Category Archives: Blog

4140 plate 1/2 thick–It is a general-purpose steel plate with extreme versatility| OTAI

What is 4140 steel

4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components. For example, axles, shafts, bolts, gears, and other applications.

Similar to alloy grade AISI 4130 chrome moly alloy steel but with slightly higher carbon content.

The higher carbon content of 4140 steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steel.

However, it does have inferior weldability characteristics.

Steel news

The high temperature continued in many places in the south, the release of demand was suppressed, and the ups and downs of the capital market affected the sentiment of merchants. Hence, the market failed to continue the trend of unilateral recovery.
Regarding the market trend next week, we will analyze the following points: on the cost side, scrap steel resources are in short supply, prices have rebounded sharply, coke still has the driving force to increase, and the cost of steel mills has increased again, and the willingness to support prices is strong; on the supply side, after the overall increase in raw material prices, the profit margins of steel mills are compressed, and local power cuts are superimposed, and the strength of output recovery may be slowed down. ( 4140 steel)

market price information

From August 8th to August 12th, the steel index closed at 4,440 yuan/ton, up 100 yuan/ton week-on-week. ( 4140 flat) According to the data of information monitoring, as of August 12, the average price of 25mm specification grade 3 rebar in 69 major markets across the country was 4,403 yuan/ton, up 25 yuan/ton from the previous week; Week-on-week rose 16 yuan/ton.

Customer’s story

We would like to share a real case of our customer with you. Jay from Brazil send us an inquiry about the 4140 sheets, which required a lot of specifications and a small quantity. James asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then James placed the order successfully. After receiving the goods, he said that he would seek our cooperation for a long time. (4140 steel plate mill)

4140 steel bar size – – Buy Alloy Steel plate 4140 Online | OTAI

What is 4140 steel

4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components. For example, axles, shafts, bolts, gears, and other applications.

Similar to alloy grade AISI 4130 chrome moly alloy steel but with slightly higher carbon content.

The higher carbon content of 4140 steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steel.

However, it does have inferior weldability characteristics.

Steel news

Under the “double carbon” goal, how to save energy and reduce carbon has become the focus of global attention. The steel industry is a high-energy consumption industry and a key industry of greenhouse gas emissions. Low-carbon technology in the iron and steel industry is the commanding height to lead the low-carbon transformation and development. Vigorously developing low-carbon technology in the iron and steel industry is an effective way for the iron and steel industry to achieve green development. To know more: Carbon emission reduction technology in iron and steel industry – direct reduction ironmaking

Why Choose OTAI

1)All year round, Otai can guarantee our 4140 flat stocks are more than 1500 tons. Different thicknesses and lengths can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4140 steel, working with Uddeholm, Thyssenkrupp, with ISO9001 certification.

Customer’s story

We would like to share a real case of our customer with you. Jay from Brazil send us an inquiry about the 4140 sheets, which required a lot of specifications and a small quantity. James asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so we can meet the needs of customers to customize the specifications of goods. Then James placed the order successfully. After receiving the goods, he said that he would seek our cooperation for a long time. (4140 steel bar size)

4140 htsr plate – – Buy 4140 Hot Rolled Annealed Online | OTAI

What is 4140 steel

4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components. For example, axles, shafts, bolts, gears, and other applications.

Similar to alloy grade AISI 4130 chrome moly alloy steel but with slightly higher carbon content.

The higher carbon content of 4140 steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steel.

However, it does have inferior weldability characteristics.

Steel news

At present, nine counties and cities in Tangshan have lifted the management of regional blockade control.
The clustered epidemics in many places in China have dragged down the production and operation of the manufacturing and construction industries. In the short term, the demand for steel has been unstable, and the rise in steel prices is insufficient.
Once the social “dynamic clearing” is realized in various places, the demand for steel will be released retaliatory, the demand growth may be higher than the supply, the inventory will enter a stage of decline, and there may still be room for steel prices to rise.

Why Choose OTAI

1)All year round, Otai can guarantee our 4140 flat stocks are more than 1500 tons. Different thicknesses and lengths can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4140 steel, working with Uddeholm, Thyssenkrupp, with ISO9001 certified.

Customer’s story

We would like to share a real case of our customer with you. Jay from Brazil send us an inquiry about the 4140 sheets, which required a lot of specifications and a small quantity. James asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then James placed the order successfully. After receiving the goods, he said that he would seek our cooperation for a long time. (4140 hr plate

4140 flat steel –4140 prehard heat treated material or annealed | OTAI

What is 4140 steel

4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components. For example, axles, shafts, bolts, gears, and other applications.

Similar to alloy grade AISI 4130 chrome moly alloy steel but with slightly higher carbon content.

The higher carbon content of 4140 steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steel.

However, it does have inferior weldability characteristics.

Steel news

At present, nine counties and cities in Tangshan have lifted the management of regional blockade control.
The clustered epidemics in many places in China have dragged down the production and operation of the manufacturing and construction industries. In the short term, the demand for steel has been unstable, and the rise in steel prices is insufficient.
Once the social “dynamic clearing” is realized in various places, the demand for steel will be released retaliatory, the demand growth may be higher than the supply, the inventory will enter a stage of decline, and there may still be room for steel prices to rise.

Why Choose OTAI

1)All year round, Otai can guarantee our 4140 flat stocks are more than 1500 tons. Different thicknesses and lengths can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4140 steel, working with Uddeholm, Thyssenkrupp, with ISO9001 certified.

Customer’s story

We would like to share a real case of our customer with you. Jay from Brazil send us an inquiry about the 4140 sheets, which required a lot of specifications and a small quantity. James asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then James placed the order successfully. After receiving the goods, he said that he would seek our cooperation for a long time. (4140 flat steel)

4140 hr plate – – Buy 4140 Hot Rolled Annealed Online | OTAI

What is 4140 steel

4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components. For example, axles, shafts, bolts, gears, and other applications.

Similar to alloy grade AISI 4130 chrome moly alloy steel but with slightly higher carbon content.

The higher carbon content of 4140 steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steel.

However, it does have inferior weldability characteristics.

Steel news

At present, nine counties and cities in Tangshan have lifted the management of regional blockade control.
The clustered epidemics in many places in China have dragged down the production and operation of the manufacturing and construction industries. In the short term, the demand for steel has been unstable, and the rise in steel prices is insufficient.
Once the social “dynamic clearing” is realized in various places, the demand for steel will be released retaliatory, the demand growth may be higher than the supply, the inventory will enter a stage of decline, and there may still be room for steel prices to rise.

Why Choose OTAI

1)All year round, Otai can guarantee our 4140 flat stocks are more than 1500 tons. Different thicknesses and lengths can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4140 steel, working with Uddeholm, Thyssenkrupp, with ISO9001 certified.

Customer’s story

We would like to share a real case of our customer with you. Jay from Brazil send us an inquiry about the 4140 sheets, which required a lot of specifications and a small quantity. James asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then James placed the order successfully. After receiving the goods, he said that he would seek our cooperation for a long time. (4140 hr plate

4140 steel bar size – – Buy Alloy Steel Round Bar 4140 Online | OTAI

What is 4140 steel

4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components. For example, axles, shafts, bolts, gears, and other applications.

Similar to alloy grade AISI 4130 chrome moly alloy steel but with slightly higher carbon content.

The higher carbon content of 4140 steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steel.

However, it does have inferior weldability characteristics.

Steel news

Under the “double carbon” goal, how to save energy and reduce carbon has become the focus of global attention. The steel industry is a high-energy consumption industry and a key industry of greenhouse gas emissions. Low-carbon technology in the iron and steel industry is the commanding height to lead the low-carbon transformation and development. Vigorously developing low-carbon technology in the iron and steel industry is an effective way for the iron and steel industry to achieve green development. To know more: Carbon emission reduction technology in iron and steel industry – direct reduction ironmaking

Why Choose OTAI

1)All year round, Otai can guarantee our 4140 flat stocks are more than 1500 tons. Different thicknesses and lengths can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4140 steel, working with Uddeholm, Thyssenkrupp, with ISO9001 certification.

Customer’s story

We would like to share a real case of our customer with you. Jay from Brazil send us an inquiry about the 4140 sheets, which required a lot of specifications and a small quantity. James asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so we can meet the needs of customers to customize the specifications of goods. Then James placed the order successfully. After receiving the goods, he said that he would seek our cooperation for a long time. (4140 steel bar size)

4140 pre hard steel bar–Its wear resistance is better than cold rolled steel | OTAI

What is 4140 steel

4140 steel is a cold drawn annealed steel of relatively high hardenability with its chromium content providing good hardness penetration, and the molybdenum imparts uniformity of hardness and high strength.

4140 alloy steel well to heat-treatment and is relatively easy to machine in the annealed condition. 4140 steel has good strength and wear resistance, excellent toughness, coupled with good ductility, and the ability to resist stress at elevated temperatures. (4140 plate properties)

One of our customers Stacy from Indonesia sent us an inquiry for 4140 plate steel. As time is tight, she needs to receive these 18 tons of 4140 steel within 45 days. That’s no problem for us because we keep a daily inventory of 1500 tons.

After the customer placed her order, we prepared his 4140 steel ready this week. We also assisted the customer to find the fastest delivery, and the goods were delivered to the customer in 45 days. (4140 pre hard steel bar)

Steel News

In the post-epidemic era, inflation in major developed countries and economies in the world has been high, superimposed on the frequent occurrence of “black swan” events such as various geopolitical conflicts and energy crises since the beginning of the year, and the economic recovery at home and abroad has slowed down. Industrial products including steel and ferroalloys Both supply and demand are under pressure.

Why Choose OTAI

1)All year round, Otai can guarantee our 4140 steel is more than 1500 tons. Different thicknesses and lengths can be customized.

2)Otai is capable of supplying “small lot, various grades” which our competitors cannot do. 

3)10 consecutive years no quality event complaints, over 80% repeat order rate.

4140 steel plate mill–It is a general-purpose steel plate with extreme versatility| OTAI

What is 4140 steel

4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components. For example, axles, shafts, bolts, gears, and other applications.

Similar to alloy grade AISI 4130 chrome moly alloy steel but with slightly higher carbon content.

The higher carbon content of 4140 steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steel.

However, it does have inferior weldability characteristics.

Steel news

The high temperature continued in many places in the south, the release of demand was suppressed, and the ups and downs of the capital market affected the sentiment of merchants. Hence, the market failed to continue the trend of unilateral recovery.
Regarding the market trend next week, we will analyze the following points: on the cost side, scrap steel resources are in short supply, prices have rebounded sharply, coke still has the driving force to increase, and the cost of steel mills has increased again, and the willingness to support prices is strong; on the supply side, after the overall increase in raw material prices, the profit margins of steel mills are compressed, and local power cuts are superimposed, and the strength of output recovery may be slowed down. ( 4140 steel)

market price information

From August 8th to August 12th, the steel index closed at 4,440 yuan/ton, up 100 yuan/ton week-on-week. ( 4140 flat) According to the data of information monitoring, as of August 12, the average price of 25mm specification grade 3 rebar in 69 major markets across the country was 4,403 yuan/ton, up 25 yuan/ton from the previous week; Week-on-week rose 16 yuan/ton.

Customer’s story

We would like to share a real case of our customer with you. Jay from Brazil send us an inquiry about the 4140 sheets, which required a lot of specifications and a small quantity. James asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then James placed the order successfully. After receiving the goods, he said that he would seek our cooperation for a long time. (4140 steel plate mill)

4140 annealed flat – -It is easy to machine and will accept additional heat treatment | OTAI

What is 4140 steel

4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components. For example, axles, shafts, bolts, gears, and other applications.

Similar to alloy grade AISI 4130 chrome moly alloy steel but with slightly higher carbon content.

The higher carbon content of 4140 steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steel.

However, it does have inferior weldability characteristics.

Steel news

Under the “double carbon” goal, how to save energy and reduce carbon has become the focus of global attention. The steel industry is a high-energy consumption industry and a key industry of greenhouse gas emissions. Low-carbon technology in the iron and steel industry is the commanding height to lead the low-carbon transformation and development. Vigorously developing low-carbon technology in the iron and steel industry is an effective way for the iron and steel industry to achieve green development. To know more: Carbon emission reduction technology in iron and steel industry – direct reduction ironmaking

Why Choose OTAI

1)All year round, Otai can guarantee our 4140 flat stocks are more than 1500 tons. Different thicknesses and lengths can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4140 steel, working with Uddeholm, Thyssenkrupp, with ISO9001 certification.

Customer’s story

We would like to share a real case of our customer with you. Jay from Brazil send us an inquiry about the 4140 sheets, which required a lot of specifications and a small quantity. James asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so we can meet the needs of customers to customize the specifications of goods. Then James placed the order successfully. After receiving the goods, he said that he would seek our cooperation for a long time. (4140 annealed flat)

4140 hot rolled flat–it can be normalized by heating it at 913°C | OTAI

What is 4140 steel

4140 steel is a cold drawn annealed steel of relatively high hardenability with its chromium content providing good hardness penetration, and the molybdenum imparts uniformity of hardness and high strength.

4140 alloy steel well to heat-treatment and is relatively easy to machine in the annealed condition. 4140 steel has good strength and wear resistance, excellent toughness, coupled with good ductility, and the ability to resist stress at elevated temperatures. (4140 plate properties)

One of our customers Stacy from Indonesia sent us an inquiry for 4140 plate steel. As time is tight, she needs to receive these 18 tons of 4140 steel within 45 days. That’s no problem for us because we keep a daily inventory of 1500 tons.

After the customer placed her order, we prepared his 4140 steel ready this week. We also assisted the customer to find the fastest delivery, and the goods were delivered to the customer in 45 days. (4140 hot rolled flat)

Steel News

In the post-epidemic era, inflation in major developed countries and economies in the world has been high, superimposed on the frequent occurrence of “black swan” events such as various geopolitical conflicts and energy crises since the beginning of the year, and the economic recovery at home and abroad has slowed down. Industrial products including steel and ferroalloys Both supply and demand are under pressure.

Why Choose OTAI

1)All year round, Otai can guarantee our 4140 steel is more than 1500 tons. Different thicknesses and lengths can be customized.

2)Otai is capable of supplying “small lot, various grades” which our competitors cannot do. 

3)10 consecutive years no quality event complaints, over 80% repeat order rate.