IBC Metal Group supply all sizes of 4140 alloy steel bar to all over the world. With high quality together with competitive price make it popular among our customers from other countries. 4140 steel bar is a type of steel with a carbon content of 0.4% or lower, which makes it more resistant to corrosion than other types of steel. It used for various purposes such as building construction and manufacturing tools, among others.
What is 4140 Alloy Steel Bar?
AISI SAE 4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components, like axles, shafts, bolts, gears and other applications. Similar to alloy grade AISI 4130 chrome moly alloy steel but with a slightly higher carbon content. The higher carbon content of AISI 4140 steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steels, however it does have inferior weldability characteristics.
Supply Range for AISI 4140 Alloy Steel Bar
4140 Steel Round Bar: Diameter 8mm – 3000mm
AISI 4140 Steel Plate: Thickness 10mm – 1500mm x Width 200mm – 3000mm
4140 Steel Grade Square: 20mm – 500mm
Surface Finish: Black, Rough Machined, Turned or as per given requirements.
Common 4140 Steel Specifications
4140 Alloy Steel Bar Chemical Composition
Mechanical Properties of AISI Alloy 4140 Steel Bar, Plates, Square
Forging
Preheat the steel carefully, heat to 1150℃ – 1200℃ maximum, hold until temperature is uniform throughout the section. Do not forge below 850℃. Following forging operation the work piece should cool as slowly as possible.
AISI 4140 Steel Grade Heat Treatment
Annealing
Heat ASTM 4140 steels to 800℃ – 850℃, hold until temperature is uniform throughout the section and cool in furnace.
Normalizing
Heat steel alloy 4140 to 870 ℃ – 900 ℃, hold until temperature is uniform throughout the section, soak for 10 – 15 minutes and cool in still air.
Tempering
Re-heat 4140 grade steel to 550℃ – 700℃ as required, hold until temperature is uniform throughout the section, soak for 1 hour per 25 mm of section, and cool in still air.
Hardening of AISI Alloy Steel 4140
AISI alloy 4140 steel bar, plate and square can be hardened by cold working, or heating and quenching.
SAE 4140 alloy steel usually supplied ready heat treated to hardness in 18-22 HRC. If further heat treatment required, then heat to 840℃ – 875℃, hold until temperature is uniform throughout the section, soak for 10 – 15 minutes per 25 mm section, and quench in oil, water, or polymer as required.
Application of AISI Alloy Round 4140 Steel Bar
ASTM 4140 alloy steel bar, flat or plate material can be used for as wide variety of applications where greater toughness and wear resistance is needed over lower carbon grades. Typical applications for 4140 tool steel uses include Components, adapters, arbors, strippers, holder blocks, mold bases, ejectors, back up and support tooling, fixtures, jigs, molds, cams, drill collars, Axle Shafts, Bolts, Crankshafts, stubs, couplings, reamer bodies, axles, shafting, piston rods, rams, hydraulic machinery shafts, gears, sprockets, gear racks, chain links, spindles, tool bodies, tool holders, tie rods, Connection Rods, Chuck Bodies, Collets, Conveyor Pins & Rolls, Ejector Pins, Forks, Gears, Guide Rods, Hydraulic Shafts & Parts,Lathe Spindles, Logging Parts, Milling Spindles, Motor Shafts, Nuts, Pinch Bars, Pinions, Pump Shafts, boring bars, tracks, slides, wear strips or parts, forming dies, brake dies, trim dies, bolsters, machinery parts and components, etc.
Why Buy a 4140 Steel Bar?
There are many reasons why you should buy a 4140 bar. For starters, it has a high tensile strength and is corrosion resistant. It is also lightweight – which means that it’s easy to carry. The 4140 steel bar is a popular choice for those who need a high-quality steel bar. There are many reasons why this type of steel is preferred over other types of steel bars.
The first reason is that the 4140 steel bar has a higher tensile strength than other types of steel. The second reason is that it has better machinability, which means it’s easier to work with and less likely to have any machining defects. The third reason is that the 4140 steel has greater corrosion resistance compared to other types of steels, which means it can last longer without rusting or corroding.
Conclusion
4140 steel bar stock is a type of steel with high strength and stiffness. It used in the construction industry for the manufacture of bridges, buildings, and other structures. Also, the 4140 steel bar stock has many advantages over other types of steel such as being able to be cut, welded, drilled and bent without losing its strength. It is also heat resistant to a certain extent.
IBC Metal Group is here for you if you need an efficient alloy steel round bar supplier and a centerless ground bar supplier who provides you with quality 4140 Alloy Steel bar! We work closely with our clients to ensure that their precision ground bars delivered to the correct specifications. Call us or request a quote!
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