AISI 4130 Alloy Steel UNS G41300

 

AISI 4130 chromium-molybdenum alloy steel is a medium carbon alloy steel with excellent mechanical properties and good quenchability. The following is a detailed introduction to the implementation standards, chemical composition range, chemical composition, mechanical properties, advantages, disadvantages, and uses of this material, as well as the corresponding national brand codes.

 

Standard	Grade	C	Mn	P	S	Si	Cr	Mo
ASTM A29	4130	0.28-0.33	0.40-0.60	<0.035	<0.040	0.15-0.35	0.80-1.10	0.15-0.25

 

Mechanical properties:

* AISI 4130 has excellent mechanical properties. Its tensile strength range is 785-835 MPa, yield strength range is 590-620 MPa, and elongation range is 19%-24%. In addition, its quenchability is good, with a critical quenching diameter in oil reaching 4mm and a hardness value of HRC38-43.

* The strength and toughness of this steel are mainly due to its high carbon content and the addition of chromium and molybdenum elements. These elements enable the steel to form more carbon during quenching, thereby increasing the hardness of the material and enhancing its tensile strength.

* Good quenchability allows AISI 4130 to be suitable for manufacturing large-section parts such as gears and shafts.

* Good hot workability and weldability make AISI 4130 easy to process and connect.

 

Advantages:

* AISI 4130 has high strength and good toughness, which can meet the requirements of various complex working conditions.

* It has good quenchability and is suitable for manufacturing large-section parts.

* AISI 4130 has good hot workability and weldability, which is easy to process and connect.

 

Disadvantages:

* The corrosion resistance of AISI 4130 is general, especially in environments such as chlorides, its corrosion resistance is poorer.

* The notch sensitivity of AISI 4130 is strong, and it is prone to brittle fracture when subjected to impact loads.

 

Applications:

AISI 4130 is widely used in various fields due to its excellent mechanical properties and good quenchability. It is commonly used for manufacturing parts that require high strength and toughness, such as large-section parts like shafts, bolts, gears, connecting rods, etc. In addition, in the automotive industry, it is often used for manufacturing chassis components and other key components. In the construction industry, it is used for manufacturing heavy structural components such as bridges and highway guardrails, etc.

 

Corresponding national brand codes:

* In Japan, the corresponding brand code for AISI 4130 is SCM430.

* In South Korea, the corresponding brand code for AISI 4130 is STS4130.

* In Europe, the corresponding brand code for AISI 4130 is 25CrMo4.

 

In summary, AISI 4130 chromium-molybdenum alloy steel is an excellent medium carbon alloy steel with excellent mechanical

 

 

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