About: Elwa

The quality of tooling  material（HSS material  or Alloy steel ） is the basic factor, which affects the machining surface quality, cutting efficiency and lifecycle of  tools.  The cutting part of the tools responsible for cutting work directly of tools .it is so important to choose the tool material in reasonable  .

• High hardness and wear resistance

Hardness is a basic characteristic of tool material (HSS material) .The hardness of the cutting tool must be greater than the cutting material .The hardness of cutting edge used in cutting metal is generally above 60HRC.Wear resistance is the ability of a HSS material to resist wear and tear.

• High heat resistance (thermal stability)

Heat resistance is the main indicator of tool materia’sl (HSS material or alloy steel ) cutting performance. It refers to the tool material under high temperature conditions still maintain a certain hardness, wear resistance, strength and toughness . The cutting tool material should also have the ability to resist oxidation at high temperature ，resist bonding and diffusion. So the cutting tool material should have good chemical stability.

• Good thermophysical property and thermal shock property

The better the thermal conductivity of the tool material, the more easily the cutting heat dissipates from the cutting area which helps to reduce the cutting temperature. In intermittent cutting or using cutting fluid. The tool is often subjected to a large thermal shock (temperature changes dramatically), resulting in cracks in the tool leading to fracture.

• Good process performance

In order to facilitate the manufacture of the tool, the tool material (HSS material and Alloy steel ) is required to have good process performance. Such as forging performance, heat treatment performance, high temperature plastic deformation performance, grinding performance.

• Economy

Economy is one of the important indicators of cutting tool material.  Although the cost of high-quality cutting tool material is very high, its long life-cycle, the cost allocated to each part is not necessarily very high. Therefore in the selection of cutting tool materials to consider its economic influence .

Ms Elwa Lee

Mobile/WhatsApp: 0086-15899675236

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: Elwa@otaisteel.com

China produces over 150,000 tons of high speed steel, the low alloy high speed steel accounts for a big  proportion.The percentage of high performance high speed steel lower than developed countries.It is just starting to the R&D ,and production of powder of high speed steel .

The infomation of High speed steel tools in China

Different cutting tool material with unique advantage and the use scope, and also can replaces by the supplements. The Sales of high speed steel tools going up each year compared with  carbide  alloy tools.

In China market ,The proportion of HSS cutting  tool is relatively large, and carbide alloy tool development rapidly .

The imported cutting tools accounted for 1/3 of the Chinese tools market .Most of them is alloy steel tools ,powder high speed steel ,low-alloy HSS.

In 2018,over 5.2 billions HSS cutting tools, there were nearly 3 billion export to US ,eu with low-price .Most of the item is low-alloy HSS household tools.

The tools imports of China increased from 13.9 billion RMB in 2017 to 14.8 billion RMB in 2018.

It is increase of 6.5% year on year and a record high for two consecutive years. As manufacturing upgrades improve the quality of cutting tools,the market structure for cutting tools continues to change.

At present, Cutting tools are mainly divided into high speed steel , ceramics and superhard materials .

China’s Tools industry status is:

The overall technical level of the cutting tool industry is low. 

The proportion of high-end ultra-hard cutting tool products is low,

The performance quality can not meet the development of high-end equipment manufacturing industry.

And the product category is improving, which compared with the domestic manufacturers, has a strong competitive advantage.

Ms Elwa Lee

Mobile/WhatsApp: 0086-15899675236

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: Elwa@otaisteel.com

M35 High Speed Steel can get high hardness (HRC67-70) after heat treatment process, The hardness (625 ℃ for 4 hours and HRC63 ~ 65), and M35 high speed steel with high wear resistance,toughness and bending strength ,it can avoid the mold edge collapse and reduce early damage such as cracks. it is suitable for manufacturing various kinds of tools for strong cutting,such as wear-resisting and impact-resistant tools, advanced punching dies,screw dies.

Chemical composition (%) :

C 0. 80-0.85, Si 0.20 – 0.40, Mn 0.20-0.40, Cr 3.90- 4. 40, Mo 4.75 -5. 25, V 1.75 -2. 15, W 6. 15- 6. 65, Co 4. 75- 5.2

Equivalent grade of M35 High speed steel ：HITACHI standard –YXM4, SKH55, DIN Grade S6525, AISI/SAE M35.

The Properties of M35 high speed steel mold :

• High abrasion resistance,
• High pressure resistance,
• Sintered resistance
• With longer lifecycle

M35 High Speed Steel Delivery Condition and Hardness :

• Annealed, hardness 269HBS,
• Cold drawn hardness 285 HBS,
• The Hardness after Cold drawn, hardness 277HBS.

Temperature of Heat treatment

• Heat treatment : Temperature -1040~1150℃, and the finished temperature is 930℃.
• Annealed : Temperature 870-900℃,The hardness after annealed : 235-369HBS
• Quenching and Tempering:

1. Preheating Temperature: 732~843℃;
2. Quenching : salt bath furnace: 1204℃; controllable furnace: 1216℃; Quenching medium: oil, air cooling or salt bath;
3. Tempering temperature: 540 ~600℃; hardness: 60HRC after tempering

M35 High Speed Steel Applications :

Cold forging dies, stretch dies, cutting tools, etc.

Ms Elwa Lee

Mobile/WhatsApp: 0086-15899675236

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: Elwa@otaisteel.com

Otai Steel  foreign sales department completed 2019 annual  sales target in November. At the same time, Domestic sales team also created the highest performance in November, especially cash orders value exceeded 100,0000. Both foreign sales team and domestic sales department organized a Winter Picnic together in Folly lake.

The winter picnic of Otai steel sales team

Otai Special steel  HR department prepared the menu according to our feedback of food in advance, then they arranged ingredients and sticks. We drove to Folly Lake Lodge on a Friday afternoon and started our winter picnic .

This is a lively & relaxing banquet. The farm is beautiful, just the sunshine, the breeze not dry, flowers are blooming . We are smile, and really want to stay here all the day ,andlose track of the minutes .

After HR communicated with the owner of farm, everyone worked together to sharpen our skill, washing vegetables, cutting food material, processing seafood, preparing cookware, and preparing sauces and so on  .

I can’t cooking except waitting .

As you know, everyone can know eating well, but not means all of them know how to cooking . Just like the Otai steel sales team know how to sell the alloy steel, carbon steel ,Tooling steel . They know what is 1.2311 ,how about the hardness of 1.2311 after heat treatment . However, it not means each sales know how to handle the steel cutting machine , how to use the Chemical composition test machine ,and how to do the steel UT test . Otai’s QC director know to handle the QC process well, but he don’t know how to cook the beef . Our QC know the hardness of tooling steel well, and also know the temperature of heat treatment well ,but he don’t know how to control the temperature & time for cooking .

When the cooking process starting , we suddenly found that our purchasing manager and sales manager are an good chef .For me ,I can not do more things for cooking except waitting to eat. But for Otai’s Chef , all the food material being different delicious food after cooking by their hand .

It is a little pity that we did not have a group photo finanlly because the sunshine goes down so fast .

Now matter what ,Dec.,12, 2019 . It is the sweet-moment belong to Otai steel team .

Ms Elwa Lee

Mobile/WhatsApp: 0086-15899675236

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: Elwa@otaisteel.com

2019 Carbon steel price Q3 ,2019

We talked about the  price info in article part one of carbon steel price Q1 &Q2 . and we will continue the topic for Q3 2019 .

On the whole ,the prce in Q3 &Q4  keep going down 6.5 % from 636 usd at the July down to 575 USD on Sept.,2019 .

Carbon steel price of C45 hot rolled plate (Q3-2019)

In the part one article, we learned about Carbon steel price of  Q1 and Q2 ,2019.

In the first half of the year, The carbon steel price continued to increase slowly. For example, the price of carbon steel C45 (1045 )  ,which it is increased from 585USD from January to 636USD in June.

Now,let us know some information of  Q3 carbon steel price .

The following table is the price record of carbon steel (C45 plate):

Q3 Carbon steel price ：

C45 carbon steel plate :hot rolled,black surface , Thickness : 15-90mm Length: 6000-9000mm Width :2000-2300 mm

According to the Graph and tables, we found that the price of carbon steel continued to decline duing  Q3 quarter (The rate of  price go down  6.5%).

The Reason of Carbon Steel Price go down during Q3 .

The main reason for the decline in prices : the sufficient supply of the market.
Carbon steel experienced a shortage of output in the first quarter, and kept strong demand in the second quarter. In Q3,  Steel mills releasae the msaa inventory to stock market. The increase in inventory quantity is greater than the actual demand, and prices have started to decline.

The annual environmental protection inspections and steel plant equipment overhauls were successfully completed. The external factors that affect the stable production capacity of steel plants have been reduced. The production capacity of steel plants in the entire market has a stable and benign production expectation.

Relative to the decline in the US dollar price, there is another influential factor: the increase in the US dollar / renminbi exchange rate, which has caused the US dollar price of carbon steel to fall by 2-3 USD / Ton year-on-year.

Ms Elwa Lee

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: Elwa@otaisteel.com

Chinese Carbon steel price in 2019, we made a graph of cabon steel price (C45 /S50C ) according to the price record of hot rolled carbon steel plate price from Jan-2019 until Nov.,we can found the info from graph that Chinese carbon steel price goes up and down between 636 -551 USD /TON .

2019 Carbon steel price record :

According to the graph of C45/S50C hot rolled carbon steel price  ,we can know the follow info :

In 2019 ,C45/S50C  steel price goes up and down between 636 and 551 USD per ton  .

In the Q1,2019 ,Carbon steel price kept going up .EXW price from 590 USD per ton up to 619 USD per ton on March .

In the Q2,2019 ,Carbon steel increased at EXW 637USD per ton on April ,and during May until June ,the price stable at 637 USD per ton .

In the Q3,2019 ,Carbon steel price continues fall from 637 USD to584 USD per ton .

In  the Q4,2019,Carbon steel price price kept going down 551 USD per ton ,the price hit the bottom in 2019 .and price began to rebound in Novenber until now .

The reason of carbon steel price go up during Q1 & Q2:

1. The amount of social funds is abundant, and the ferrous metal (CARBON STEEL) has attracted so much attention from market.

2.The inventory quantity of carbon steel at the market on Q1 is smaler than before ,all the manufacturer & Stockist & Distributor sell out their inventory for cash before Chinese new year 2019 .

3. Society expects the demand for construction sites will better during Q2 , and many stockist stock up a lot ,and waiting to sell by better price in Q2

4. A new round of environmental protection policies announced at the end of 2018 is being implemented, and market expectations are beginning to change.

We will continue our discussion of  Q3&Q4  carbon steel price  information next blog .

Ms Elwa Lee

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: Elwa@otaisteel.com

In the past 2 month,Chinese steel price kept going down ,and it came to an end temporarily by the end of November.A total of 13 commodities in the rise and fall list of commodity prices in November 2019 saw a month-on-month rise in the steel sector, of which 3 rose more than 5%, accounting for 15.8% of the monitored commodities.

Chinese Steel Price Information：

A total of 13 commodities in the rise and fall list of Chinese steel prices in November 2019 . There is  3 rose more than 5%, accounting for 15.8% of the monitored commodities. The top 3 commodities are re-bar (10.15%), wire (6.32%) and hot rolled coil (5.57%). There were 6 kinds of commodities that declined on a month-on-month basis, 2 kinds of commodities that dropped more than 5%, accounting for 10.5% of the monitored commodities in this sector. The decline of the top 3 products are manganese silicon (-6.53%), stainless steel (-6.22%), stainless steel plate (-3.36%). Both rose or fell 0.9 per cent this month.

The Chinese Steel price of steel hot rolled plate

Domestic plate rolling  prices rose slightly in November. Common middle board (material: Q235B; Specification: 20) the price at the beginning of the month is 3642 RMB/TON, and the price at the end of the month is 3673 RMB/TON, it is increased about 0.85% from the beginning of Nov.2019 .

The reason of Chinese Steel Price in rising on Nov. 2019

• Favorable policies and loose capital lead to Cinese steel price in rised on Nov. 2019 .

  Stable investment and shortcomings have begun to accelerate in the end of year, especially in terms of cracking down on funding sources. Chinese steel price goes up as the stable investment being increased . Recently, a number of heavy new policies have been implemented: 2020. New special debt quotas have been released in advance of 1 trillion RMB, fixed asset investment projects, and new capital management regulations have also been officially issued.

  

• Demand exceeds expectations, “supply and demand mismatch”

  In November, the domestic steel market demand exceeded expectations,and it is one of the price of Chinese steel price goes up . In the warm winter environment, the downstream operating rate remains high, and the demand for construction materials continues to rise. Also shipments have increased from the same period of previous years. On the other hand, traders are expected to be cautious at one time, and “de-stocking” efforts are too large. And social inventory continues under decline, while the leading steel mills have controlled the pace of delivery.  The process of “going north to the south” has been unsuccessful, resulting in a significant supply-side gap. Boosted by favorable real estate data, black futures rebounded strongly, eventually triggering a deeper market

• Forecast

  In November, the domestic construction steel market ushered in a rebound. The fundamental reason is that the initial market was collectively bearish, social stocks were at a low level, and demand was released more than expected, eventually forming a higher price under the mismatch between supply and demand.as thedemand increase ,and the market supply can not follow with the demand’s increase, Chinese steel price going up in short time . At present, the market prices in many places have reached annual highs. As the contradiction between supply and demand has eased, there has been resistance to rising prices.

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: elwa@otaisteel.com

1.2311 plastic mold steel. It is widely used in China,The Ex-mill hardness HRC 30 ~ 42, which is suitable for large and medium1.2311 plastic mold steel has good machinability and can be generally polished.

The Chemical composition of 1.2311 Plastic mold steel 

1.2311 plastic mold steel can be used for mold processing directly  after pre-harden processing , it is within good dimensional stability . The 1.2311 plastic mold steel with general usage , and the life-cycle of molds  can reach 50W times .

1.2311 Plastic Mold Steel Production process ：

EAF+LF+VD+ HOT ROLLED(CC） + PRE-HARDEN +Black Surface

1.2311 Plastic mold steel suitable for plastic molds and mold holders of TV front cases, telephones, water dispensers, vacuum cleaners, etc.

● Thermoplastic injection mold, extrusion mold.

● Thermoplastic blow mold.

● The main parts of the heavy-duty mold.

● Cold structure parts.

● Commonly used in the manufacture of TV cases, washing machines, refrigerator inner cases, buckets, etc.

1.2311 Plastic Mold Steel Properties:

Quenched and tempered plastic mould steel.

Hardness in condition as supplied 280-325HB(28-34HRC) . Good machinability, better polishability compared with 1.2312. Capable for texturing.

Characteristics:

1.2311 Plastic mold steel is supplied in the heat treated condition to a tensile strength of 950-1100MPa and by further heat treatment a hardness level of approximately 50 HRC can be achieved.

Improved wear resistance can be achieved by flame/ induction hardening to give a surface hardness of up to 54 HRC or by nitriding, to give a surface hardness of approximately 60 HRC whilst maintaining the high, as supplied core strength of 950-1100MPa. 1.2311 Plstic mold steel offers excellent polishability and good surface finish when subjected to electrical discharge machining (EDM) or texturing.

Applications:

Plastic mould, zinc die-casting tooling. High tensile application – heavy duty shafts, gears, axles, crusher rolls, bolts, etc. Plastic moulds, mould frames for plastic moulds and pressure casting dies, sleeves of recipients

1.2311 Plastic Mold Steel Properties:

Quenched and tempered plastic mould steel.

Hardness in condition as supplied 280-325HB(28-34HRC) . Good machinability, better polishability compared with 1.2312. Capable for texturing.

Characteristics:

1.2311 Plastic mold steel is supplied in the heat treated condition to a tensile strength of 950-1100MPa and by further heat treatment a hardness level of approximately 50 HRC can be achieved.

Improved wear resistance can be achieved by flame/ induction hardening to give a surface hardness of up to 54 HRC or by nitriding, to give a surface hardness of approximately 60 HRC whilst maintaining the high, as supplied core strength of 950-1100MPa. 1.2311 Plstic mold steel offers excellent polishability and good surface finish when subjected to electrical discharge machining (EDM) or texturing.

1.2311 Plastic mold steel Applications:

Plastic mould, zinc die-casting tooling. High tensile application – heavy duty shafts, gears, axles, crusher rolls, bolts, etc. Plastic moulds, mould frames for plastic moulds and pressure casting dies, sleeves of recipients

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: elwa@otaisteel.com