AISI 4130 Steel, annealed at 865°C (1585°F), furnace cooled 11°C (20°F)/hour to 680°C (1255°F), air cooled, 25 mm (1 in.) round

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AISI 4130 Steel, annealed at 865°C (1585°F), furnace cooled 11°C (20°F)/hour to 680°C (1255°F), air cooled, 25 mm (1 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.
Key Words:	alloy steels, UNS G41300, AMS 6350, AMS 6356, AMS 6360, AMS 6361, AMS 6372, AMS 6370, AMS 6371, AMS 6373, ASTM A322, ASTM A331, ASTM A505, ASTM A513, ASTM A519, ASTM A646, JIS SCM 2, JIS SCCrM 1, SS14 2225 (Sweden), B.S. CDS 110 (UK), medium carbon steels, chromium-molybdenum, chrome-moly, MIL SPEC MIL-S-16974, SAE J404, SAE J412, SAE J770, DIN 1.7218, AFNOR 25 CD 4 (France), MIL-S-6758 (flat and round bar), MIS-S-18729 ANN and NORM (sheet and plate), QQS-624 (round bar)
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Physical Properties	Original Value	Comments

Density	7.85 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	217
Hardness, Knoop	240	Converted from Brinell
Hardness, Rockwell B	95	Converted from Brinell
Hardness, Rockwell C	17	Converted from Brinell hardness. Value below normal HRC range, for comparison purposes only.
Hardness, Vickers	228	Converted from Brinell
Tensile Strength, Ultimate	560 MPa
Tensile Strength, Yield	460 MPa
Elongation at Break	21.5 %	in 50 mm
Reduction of Area	59.6 %
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	0.28 - 0.33 %
Chromium, Cr	0.80 - 1.1 %
Iron, Fe	97.03 - 98.22 %	As remainder
Manganese, Mn	0.40 - 0.60 %
Molybdenum, Mo	0.15 - 0.25 %
Phosphorus, P	<= 0.035 %
Silicon, Si	0.15 - 0.30 %
Sulfur, S	<= 0.040 %

References for this datasheet.

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M4130A / 7486

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