AISI 4130H Steel, normalized at 870°C (1600°F), air cooled, 100 mm (4 in.) round

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AISI 4130H Steel, normalized at 870°C (1600°F), air cooled, 100 mm (4 in.) round
Categories:	Metal; Ferrous Metal; Alloy Steel; AISI 4000 Series Steel; Low Alloy Steel; Carbon Steel; Medium Carbon Steel
Material Notes:	A very common general purpose grade of medium carbon, Cr-Mo steel. Flexibility afforded by heat treatment options allows it to attain a range of toughness and strength values. Good hardenability, strength, wear resistance, toughness, and ductility. Normalized: heated to 870°C, air cooled.
Key Words:	AFNOR 25 CD 4 (S), JIS SCM2, JIS SCCrM 1, SS14 2225 (Sweden), alloy steels, UNS H41300, ASTM A304, SAE J1268, DIN 1.7218, medium carbon steels, chromium-molybdenum, chrome-moly
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Physical Properties	Original Value	Comments

Density	7.85 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	163
Hardness, Knoop	184	Converted from Brinell
Hardness, Rockwell B	84	Converted from Brinell
Hardness, Vickers	170	Converted from Brinell
Tensile Strength, Ultimate	615 MPa
Tensile Strength, Yield	400 MPa
Elongation at Break	27 %	in 50 mm
Reduction of Area	61.2 %
Modulus of Elasticity	205 GPa	Typical for steel
Bulk Modulus	160 GPa	Typical for steel
Poissons Ratio	0.29	Calculated
Machinability	70 %	annealed 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	0.0000223 ohm-cm @Temperature 20.0 °C	specimen hardened and tempered
	0.0000271 ohm-cm @Temperature 100 °C	specimen hardened and tempered
	0.0000342 ohm-cm @Temperature 200 °C	specimen hardened and tempered
	0.0000529 ohm-cm @Temperature 400 °C	specimen hardened and tempered
	0.0000786 ohm-cm @Temperature 600 °C	specimen hardened and tempered
	0.0001103 ohm-cm @Temperature 800 °C	specimen hardened and tempered
	0.0001171 ohm-cm @Temperature 1000 °C	specimen hardened and tempered
	0.0001222 ohm-cm @Temperature 1200 °C	specimen hardened and tempered

Thermal Properties	Original Value	Comments
Specific Heat Capacity	0.477 J/g-°C @Temperature >=100 °C
	0.523 J/g-°C @Temperature 150 - 200 °C
	0.837 J/g-°C @Temperature 750 - 800 °C
Thermal Conductivity	30.1 W/m-K @Temperature 1200 °C
	40.7 W/m-K @Temperature 300 °C
	42.7 W/m-K @Temperature 100 °C

Component Elements Properties	Original Value	Comments
Carbon, C	0.27 - 0.33 %
Chromium, Cr	0.75 - 1.2 %
Iron, Fe	97.1 - 98.38 %	As remainder
Manganese, Mn	0.30 - 0.70 %
Molybdenum, Mo	0.15 - 0.25 %
Phosphorus, P	<= 0.035 %
Silicon, Si	0.15 - 0.35 %
Sulfur, S	<= 0.040 %

References for this datasheet.

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