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AISI 1.2343 steel is a typical alloy Tool steel, Its Hot work Mechanical Properties is very nice. otai is a reliable Aisi 1.2343 supplier.

Time flies, it’s the end of 2019, every company is concluding 2019 and setting the new goals of 2020, so do our company otai special steel company.

In 2019, the main product of Our OTAI Special Steel is the 4140 steel. We are professionals in different kinds of steel, like tool steel, carbon steel, and alloy steel. Usually, our warehouse kept the 4140 steel plates for daily 800Tons. however, H11 is also the best-seller product of our otai company.

Property of aisi 1.2343

AISI 1.2343 steel is a typical alloy Tool steel, Its Hot work Mechanical Properties is very nice. It is that the US air-hardening hot work die steel, the steel-casting industry is one of Europe’s three most common hot die steel, steel carbide small, uniform distribution, resistance to thermal fatigue resistance and corrosion properties good, good hot and cold workability, hardenability well in temperature has a thicker heat forced, oxidation resistance, high toughness and wear resistance.

The application of h11

The application of h11 is very wide, H11 Tool Steel is used in hot forging dies, hot forging die inserts, hot gripper dies, hot nut tools, hot header dies, brass forging and pressing dies, hot forging aluminum base dies, aluminum casting and extrusion dies, zinc die casting dies, extrusion mandrels, plastic molds, cores, die holder blocks, hot press dies, hot work punches, etc.

The inquiry of aisi 1.2343

Here is the inquiry of one customer.

I need a couple of short H11 tool steel bars, Is there a cut to size service available for this?

Size in mm

No.                         Dia                          Length

1                              33                           200

2                              64                           270

3                              74                           210

4                              88                           140

5                              103                         180

6                              124                         50

7                              165                         250

8                              170                         110

If grouped and cut to size,

No.(Grouped)        Dia                          length

1                                33-40                     200

2,3,4                         90                           620

5,6                            130                          230

7,8                            170                           370

kind regards

We provided the proper size as our customer’s requirement, he was satisfied with our h11 steel, please don’t hesitate to connect with me if you also have the demand.

Mr Jack Tan

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: jack@otaisteel.com

Our OTAI Special Steel is the 4140 steel suppliers. We are professional in different kinds of steel, say tool steel, carbon steel and alloy steel. Usually, our warehouse kept the 4140 steel plates for daily 800Tons.

Before talking about the 4140 steel suppliers, I would like to share my story about me first.How time flies, this unlucky year finally is coming to an end very soon. When I recalled this year, I always felt sorry about my little son and much grateful and appreciated for my company OTAI Special Steel to give me the best special support.
At the early beginning of this year, it seems that there was no good start. As my little son got a fever at the 1st day in Lunar year. One month later, he had infectious disease because of the high peak of Epidemic virus in the kindergarden. He was in hospital for about two weeks. Always, I felt sorry and self-blamed to my little boy from the bottom of my heart. Because I thought that it was me did not take good care of him. I didn’t give him enough care and attention when he needed me most at his special moment.
Woe is not alone, after one month, my husband’s finger was hurt by the machine . And he had to be in the hospital for at least two weeks. Therefore I decided that I had to give up my job.I talked with my boss Jack about the details for a long time. And he also knew that how the difficult times I was going through. He said: “ if there is any difficulty no matter on the life or the economy, I could do my best to help you. The door of company will be open for you all the time. And for this period, you could take leave first for taking good care of your family, one month, 6 months or more, whatever you need. When your family is better, you could come back any time.” At this moment, I cried and was thankful because of his kindness.
I would like to say even I was unlucky to meet such setbacks on the life. But I am extremely lucky to join this company OTAI Special Steel (4140 steel suppliers). After 6 months later, I resumed to work, to come back this warm and lovely company. I understood that why our company got the firmed trust from different customers all over the world. I found why OTAI is here for more than 20 years. He not only cares about all the customers, but also pay more attention to the staff. So when you choose the 4140 steel suppliers, you have to find some one that could be reliable and trustable.

Ms Phoenix Li

Mobile/WhatsApp: 0086-13925830813

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: Phoenix@otaisteel.com

As you now ,Otai focus on tooling steel ,the hot work steel 1.2344 (H13)/1.2343 /1.2714 etc,and plastic mold steel 1.2311(P20) /1.2083 /1.2312 /1.2379 etc.

A customer need 1.2344 Hot work tooling steel .and send the RFQ /List demand to us,we also update our best price to them .

It is a little pity that we did not start business cooperation in 2019  . I share the last email from the customer here :

1.2344 Hot Work Tool Steel in the Otai Warehouse

The email from 1.2344 hot work tooling steel customer ：

Dear Elwa :

Thank you very much for your message and calling.

You know, we are company from S***, which sale steel, special tooling steel. We have one big stock here, and we buy a lot of tooling steel materials for our stock.

We have a lot of cutting machine, because we have many customers, and they want to cut a smaller pieces of all materials. So, we are cutting all the time. We have a lot of work for cutting materials to the smaller pieces. And we have a little bit time (sometimes no time) to choose or decide to order next steel materials. Of course, we need its, and we have to find a time for it. But just now is on S*** holiday time, and we have a lot of employes on the holidays.

My collegue, which is responsible for ordering new materials, is on holiday, and he will return next week. Of course, he don´t work only on ordering, he have a lot of next work.

So, please, we need time to decide and choose the supplier for this materials, we calculate with you of course, but I have no answer at this time for you. So, please, give us the time to correct deciding, and after I will send you my next questions, or answer on your offer. Thank you.

2020 new year coming soon ,there must have something new change ,and hope we can set up win-win cooperation with  the customer soon .

Ms Elwa Lee

Mobile/WhatsApp: 0086-15899675236

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: Elwa@otaisteel.com

Cr12MoV Sheet Plate similar to ASTM D2 tool steel and W-Nr. 1.2379 and JIS SKD11 . Why this materials have so much different steel grade number ? And how about the difference between them ? When should these different materials be used? What kind of product is best for what kind of material? Just pay attention to Otai Special Steel , we will give you the best answer .

Cr12MoV Sheet Plate similar to ASTM D2 tool steel and W-Nr. 1.2379 and JIS SKD11 . Cr12MoV was Chinese standards GB/T 1299-2000 , this materials was Cold work die steel, steel hardenability, quenching and tempering hardness, wear resistance, strength are higher than Cr12. Used for manufacturing various cold-punching dies and tools with large cross-sections, complex shapes and heavy working conditions, such as punching dies, trimming dies, hemming dies, steel sheet deep drawing dies, circular saws, standard tools and gauges, Thread rolling die, etc.

Cr12MoV Sheet Plate similar to ASTM D2 tool steel and W-Nr. 1.2379 and JIS SKD11 . ASTM D2 was American standard , D2 steel has high wear resistance, micro-deformation cold work die steel, hard tool steel, carbon content up to 1.5%, chromium content up to 11.5%, and heat treatment hardness up to 60HRC. D2 steel, such as silicon steel sheet dies, cold-cutting scissors, trimming dies, etc.

Cr12MoV Sheet Plate similar to ASTM D2 tool steel and W-Nr. 1.2379 and JIS SKD11 . SKD11 was Japanese standard , The steel has high hardenability, and the cross section of 300 ～ 400 ° ㎜ can be fully hardened. At 300 ～ 400 ° C, it can still maintain good hardness and wear resistance. The toughness is higher than that of Cr12 steel, and the volume change during quenching is minimal. It can be used to make a variety of molds and tools with large cross-sections, complex shapes and withstanding large impact loads. For example, punches with complex shapes, inserts on complex dies, deep drawing die for steel plates, drawing dies, threaded die plates, cold extrusion dies, cold cutting scissors, circular saws, standard tools, measuring tools, etc.

Ms Monica Yu

Mobile/WhatsApp: 0086-13711903397

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: Monica@otaisteel.com

Sold 4140 Alloy Steel in Otai Special Steel in China . Time flies , when i have joined this company i am slim young girl , and now i am the monther of two baby girls . Everyone is getting old , but Alloy steel never changes . Otai Special Steel always here for you to provide any size for AISI 4140 sheet plate and round bar and square bar and flat bar and so on , we have adequate inventory to meet all customer needs . Welcome to contact with us immediently .

Sold 4140 Alloy Steel in Otai Special Steel in China . AISI 4140 Tool steel is a alloy structural steel, 4140 is used for engineering structural, like high tensile shafts, bolts and nuts, gears, pinions and spindles. Locomotive traction with the big gear, supercharger drive gear, pressure vessel, rear axle, gear load of connecting rod and a spring clip,4140 can also be used to under 2000 m deep well of oil drill pipe joint and the fishing tool, and can be used for bending machine mould, etc. Thanks for all the customer from all over the world still stand by Otai Special Steel to support with us . Never change like the steel .

Sold 4140 Alloy Steel in Otai Special Steel in China .  ASTM alloy 4140 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.

Sold 4140 Alloy Steel in Otai Special Steel in China . Welcome customers to inquiry AISI 4140 steel bar, plate, flat steel for the 4140 steel price. We are professional supplier and exporter for more than 20 years. We offer you worldwide solution for aisi alloy 4140 steel bar.

Ms Monica Yu

Mobile/WhatsApp: 0086-13711903397

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: Monica@otaisteel.com

_{Our H13 STEEL -chapter 4}

_{Our H13 STEEL -chapter 4}

As we all know, increasing the carbon content in steel will increase the strength of the steel. For hot work die steel, it will increase the high temperature strength, hot hardness and wear resistance, but it will lead to a reduction in its toughness. Scholars in the tool steel product manual literature compared the performance of various types of H-shaped steel clearly proved this view. It is generally believed that the carbon content limit that leads to a decrease in the plasticity and toughness of steel is 0.4%. For this reason, people are required to follow the following principles in the design of steel alloying: to keep the carbon content of the steel as low as possible while maintaining the strength. Some data have been proposed: when the tensile strength of the steel is above 1550 MPa, the C content is 0.3. % -0.4% is appropriate. The strength Rm of H13 steel is described in the literature as 1503.1 MPa (at 46 HRC) and 1937.5 MPa (at 51 HRC).

The C content in TQ-1, Dievar, ADC3 and other steels recommended by consulting FORD and GM company data are 0.39% and 0.38%. The corresponding toughness indicators are listed in Table 1. The reasons can be seen from this observation.

For hot work die steels that require higher strength, the method used is to increase the Mo content or increase the carbon content based on the composition of H13 steel, which will be discussed later. Of course, a slight reduction in toughness and plasticity is possible. Expected.

2.2 Chromium: Chromium is the most common and inexpensive alloying element in alloy tool steel. The Cr content in the H-type hot work die steel in the United States ranges from 2% to 12%. Among the 37 grades of alloy tool steel (GB / T1299) in China, Cr is included in all steels except 8CrSi and 9Mn2V. Chromium has a beneficial effect on the wear resistance, high temperature strength, hot hardness, toughness and hardenability of steel. At the same time, it will significantly improve the corrosion resistance of steel when dissolved in the matrix. Cr and H13 in H13 steel Si makes the oxide film dense to improve the oxidation resistance of the steel. Furthermore, the effect of Cr on the tempering performance of 0.3C-1Mn steel is analyzed. The addition of ﹤ 6% Cr is beneficial to improve the tempering resistance of the steel, but it does not constitute secondary hardening. When the steel containing Cr ﹥ 6% is quenched, After tempering at 550 ° C, a secondary hardening effect will occur. People generally choose 5% chromium for hot work steel die steel.

WhatsApp: +86-769-23190193

Tel: +86-769-23190193

Fax: +86-769-88705839

Email: Jack@otaisteel.com

_{Our H13 STEEL -chapter 5}

Our H13 steel -CHAPTER 5

Part of the chromium in the tool steel is dissolved in the steel to strengthen the solution, and the other part is combined with carbon, and exists in the form of (FeCr) 3C, (FeCr) 7C3 and M23C6 according to the chromium content, thereby affecting the performance of the steel. In addition, the interaction effects of alloy elements must be considered. For example, when chromium, molybdenum, and vanadium are contained in the steel, Cr> 3% <sup> [14] </ sup>, Cr can prevent the formation of V4C3 and postpone Mo2C. Lattice precipitation indicates that V4C3 and Mo2C are strengthening phases <sup> [14] </ sup> that improve the high temperature strength and tempering resistance of steel, and this interaction improves the heat deformation resistance of the steel.

Chromium is dissolved in the austenite of the steel to increase the hardenability of the steel. Cr, Mn, Mo, Si, and Ni are alloy elements that increase the hardenability of steel, just like Cr. People are accustomed to use the hardenability factor for characterization. Generally, the existing domestic data [15] only use data from Grossmann et al. Later, the further work of Moser and Legat [16, 22] proposed that the C content and austenite grains The degree determines the basic hardenability diameter Dic and the hardenability factor (shown in Figure 3) determined by the alloy element content to calculate the ideal critical diameter Di of the alloy steel, which can also be approximated from the following formula:

Di=Dic×2.21Mn×1.40Si×2.13Cr×3.275Mo×1.47Ni (1)

_{(1) Each alloy element in the formula is expressed by mass percentage. From this formula, people have a fairly clear semi-quantitative understanding of the effects of Cr, Mn, Mo, Si and Ni on the hardenability of steel.}

_{The effect of Cr on the eutectoid point of steel is roughly similar to that of Mn. When the chromium content is about 5%, the C content of the eutectoid point decreases to about 0.5%. In addition, the addition of Si, W, Mo, V, Ti significantly reduces the C content at the eutectoid point. For this reason, it can be known that hot work die steel belongs to hypereutectoid steel like high speed steel. Decreasing the eutectoid C content will increase the alloy carbide content in the austenitized structure and in the final structure.}

WhatsApp: +86-769-23190193

Tel: +86-769-23190193

Fax: +86-769-88705839

Email: Jack@otaisteel.com

38CrMoAl is a nitrided Alloy Steel with high wear resistance, high fatigue strength and high strength.

It is mainly used for nitrided parts with precise dimensions after heat treatment, or various nitrided parts with low impact load and high wear resistance. Such as boring bar, grinding machine spindle, automatic lathe spindle, worm, precision screw, precision gear. And also such as High-pressure valves, valve stems, gauges, templates, rollers, replicas, cylinder blocks, compressor piston rods, governors on steam turbines, rotating sleeves, fixing sleeves, various wear-resistant parts on rubber and plastic extruders, etc.

We dealed with a 38CrMoAl Alloy Steel  project before with a middle east customer .

Order confirm of 38CrMoAl Alloy Steel round bar

Customer need 26 tons 1.8509 alloy steel, Otai Steel engineer suggest 38CrMoAl to them .There is rare 1.8509 stock material in China ,all of Chinese steel mill production 38CrMoAl instead of 1.8509.

Customer try to order 1.8550 /1.8507 /1.8519 instead of 1.8509 alloy steel round bar .and our engineer update the folow chemical composition as below to customer for reference . and customer Choose 38CrMoAl finally .

The order delivery condition as follow :

–1.Hot Rolled；;Black Surface

–2.Hardness：160~260HB

–3.Length：4000~6000mm

–4.UT-SEP 1921C/C or Better

–5.Chmical Analyzed 38CrMoAl ( or 1.8509 )

–6.Fix Diameter ( Accept the tolerance -/+1.5mm)

–7.SGS or other third party inspection under buyer‘s arrangement

Order inspector of 38CrMoAl Alloy Steel Round bar .

After our QC feedback for the test process of inspector,the inspector did not do the steel test before ,and there without some mistake of the test way .

1.First ,the goods is Hot Rolled,Black Surface ,and there is reasonable with rusted ,Black sueface means the item is Ex-mill condition cover with Oxide Layer.

Alloy Steel Black surface + Bright Surface

2.About the unit weight  and Label “38CrMoALA”, each of the sizes produced in a factory and aligned with the printed label.

3.About the Diameter ,The inspector did not use the Vernier Caliper to check it. AGS is the first one who use the length ruler to check it.

After the long meeting with customer , they agree our test report instead of AGS .and finished 38CrMoAl Alloy Steel round bar shipment and payment process as usually .

Ms Elwa Lee

Mobile/WhatsApp: 0086-15899675236

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: Elwa@otaisteel.com

4130 Steel , another known name is Chromoly Steel or AISI 4130, it is a chromium and molybdenum alloy steel. 4130 steel is known for its responsiveness to mechanical and heat treatments.

Do you know about 4130 steel tube? It is commonly used in structural steel.  4130 Steel , another known name is Chromoly Steel or AISI 4130, it is a chromium and molybdenum alloy steel. 4130 steel is known for its responsiveness to mechanical and heat treatments. Let me share the details of 4130 with you.

Characteristic of 4130 steel tube

4130 steel tube is weldable by most commercially popular methods. Cold working is possible and forming often takes place in the annealed condition. It is important to note that the machining of Alloy Steel 4130 is difficult when the hardness of the alloy increases. 4130 steel is popular in many critical industries such as aerospace, automotive, and oil and gas.we can provide 4130 Steel Tube: outer diameter 4mm to 800mm.Surface Finish: Black, Rough Machined, Peeled, Turned or as per given requirements.

Application of 4130 steel include:

• Valve bodies
• Pumps
• Fittings
• Engine mounts
• Welded tubing.
• Oil and gas sector, like collets, connection rods, conveyor pins, stem assemblies, gears, Bearings.

One of our customers comes from Malaysia bought the 4130 from our company, the company is a precision machining service provider catering for the oil and gas sector, he was satisfied with the 4130 steel tube.

Chemicals composition of 4130 include:

• Cr 0.80-1.10%
• Mn 0.40-0.60%
• C 0.28-0.33%
• Si 0.15%-0.30%
• Mo 0.15-0.25%
• S 0.040%
• P 0.035%

Otai Steel offers  4130 steel tube in a variety of sizes and shapes that include rounds, bars, and plates. all of our Steel Alloy 4130 meets or exceeds leading industry standards like ASTM, AMS, DIN, and more. To learn more about our selection of Alloy Steel 4130 or any of our other products and services, please feel free to connect with me.

Otaisteel is a stable and reliable supplier for fortune 500 companies at home and abroad, such as Thyssenkrupp, china north industries group corporation limited. Otai exports various tool steel and alloy steel to more than 30 countries from Europe and American, Middle East, and Asia. Our steel materials meet DIN/ ASTM/EN/JIS etc different international standards.

Mr Jack Tan

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: jack@otaisteel.com

What is the mild steel material? First, let’s learn that what the carbon steel is. According to the definition of SAE / AISI, Carbon steel refers to the following.

If you would like to know the mild steel material, may we need to understand the carbon steel. Generally, carbon steel can be divided into 4 categories.
Low carbon steel (carbon content is not more than 0.30%).
Middle carbon steel (carbon content is 0.30% ~ 0.60%).
High carbon steel (carbon content is 0.60% ~ 1.00%).
Free-cutting steel.
The properties and processing characteristics of carbon steel mainly depend on the content of carbon and manganese, and the purity of the steel.

And what is the classification of mild steel material?
Low carbon steel can be divided into two groups based on the carbon content.
The first group refers to low carbon steel with a carbon content of less than 0.15%.The second group refers to low carbon steel with a carbon content of 0.15% to 0.30%.Mild Steel belongs to a category in the second group. That is a category with a carbon content of 0.15% to 0.30% and an Mn content of not more than 0.75%.

It should be noted that mild steel is a special one in the second group of low carbon steel. Mild steel material generally has good weldability. But due to a certain hardening tendency, pre-weld preheating may be required when the manganese content is high. The cross section is thick, or the joints are highly restrained. When the thickness of the welded joint is greater than 25mm. Especially when the carbon content of the substrate exceeds 0.22%. The mild steel needs to be preheated to about 40 ° C. And after the welding is completed, the stress release heat treatment temperature of the weld zone is about 525 ° C ~ 675 ° C.

We are the professional stockist of  on the tooling steel, high speed steel and mild steel material for more than 20 years. We have our own warehouse. Our machines are including CNC flame cutting,horizontal and Vertical saw  machine, Grinding and Milling machine.For making sure and testing the quality.We have Chemical Spectrometer, Ultrasonic Tester and hardness tester. We aim that quality is the first, cooperation is the second, we OTAI will be always with you for growing up.

Ms Phoenix Li

Mobile/WhatsApp: 0086-13925830813

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: Phoenix@otaisteel.com