Category Archives: Blog

3/4 4140 steel plate

3/4 4140 steel plate: China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

3/4 4140 steel plate: Its heat treatment has good strength and good comprehensive mechanical properties.

The common stainless steel’s chromium content is higher than 12.5%. So it has anti-rust performance. From the analysis of the composition, 4140 steel also has chromium. But its chromium content is only 0.8%-1.1%, which is far lower than the standard for rust prevention. Therefore, 4140 steel is not stainless steel. Please pay attention to its rust prevention when using it.

But 4140 steel can be used to make gears. Because lubricating oil is often used when gears are running. The lubricating oil can protect the gear from rust while protecting the normal operation of the gear.

It is used for manufacturing forgings with higher strength and larger tempering cross-section than 35CrMo steel, such as big gear for locomotive traction, supercharger drive gear, rear axle, connecting rod, and spring clamp with great load also can be used for drilling pipe joint and fishing tool of oil deep well below 2000m and can be used for bending machine mold, etc.

News about the steel

The price of bulk commodities (3/4 4140 steel plate )only climbs to the middle and takes a break, and will continue to rise. Because the factors that led to the rise of bulk commodity prices have not changed, the released water is still there, the dollar is still weak, and the supply gap is still there. The recovery of the global economy is still expected, and inflation expectations, in turn, are still pushing up, and commodity prices will continue to rise.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. (3/4 4140 steel plate: We keep a daily inventory of 1500 tons)

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. We are welcome to your kind inquiry.

1/2 4140 steel plate

1/2 4140 steel plate: China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

1/2 4140 steel plate: Its heat treatment has good strength and good comprehensive mechanical properties.

The common stainless steel’s chromium content is higher than 12.5%. So it has anti-rust performance. From the analysis of the composition, 4140 steel also has chromium. But its chromium content is only 0.8%-1.1%, which is far lower than the standard for rust prevention. Therefore, 4140 steel is not stainless steel. Please pay attention to its rust prevention when using it.

But 4140 steel can be used to make gears. Because lubricating oil is often used when gears are running. The lubricating oil can protect the gear from rust while protecting the normal operation of the gear.

It is used for manufacturing forgings with higher strength and larger tempering cross-section than 35CrMo steel, such as big gear for locomotive traction, supercharger drive gear, rear axle, connecting rod, and spring clamp with great load also can be used for drilling pipe joint and fishing tool of oil deep well below 2000m and can be used for bending machine mold, etc.

News about the steel

The price of bulk commodities (1/2 4140 steel plate )only climbs to the middle and takes a break, and will continue to rise. Because the factors that led to the rise of bulk commodity prices have not changed, the released water is still there, the dollar is still weak, and the supply gap is still there. The recovery of the global economy is still expected, and inflation expectations, in turn, are still pushing up, and commodity prices will continue to rise.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. (1/2 4140 steel plate: We keep a daily inventory of 1500 tons)

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. We are welcome to your kind inquiry.

4140 alloy plate

A：Let me share with you something interesting. My customer—— Mike asked me what is the difference between P20 steel and 4140 steel.

B：From the analysis of the composition, they don’t seem to be much different. 

A：Yes. But in fact, P20 steel belongs to plastic mold steel, while 4140 steel is alloy structural steel. 

B：I have checked the information and found that the carbon content of P20 steel is 0.3%, while 4140 steel is 0.42%.

A：Usually the hardness of P20 steel in the delivery state is 28-34HRC. 

B：The delivery status of 4140 steel is usually annealed or tempered according to our customer’s requirements. 

A：Then let’s talk about the use of these two materials.

B：P20 steel can be used for the plastic mold. 

A：4140 steel can be used for engineering structural parts, like high tensile shafts and gears. (4140 alloy plate)

B：Another is that 4140 steel is an alloy structural steel with higher alloying elements than P20 steel, so the price of 4140 steel will be higher than P20 steel. 

A：I hope that customers should consider what kind of performance you need for the steel you purchase and then buy on demand. 

B：The above is about the difference between P20 steel and 4140 steel. If you want to know more, you can visit our website：www.otaisteel.com

A：You can also send an email or call us.

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. We are welcome to your kind inquiry.

4140 plate material

What is 4140 steel?

A：Yesterday, I saw a large truck of steel plates transported into our warehouse.

B：I know that is our 4140 steel. Now we have 1,500 tons of 4140 steel!

A：That’s great! However, some customers don’t know the properties of 4140 steel very well, or what it can be used for.

B：Then we can talk about what is 4140 steel(4140 plate material).

A：4140 steel belongs to the alloy structural steel. After Quenching & Tempering, its hardness is 28-34 HRC.

B：4140 steel used for bending machine molds.

A：Besides, it can be used to under 2000m deep well of oil drill pipe joint and fishing tool.

B：Also, it can be used for engineering structural parts, like high tensile shafts, gears, pinions, and spindles.

A：I have a question. 4140 steel is a kind of alloy structural steel, does it have anti-rust performance?

B：The common stainless steel’s chromium content is higher than 12.5%. So it has anti-rust performance.

A：From the analysis of the composition, 4140 steel also has chromium. But its chromium content is only 0.8%-1.1%, which is far lower than the standard for rust prevention.

B：Therefore, 4140 steel is not stainless steel. Please pay attention to its rust prevention when using it.

A：But 4140 steel can be used to make gears. Because lubricating oil is often used when gears are running. The lubricating oil can protect the gear from rust while protecting the normal operation of the gear.

B：The above is about the properties and uses of 4140 steel. If you want to know more, you can visit our website：www.otaisteel.com

A：You can also send an email or call us.

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. We are welcome to your kind inquiry.

4140 ht flat bar

4140 ht flat bar: China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

4140 ht flat bar: Its heat treatment has good strength and good comprehensive mechanical properties.

The common stainless steel’s chromium content is higher than 12.5%. So it has anti-rust performance. From the analysis of the composition, 4140 steel also has chromium. But its chromium content is only 0.8%-1.1%, which is far lower than the standard for rust prevention. Therefore, 4140 steel is not stainless steel. Please pay attention to its rust prevention when using it.

But 4140 steel can be used to make gears. Because lubricating oil is often used when gears are running. The lubricating oil can protect the gear from rust while protecting the normal operation of the gear.

It is used for manufacturing forgings with higher strength and larger tempering cross-section than 35CrMo steel, such as big gear for locomotive traction, supercharger drive gear, rear axle, connecting rod, and spring clamp with great load also can be used for drilling pipe joint and fishing tool of oil deep well below 2000m and can be used for bending machine mold, etc.

News about the steel

The price of bulk commodities (4140 ht flat bar )only climbs to the middle and takes a break, and will continue to rise. Because the factors that led to the rise of bulk commodity prices have not changed, the released water is still there, the dollar is still weak, and the supply gap is still there. The recovery of the global economy is still expected, and inflation expectations, in turn, are still pushing up, and commodity prices will continue to rise.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. (4140 ht flat bar: We keep a daily inventory of 1500 tons)

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. We are welcome to your kind inquiry.

4140 plate 1/2

4140 plate 1/2: China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

4140 plate 1/2: Its heat treatment has good strength and good comprehensive mechanical properties.

The common stainless steel’s chromium content is higher than 12.5%. So it has anti-rust performance. From the analysis of the composition, 4140 steel also has chromium. But its chromium content is only 0.8%-1.1%, which is far lower than the standard for rust prevention. Therefore, 4140 steel is not stainless steel. Please pay attention to its rust prevention when using it.

But 4140 steel can be used to make gears. Because lubricating oil is often used when gears are running. The lubricating oil can protect the gear from rust while protecting the normal operation of the gear.

It is used for manufacturing forgings with higher strength and larger tempering cross-section than 35CrMo steel, such as big gear for locomotive traction, supercharger drive gear, rear axle, connecting rod, and spring clamp with great load also can be used for drilling pipe joint and fishing tool of oil deep well below 2000m and can be used for bending machine mold, etc.

News about the steel

The price of bulk commodities (4140 plate 1/2 )only climbs to the middle and takes a break, and will continue to rise. Because the factors that led to the rise of bulk commodity prices have not changed, the released water is still there, the dollar is still weak, and the supply gap is still there. The recovery of the global economy is still expected, and inflation expectations, in turn, are still pushing up, and commodity prices will continue to rise.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. (4140 plate 1/2: We keep a daily inventory of 1500 tons)

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. We are welcome to your kind inquiry.

4140 dcf plate

4140 dcf plate: China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

4140 steel sheets: Its heat treatment has good strength and good comprehensive mechanical properties.

The common stainless steel’s chromium content is higher than 12.5%. So it has anti-rust performance. From the analysis of the composition, 4140 steel also has chromium. But its chromium content is only 0.8%-1.1%, which is far lower than the standard for rust prevention. Therefore, 4140 steel is not stainless steel. Please pay attention to its rust prevention when using it.

But 4140 steel can be used to make gears. Because lubricating oil is often used when gears are running. The lubricating oil can protect the gear from rust while protecting the normal operation of the gear.

It is used for manufacturing forgings with higher strength and larger tempering cross-section than 35CrMo steel, such as big gear for locomotive traction, supercharger drive gear, rear axle, connecting rod, and spring clamp with great load also can be used for drilling pipe joint and fishing tool of oil deep well below 2000m and can be used for bending machine mold, etc.

News about the steel

The price of bulk commodities (4140 dcf plate )only climbs to the middle and takes a break, and will continue to rise. Because the factors that led to the rise of bulk commodity prices have not changed, the released water is still there, the dollar is still weak, and the supply gap is still there. The recovery of the global economy is still expected, and inflation expectations, in turn, are still pushing up, and commodity prices will continue to rise.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. (4140 dcf plate: We keep a daily inventory of 1500 tons)

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. We are welcome to your kind inquiry.

4140 flat ground

4140 flat ground: China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

4140 steel sheets: Its heat treatment has good strength and good comprehensive mechanical properties.

The common stainless steel’s chromium content is higher than 12.5%. So it has anti-rust performance. From the analysis of the composition, 4140 steel also has chromium. But its chromium content is only 0.8%-1.1%, which is far lower than the standard for rust prevention. Therefore, 4140 steel is not stainless steel. Please pay attention to its rust prevention when using it.

But 4140 steel can be used to make gears. Because lubricating oil is often used when gears are running. The lubricating oil can protect the gear from rust while protecting the normal operation of the gear.

It is used for manufacturing forgings with higher strength and larger tempering cross-section than 35CrMo steel, such as big gear for locomotive traction, supercharger drive gear, rear axle, connecting rod, and spring clamp with great load also can be used for drilling pipe joint and fishing tool of oil deep well below 2000m and can be used for bending machine mold, etc.

News about the steel

The price of bulk commodities (4140 flat ground )only climbs to the middle and takes a break, and will continue to rise. Because the factors that led to the rise of bulk commodity prices have not changed, the released water is still there, the dollar is still weak, and the supply gap is still there. The recovery of the global economy is still expected, and inflation expectations, in turn, are still pushing up, and commodity prices will continue to rise.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. (4140 flat ground: We keep a daily inventory of 1500 tons)

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. We are welcome to your kind inquiry.

grade 4140 plate

grade 4140 plate: China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

4140 steel sheets: Its heat treatment has good strength and good comprehensive mechanical properties.

On the hardenability of steel, 4140 heat treatment has good strength and good comprehensive mechanical properties, good manufacturability, high yield. The highest temperature is 427 degrees Celsius. 4140 strength, high hardenability, and good toughness, quenching deformation of small, high temperature creep rupture strength, and high.

It is used for manufacturing forgings with higher strength and larger tempering cross-section than 35CrMo steel, such as big gear for locomotive traction, supercharger drive gear, rear axle, connecting rod, and spring clamp with great load also can be used for drilling pipe joint and fishing tool of oil deep well below 2000m and can be used for bending machine mold, etc.

News about the steel

The price of bulk commodities (grade 4140 plate )only climbs to the middle and takes a break, and will continue to rise. Because the factors that led to the rise of bulk commodity prices have not changed, the released water is still there, the dollar is still weak, and the supply gap is still there. The recovery of the global economy is still expected, and inflation expectations, in turn, are still pushing up, and commodity prices will continue to rise.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. (grade 4140 plate: We keep a daily inventory of 1500 tons)

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. We are welcome to your kind inquiry.

4140 1/4 plate

4140 1/4 plate: China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

4140 steel sheets: Its heat treatment has good strength and good comprehensive mechanical properties.

On the hardenability of steel, 4140 heat treatment has good strength and good comprehensive mechanical properties, good manufacturability, high yield. The highest temperature is 427 degrees Celsius. 4140 strength, high hardenability, and good toughness, quenching deformation of small, high temperature creep rupture strength, and high.

It is used for manufacturing forgings with higher strength and larger tempering cross-section than 35CrMo steel, such as big gear for locomotive traction, supercharger drive gear, rear axle, connecting rod, and spring clamp with great load also can be used for drilling pipe joint and fishing tool of oil deep well below 2000m and can be used for bending machine mold, etc.

News about the steel

The price of bulk commodities (4140 1/4 plate )only climbs to the middle and takes a break, and will continue to rise. Because the factors that led to the rise of bulk commodity prices have not changed, the released water is still there, the dollar is still weak, and the supply gap is still there. The recovery of the global economy is still expected, and inflation expectations, in turn, are still pushing up, and commodity prices will continue to rise.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. ( 4140 1/4 plate: We keep a daily inventory of 1500 tons)

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. We are welcome to your kind inquiry.