AISI 5160

Introduction
Alloy steels are designated by AISI four-digit numbers. They are more responsive to heat and mechanical treatments than carbon steels. They comprise various types of steels having compositions which exceed the limitations of Va, Cr, Si, Ni, Mo, C and B in the carbon steels.

The following datasheet will provide more details about AISI A5160 alloy steel, which has high ductility, excellent toughness and high tensile yield ratio.

Chemical Composition
The chemical composition of AISI 5160 alloy steel is listed in the following table.

Element	Content (%)
Iron, Fe	97.085 - 97.84
Manganese, Mn	0.750 - 1
Chromium, Cr	0.7 - 0.9
Carbon, C	0.560 - 0.640
Phosphorous, P	GBP 0.0350
Silicon, Si	0.150 - 0.3
Sulfur, S	GBP 0.04

Physical Properties
The following table shows the physical properties of AISI 5160 alloy steel.

Properties	Metric	Imperial
Density	7.85 g/cm3	0.284 lb/in3

Mechanical Properties
The mechanical properties of AISI 5160 alloy steel are outlined in the following table.

Properties	Metric	Imperial
Tensile strength, ultimate	724 MPa	105000 psi
Tensile strength, yield	275 MPa	39900 psi
Modulus of elasticity	190-210 GPa	27557-30458 ksi
Bulk modulus (typical for steel)	140 GPa	20300 ksi
Shear modulus (typical for steels)	80 GPa	11600 ksi
Poissons ratio	0.27 � 0.30	0.27-0.30
Elongation at break (in 50mm)	17.20%	17.20%
Hardness, Brinell	197	197
Hardness, Knoop (converted from Brinell hardness)	219	219
Hardness, Rockwell B (converted from Brinell hardness)	92	92
Hardness, Rockwell C	13	13
Hardness, Vickers (converted from Brinell hardness)	207	207
Machinability	55	55

Thermal Properties
The thermal properties of AISI 5160 alloy steel are outlined in the following table.

Properties	Metric	Imperial
Thermal conductivity	46.6 W/mK	323 BTU in/hr.ft2. �F

Other Designations
Other designations that are equivalent to AISI 5160 alloy steel include the following:
ASTM A29
ASTM A322
ASTM A331
ASTM A505
ASTM A519
ASTM A752
ASTM A829
SAE J1397
SAE J404
SAE J412
SAE J770

Fabrication and Heat Treatment
Machinability
Machining 5160 alloy steel is difficult in “as rolled” condition. Hence, the steel should be annealed before machining to obtain maximum speeds.

Welding
AISI 5160 alloy steel has poor welding property owing to its high chromium and carbon content. Either arc or gas welding methods can be used to weld the steel.

Heat Treatment
AISI 5160 alloy steel is generally hardened using oil. This steel is quenched at 829°C (1525°F) and tempered at temperatures ranging from 427 and 704°C (800 and 1300°F).

Forging
Forging of 5160 alloy steel is performed at temperatures between 1149 and 1204°C (2100 and 2200°F).

Annealing
AISI 5160 alloy steel is annealed at 788°C (1450°F) and then air cooled.

Applications
AISI 5160 alloy steel is suitable for manufacturing leaf springs used in automotive field.

ISI 5160 Steel, oil quenched from 830°C (1525°F), 650°C (1200°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, 650°C (1200°F) temper, 25 mm round. Post Oil quenched hardness 62 HRC surface, 61 HRC half-radius, 60 HRC center. Contains a medium-to-high level of carbon. It is directly hardenable to medium hardness. Used for applications with smallish cross sections in severe service, notably automotive leaf springs and other spring and fastener uses.
Key Words:	SAE J770, UNS G51600, ASTM A322, ASTM A331, ASTM A505, ASTM A519, ASTM A519, SAE J404, SAE J412
Vendors:

Available Properties Density Hardness, Brinell Hardness, Knoop, Converted from Brinell hardness. Hardness, Rockwell B, Converted from Brinell hardness. Hardness, Rockwell C, Converted from Brinell hardness. Hardness, Vickers, Converted from Brinell hardness. Tensile Strength, Ultimate Tensile Strength, Yield Elongation at Break, in 50mm. Modulus of Elasticity, Typical for steel Bulk Modulus, Typical for steel Poissons Ratio, Calculated Machinability, spheroidized annealed and cold drawn. Based on 100% machinability for AISI 1212 steel. Shear Modulus, Typical for steels. Electrical Resistivity, Typical 5000 series steel Specific Heat Capacity, Typical 5000 series steel Thermal Conductivity, Typical steel Carbon, C Chromium, Cr Iron, Fe, As remainder Manganese, Mn Phosphorous, P Silicon, Si Sulfur, S

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