Medium Carbon Steel
Material Notes:
Key Words:	UNS H86300, ASTM A304, SAE J1268, DIN 1.6545, UNI 30 NiCrMo 2 KB
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Physical Properties	Metric	English	Comments

Density	7.85 g/cc	0.284 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Knoop	230	230	Converted from Vickers hardness.
	266 @Temperature -79.0 °C	266 @Temperature -110 °F	Converted from Vickers hardness
	305 @Temperature -195 °C	305 @Temperature -319 °F	Converted from Vickers hardness
Hardness, Rockwell C	15	15	Converted from Vickers hardness. Value below normal HRC range, for comparison only.
	22 @Temperature -79.0 °C	22 @Temperature -110 °F	Converted from Vickers hardness
	28 @Temperature -195 °C	28 @Temperature -319 °F	Converted from Vickers hardness
Hardness, Vickers	217	217
	252 @Temperature -79.0 °C	252 @Temperature -110 °F
	289 @Temperature -195 °C	289 @Temperature -319 °F
Tensile Strength, Ultimate	620 MPa	89900 psi
	717 MPa @Temperature -79.0 °C	104000 psi @Temperature -110 °F
	1035 MPa @Temperature -195 °C	150100 psi @Temperature -319 °F
Tensile Strength, Yield	550 MPa @Strain 0.2 %	79800 psi @Strain 0.2 %
	635 MPa @Strain 0.2 %, Temperature -79.0 °C	92100 psi @Strain 0.2 %, Temperature -110 °F
	924 MPa @Strain 0.2 %, Temperature -195 °C	134000 psi @Strain 0.2 %, Temperature -319 °F
Elongation at Break	16 %	16 %	in 50 mm
	12 % @Temperature -195 °C	12 % @Temperature -319 °F	in 50 mm
	18 % @Temperature -79.0 °C	18 % @Temperature -110 °F	in 50 mm
Modulus of Elasticity	187 GPa	27100 ksi
	199 GPa @Temperature -79.0 °C	28900 ksi @Temperature -110 °F
	220 GPa @Temperature -195 °C	31900 ksi @Temperature -319 °F
Bulk Modulus	160 GPa	23200 ksi	Typical for steel.
Poissons Ratio	0.30	0.30	Calculated
Fatigue Strength	315 MPa	45700 psi	Unnotched Limit
	400 MPa @Temperature -79.0 °C	58000 psi @Temperature -110 °F	Unnotched Limit
	640 MPa @Temperature -195 °C	92800 psi @Temperature -319 °F	Unnotched Limit
Machinability	70 %	70 %	annealed and cold drawn. Based on AISI 1212 steel = 100%.
Shear Modulus	72.0 GPa	10400 ksi	Estimated from elastic modulus
	76.5 GPa @Temperature -79.0 °C	11100 ksi @Temperature -110 °F	Estimated from elastic modulus
	84.6 GPa @Temperature -195 °C	12300 ksi @Temperature -319 °F	Estimated from elastic modulus

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000234 ohm-cm	0.0000234 ohm-cm	Typical steel

Thermal Properties	Metric	English	Comments
CTE, linear	11.2 µm/m-°C @Temperature 21.0 - 100 °C	6.22 µin/in-°F @Temperature 69.8 - 212 °F
	12.2 µm/m-°C @Temperature 21.0 - 200 °C	6.78 µin/in-°F @Temperature 69.8 - 392 °F
	14.0 µm/m-°C @Temperature 21.0 - 500 °C	7.78 µin/in-°F @Temperature 69.8 - 932 °F
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	0.27 - 0.33 %	0.27 - 0.33 %
Chromium, Cr	0.35 - 0.65 %	0.35 - 0.65 %
Iron, Fe	96.695 - 98.08 %	96.695 - 98.08 %	As remainder
Manganese, Mn	0.65 - 0.95 %	0.65 - 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.

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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M863BA / 8407

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