Information

Aisi 4130, Aisi 4130 Steel, Aisi 4130 Density, Material Properties Aisi 4130, Aisi 4130 Price, Aisi 4130 Equivalent Material in Indian Standard, Aisi 4130 Steel Tube, Aisi 4130 Yield Strength

Between 1230 and 950 degrees Celsius (2250 and 1750 degrees Fahrenheit), ASTM A29 Grade 4130 steel should be forged. The smaller the grain size, the lower the forging finishing temperature. If the 4130 alloy steel is forged at too low a temperature, a non-uniform structure may occur in specific regions of the forged item, requiring a normalizing treatment before further heat treatment.

Annealing 4130 steel forgings can be accomplished by transferring the item directly from the forging operation to a furnace set at a sufficient temperature (about 860° C/1575° F) for annealing, and holding for a certain time, and then cooling the furnace. In this technique, a machining-friendly framework can be created. It’s preferable to use this treatment on parts with simple shapes. If the 4130 forging results in some portions finishing significantly cooler than others, a consistent structure will not be achieved, and a spheroidizing anneal at roughly 750 o C (1380 o F) may be utilized for optimal results. It is safe to assume that the ideal form of annealing treatment to utilize prior to machining will be determined solely by experience.

It should then be cooled in the furnace at a pace of less than 50 degrees per hour until it reaches 900 degrees, after which it should be cooled by air.

The nominal normalization temperature for 4130 is 900 o C (1650 o F), followed by a 1600 o F soak and oil quench, but production experience may require a temperature of 50 o F (10 o C) higher or lower than this figure. In fact, the upper range of normalizing temperatures is used when forgings are normalized before being carburized or hardened and tempered. The lower temperature range is employed when normalizing the final heat treatment.

At 1500 to 1600 o F (815 to 870 o C), the steel 4130 should be austenitized (all micro-components changed to austenite). The exact austenitizing temperature is determined by chemical composition, section size, and cooling method within the analytical range. Smaller 4130 pieces may be quenched in oil, whereas larger parts might be quenched in water.

The actual tempering temperature will be determined by the qualities that are required. Depending on the desired strength level, alloy steel 4130 is tempered at temperatures ranging from 398°C to 565°C (750°F to 1050°F). The greater the strength, the lower the tempering temperature. Tempering should not be done between 200 and 420 degrees Celsius (400 and 790 degrees Fahrenheit) to avoid embrittlement.

Machinability

By using traditional machining procedures, the AISI 4130 alloy can be easily machined. Simple shapes can be machined after a normalizing treatment, while more complicated shapes will need to be annealed. When the hardness of 4130 steel is increased, however, machining becomes problematic.

Welding

The weldability of ISI 4130 steel is excellent, and the alloy may be welded using any commercial process. In some cases, the material may require a post-weld stress relief heat treatment.

Low-hydrogen electrodes are recommended for welding, along with a preheat temperature of 150–260°C (300–500°F). Slowly cool down and relax as much as possible.

The AISI 4130 steel alloy is largely utilized in commercial and military aircraft, as well as ground support equipment.

 4130 alloy steel is medium-strength alloy steel. Lighter gauges are lighter and stronger than heavier gauges, making them ideal for auto racing and aerospace.

 The low alloy 4130 steel is widely utilized in a variety of applications, including the following examples:

• Commercial aircraft, aircraft engine mounts
• Military aircraft
• Automotive
• Machine tools
• Hydraulic tools
• Auto racing
• Aerospace
• Oil and gas industries – as forged valve bodies and pumps
• Agricultural and defense industries etc.

Lakshya International is a trusted source for 4130 steel supplies for a variety of applications. Please contact us for a quote or if you have any technical questions. Please contact us for any inquiries or any questions