4130 Alloy Steel Round Rod, Unpolished (Mill) Finish, Cold Finished, AMS 6370/AMS S-6758, 1.3125" Diameter, 36" Length

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Price: $105.04    

Product Feature

• 4130 alloy steel has good strength and hardenability, and provides better weldability than 4140 alloy steel
• Meets AMS 6370 and AMS S-6758 specifications
• Cold finished to the specified dimensions
• Unpolished (mill) surface has no finish
• Standard tolerance

Product Description

The 4130 alloy steel round rod has been cold finished, has an unpolished (mill) surface, meets SAE Aerospace Material Specifications AMS 6370 and AMS S-6758 standards, and has a standard tolerance. The 4130 alloy steel grade contains chromium and molybdenum for strength and hardenability, with lower carbon content than 4140 alloy steel to provide better weldability. This material can be heat treated for higher hardness. The rod has been cold finished, a process of removing the outer layer to achieve the specified dimensions.

Steel is an iron alloy with carbon and other elements that modify the steel to achieve specific properties. In general, steels with higher carbon content have greater strength, hardness, and wear resistance, while those with lower carbon content have more formability, weldability, and toughness. Carbon steels, which include most AISI-SAE grades in the 1000 range, are classified by their level of carbon content as low (below 0.3%), medium (0.3% to 0.6%) and high (0.6% and above). Alloy steels, which include AISI-SAE grades in the 1300 and 4000 ranges and above, incorporate elements such as chromium, molybdenum, and nickel to modify properties like machinability and corrosion resistance. Tool steels, which include most grades with a letter and number grade designation, have high carbide content for wear resistance, high hardness, and the ability to hold a cutting edge. Some tool steels are designed to resist deformation when used in elevated temperatures.

Tensile strength, used to indicate a material’s overall strength, is the peak stress it can withstand before it breaks. Wear resistance indicates the ability to prevent surface damage caused by contact with other surfaces. Toughness� describes the material's ability to absorb energy before breaking, while hardness (commonly measured as indentation hardness) describes its resistance to permanent surface deformation. Formability indicates how easily the material can be permanently shaped. Machinability describes how easily it can be cut, shaped, finished, or otherwise machined, while weldability characterizes the ability to be welded.

4130 Alloy Steel Round Rod, Unpolished (Mill) Finish, Cold Finished, AMS 6370/AMS S-6758, 1.3125" Diameter, 36" Length Review

I used this rod for the primary shaft/axle for a home built drum sander I made. Worked perfectly. No wobble in the drum. Shaft is stable. I used a 3/4 horse old drier motor for the sander. Runs beautifully.

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