AISI 51B60H Steel, oil quenched from 830°C (1525°F), 540°C (1000°F) temper, 25 mm (1 in.) round

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AISI 51B60H Steel, oil quenched from 830°C (1525°F), 540°C (1000°F) temper, 25 mm (1 in.) round
Categories:	Metal; Ferrous Metal; Alloy Steel; AISI 5000 Series Steel; Low Alloy Steel; Carbon Steel; High Carbon Steel
Material Notes:	Oil quenched from 830°C, 540°C temper, 25 mm round. Post oil quenched hardness 62 HRC surface, 61 HRC half-radius, 60 HRC center. Applications: automotive leaf springs.
Key Words:	UNS H51601, ASTM A304, SAE J1268
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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	341	341
Hardness, Knoop	369	369	Converted from Brinell
Hardness, Rockwell B	99	99	Converted from Brinell
Hardness, Rockwell C	37	37	Converted from Brinell
Hardness, Vickers	361	361	Converted from Brinell
Tensile Strength, Ultimate	1145 MPa	166100 psi
Tensile Strength, Yield	1005 MPa	145800 psi
Elongation at Break	14.5 %	14.5 %
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 %	Spheroidized annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.
Shear Modulus	80.0 GPa	11600 ksi	Typical for steel.

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000219 ohm-cm	0.0000219 ohm-cm	Typical 5000 series steel

Thermal Properties	Metric	English	Comments
Specific Heat Capacity	0.475 J/g-°C	0.114 BTU/lb-°F	Typical 5000 series steel
Thermal Conductivity	46.6 W/m-K	323 BTU-in/hr-ft²-°F	Typical steel

Component Elements Properties	Metric	English	Comments
Boron, B	0.00050 - 0.0030 %	0.00050 - 0.0030 %
Carbon, C	0.55 - 0.65 %	0.55 - 0.65 %
Chromium, Cr	0.60 - 1.0 %	0.60 - 1.0 %
Iron, Fe	96.872 - 98.05 %	96.872 - 98.05 %	As remainder
Manganese, Mn	0.65 - 1.1 %	0.65 - 1.1 %
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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M516DG / 8207

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