AISI 4150 Steel, annealed 815°C (1500°F)

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AISI 4150 Steel, annealed 815°C (1500°F)
Categories:	Metal; Ferrous Metal; Alloy Steel; AISI 4000 Series Steel; Low Alloy Steel; Carbon Steel; Medium Carbon Steel
Material Notes:	AISI 4150 is notable for increased hardenability with a small tradeoff in machinability. Best strength and hardness appears in preheat-treated condition. Tailoring carbon content to bar size allows uniform physical attributes to be maintained across a variety of sizes.
Key Words:	Chromium-molybdenum steels, SAE J404, SAE J412, SAE J770, DIN 1.7228, JIS SCM 5 H, JIS SCM 5, UNS G41500, ASTM A322, ASTM A331, ASTM A505, ASTM A519, MIL SPEC MIL-S-11595 (ORD4150)
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Physical Properties	Metric	English	Comments

Density	7.85 g/cc	0.284 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	197	197
Hardness, Knoop	219	219	Converted from Brinell
Hardness, Rockwell B	92	92	Converted from Brinell
Hardness, Rockwell C	13	13	Converted from Brinell hardness. Value below normal HRC range, for comparison purposes only.
Hardness, Vickers	207	207	Converted from Brinell
Tensile Strength, Ultimate	731 MPa	106000 psi
Tensile Strength, Yield	380 MPa	55100 psi
Elongation at Break	20.2 %	20.2 %	in 50 mm
Reduction of Area	40 %	40 %
Modulus of Elasticity	205 GPa	29700 ksi	Typical for steel
Bulk Modulus	160 GPa	23200 ksi	Typical for steels
Poissons Ratio	0.29	0.29	Calculated
Machinability	55 %	55 %	annealed and cold drawn; based on AISI 1212 as 100% machinability
Shear Modulus	80.0 GPa	11600 ksi	Typical for steels
Izod Impact	24.0 J	17.7 ft-lb

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000245 ohm-cm	0.0000245 ohm-cm	Typical 4000 series steel

Thermal Properties	Metric	English	Comments
Specific Heat Capacity	0.475 J/g-°C	0.114 BTU/lb-°F	Typical 4000 series steel
Thermal Conductivity	44.5 W/m-K	309 BTU-in/hr-ft²-°F	Typical steel

Component Elements Properties	Metric	English	Comments
Carbon, C	0.48 - 0.53 %	0.48 - 0.53 %
Chromium, Cr	0.80 - 1.1 %	0.80 - 1.1 %
Iron, Fe	96.745 - 97.67 %	96.745 - 97.67 %	As remainder
Manganese, Mn	0.75 - 1.0 %	0.75 - 1.0 %
Molybdenum, Mo	0.15 - 0.25 %	0.15 - 0.25 %
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.

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M4150J / 7610

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