4140 Steel plate (2024)

FAQs

Does 4140 come in plate? ›

Available in grade 4140 steel plate in both standard (under 3-inches) and heavy (3-inches or greater) plate thicknesses. Supplied in as rolled condition, but less common conditions - annealed, normalized and normalized and tempered - can be special-ordered. Quenched and tempered for increased through-hardening.

Popular Equivalents to AISI 4140 Steel

Here are some of the most common 4140 steel plate equivalent: 42CrMo4 (EN 10083-3): EN 10083 is European standard which is pretty close to 4140 in terms of chemical composition and mechanical properties. SCM440 (JIS G4105): This is the Japanese counterpart.

Overview. This alloy has high strength, high fatigue strength, toughness, torsional strength, and impact and abrasion resistance. Additionally, 4140 steel is highly ductile when annealed, though it requires more pressure as it is tougher than most carbon steels.

Now we launch the 4140 steel sheet supply. Fast production for 1~10mm, cold rolled 4140 steel sheet, now AVAILABLE, welcome ORDER NOW. Generally thickness from 6mm to 300mm plate is available all the time (over 1000 tons stock of 4140 plate for immediate shipment), while most sold thickness are from 20mm to 120mm.

4140 steel has a higher tensile strength of 655 MPa than 1018 steel with 440 MPa. As a result, the 4140 grade can withstand more pressure and impact than the 1018 grade. Therefore, it is the better choice for applications requiring a high impact frequency.

4140 steel has a higher tensile strength and yield strength than 4130 steel, making it suitable for high-stress components. The tensile strength of 4140 steel ranges from 655 to 979 MPa, while the yield strength is around 415 MPa. The hardness of 4140 steel ranges from 28 to 32 HRC when hardened and tempered.

4140 PH/HT Alloy Steel

Localized hardness may also be imparted by flame or induction hardening. Primarily used in press brake dies, 4140 is also a good choice for applications requiring greater toughness than mild steel.

Perhaps the biggest difference between it and 4140 is its hardenability—where the latter can be heat-treated to 58 HRC or higher, 1018 is limited to case hardening—a.k.a. carburizing—a process that leaves low carbon steel parts with a hard exterior and relatively soft core.

4140 steel has limitations regarding weldability. Precautions like preheating and post-weld heat treatment are necessary to avoid cracking. For optimal results, consult a qualified welder when working with 4140 steel. Machinability of 4140 steel requires specific tooling and techniques due to its strength.

What are the pros and cons of 4140 steel? ›

4140 steel plate has high fatigue strength, excellent toughness, and good corrosion resistance. One disadvantage is the extra care that must be taken when welding it. This grade is used in the aerospace, oil and gas, and many other industries.

4140 steel is used to make various components, including gears, crankshafts, suspension systems, bulldozer blades, and oil and gas equipment. This material is also used in the manufacture of various consumer goods, such as hand tools, sporting goods, and other products that require high strength and wear resistance.

It has good ductility, It has good wear resistance. It is very hard (hardness up to 58 HRC). Pre-hardened 4140 steel has good impact resistance.

We can see from the above table that the mechanical performance data of 4140 steel and 4340 steel seem to be the same, but in practical applications, 4340 is often a level higher than 4140 in terms of strength.In the oil and gas industry, 4140 steel is mostly used in 75K and 80K level, while 4340 can be used in 110K ...

4140 steel is a low-alloy steel that contains chromium, molybdenum, and manganese. These elements make it highly resistant to corrosion in a variety of environments.

4140 Hot Rolled Alloy

Alloying elements include chromium and molybdenum, and as a result these materials are often informally referred to as chromoly steel (common variant stylings include chrome-moly, CrMo, CRMO, CR-MOLY, and similar).

Mild Steel Plates

These plates can easily be welded or formed into different shapes. This makes it useful when construction companies create structures and sections. It can also be cut and bent into different shapes, making it easy to form different steel structures and various equipment.