AISI 5160 Alloy Steel (UNS G51600) Friday, 12 Oct, 2012 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
0.284 lb/in3
7.85 g/cm3
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%
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Hardness, Brinell
197
197
Hardness, Knoop (converted from Brinell 219 hardness) Hardness, Rockwell B (converted from 92 Brinell hardness) Hardness, Rockwell C 13
219
Hardness, Vickers (converted from Brinell hardness) Machinability
207
207
55
55
92 13
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. Source - www.azom.com (www.steelguru.com)
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