AISI 6120 Alloy Steel (UNS G61200)

Jun 21 2013

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties

Introduction

Alloy steels are steels with alloying elements other than iron and carbon. When various elements are added to these steels, they become stronger and harder than plain carbon steels. If the total amount of alloy additions accounts for less than 5%, the steel is regarded as a high alloy steel. If the total is above 5%, the steel is called as a low alloy steel.

The following datasheet will provide an overview of AISI 6120 alloy steel.

Chemical Composition

The chemical composition AISI 6120 alloy steels is outlined in the following table.

Element Content (%)
Manganese, Mn 0.7-1
Copper, Cu 0.5 max
Nickel, Ni 0.5 max
Chromium, Cr 0.35 max
Carbon, C 0.3 max
Silicon, Si 0.2-0.8
Vanadium, V 0.15-0.35
Sulfur, S 0.045 max
Phosphorus, P 0.04 max

Physical Properties

The following table shows the physical properties of AISI 6120 alloy steels.

Properties Metric Imperial
Density 7.75 g/cm3 0.280 lb/in3

Mechanical Properties

The mechanical properties of AISI 6120 alloy steels are displayed in the following table.

Properties Metric Imperial
Tensile strength 862 MPa 125000 psi
Yield strength 648 MPa 94000 psi
Modulus of elasticity 201-209 GPa 29200-30300 ksi
Bulk modulus 160-170 GPa 23200-24700 ksi
Shear modulus 81-82 GPa 11700-11900 ksi
Poisson’s ratio 0.27-0.30 0.27-0.30
Elongation at break 21% 21%

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