H13 Steel (DIN 2344) – the perfect tool steel for hot work and cold work applications

The demand for steel shows no downtrends because this alloy of iron has showcased attributes that are very demanded in the manufacturing industry. Steel has found acceptance and demand in whole range of enterprises and it is truly said that now ‘there is little bit of steel in the life of everyone’. This alloy has crept deep in the life of people and the economy. Such resonances have led to the increased brewing of steels and the objective is to develop the perfectly matching grades and types that are suitable for specific applications. This could be called as tier 3 differentiation in the segment of steels; the second tier was that of SS in the yester century. H13 (SKD61) is a specific grade of tool steel that is in high demand in various industries because of the hot and cold work capability of it. H13 Tool Steel is being actively used in drop type forgings and low pressure die casting apart from the extrusions and injection molds among others.

Very high toughness and wear resistance in H13 (SKD 61)

H13 derives its characteristics like extreme toughness and tensile strength through its alloying composition that essentially has molybdenum and chromium. Extreme hot working capacity is developed and makes H13 very versatile against the heat induced stresses that result in the metal fatigues. Cracking and denaturing of the surface is least in H13 Die Steel and this makes it a preferred choice for the hot work molding applications. On the other hand, the H13 tool steel is also used actively for the cold work tasks and its high level of hardness is the reason for its acceptance. The machinability of H13 steel is super & therefore it can be used in high impact industrial applications without the wear and tear at high frequencies.

AISI H13 available in desirable characteristics

The leading Supplier & Stockiest such as Virat Special Steels that specialize in highly refined steel grades like H13 ( DIN 1.2344 steel)  are offering the custom products to the secondary and ancillary units of the economy. The demand of it has increased because of such custom catering that makes possible economical making of components and castings in demanded dimensions. The desirable attributes of hardness could be also customized through regulated annealing and tempering of the base products!

Equivalent Steel Grade

H13 (Indian Standard)

Din 2344 (European / German Standard)

SKD 61 (Japanese Standard)

AISI H13 (American Standard)

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DB6 steel – The Best Choice for Metal Forging Based Manufacturing

Steel has transformed the social economic landscape and our affinities with this alloy of iron have become more pronounced with the passage of time. These affinities could be attributed to the salient attributes that steel adores and which make it a preferred choice in multitudes of applications. We can’t even imagine some core activities without steel. No wonder, we have been passionate to gear metallurgical sciences to develop more resonant grades and standards in steel and SS. DB6 (SKT4) steel is a hot work steel that allows making best forging dies. Metals based manufacturing today forms the basis of many secondary and ancillary enterprises and they rely on steel dies. DB6 is the considered the best choice for making the toughened dies in different sizes and dimensions.

Why DB6 apt for making forging dies and molds?

DB6 steel as a choice for making forging molds and dies is due to various characteristics that it has relative to other metals. It is a hot work steel and therefore allows making the molds that are resilient enough against the hot metals that are put in them. The high level annealing and tempering of DB6 (L6) steel causes extreme toughening and hence generates desirable hot working capacity for the forging tasks. The presence of chromium, nickel, molybdenum and vanadium in DB6 alloy generate the extra toughness and very high wear resistance thus making it perfect contender for closed die forgings of entire diversity. The manufacturers of DB6 hardened steel dies ensure that the desirable hardness is delivered to the die. Generally, it is in the range of 370 to 410 HB for round type and 355 to 400 HB for flat/square type.

Custom making of DB6 dies necessary!

Customization in the manufacture of DB6 steel forging dies is equally important function that determines the efficiency and finesse. Unless the custom development of forging die is done, the attributes of DB6 could be of no use for the secondary manufacturer that seeks to achieve dimensional functionality and finesse also in its forged products. These forged products could be of diversity ranging from the machine components and tools to toys models and other products.  Virat Special Steels offers to make custom forging dies in high quality DB6 (DIN 2714) steel and has been serving the diverse sectors of metals based forging. VIRAT SPECIAL STEELS is committed to match the specification as following details: 

Chemical Composition –

ELEMENT MIN. MAX. ELEMENT MIN. MAX.
CARBON 0. 50 0.60 SULPHUR 0.008
MANGANESE 0.60 0.90 PHOSPHORUS   0.025
CHROMIUM 0.80

 

1.20 SILICON 0.10 0. 40
NICKEL 1.50 1.80 ALUMINIUM
MO LYBDENUM  

0.35

0.55 BORON
VAN ADIUM  0.05 0.12 TIN
COPPER  –

 

ANTIMONY

Gas Level: O2=20 ppm (max.), N2=60 ppm (max.), H2=2.0 ppm (max).

The real specific steel DB6 (2714) in complete size range with dimensional & specific cut to size available with VIRAT only!!!

Understanding The Advantages Of Using DIN 2738 Steel (P20 +Ni)

Virat Special Steels announced as the largest stockiest of DIN 2738 ( P20 + Ni) which is supposed to be an upgraded version of the plastic mold steel 2311. Just like plastic mold steel 2311, DIN 2738 is also supplied in a pre hardened condition. The most specific use of DIN 2738 is that for the purpose of making plastic injection die molds. Besides the fact that DIN 2738 is supplied in pre hardened condition, some of the other important characteristics of this steel are s follows:

  • In the state, when the same is supplied to the customers, the level of hardness of the steel is at 280-320 HB.
  • The nickel content in the steel increases by 0.8% – 1.5% on further hardening.
  • This steel is micro alloyed.
  • The best characteristic of this steel, which makes it perfect for the making of plastic injection die molds, is the fact that it is very good in machining. As a result of this, it becomes absolutely suitable for various purposes like Texturing, polishing of the outsides of various products, provides excellent corrosion resistance to the products, etc.

Other than the making of plastic injection die molds, there are many other applications of this steel. Some of those applications have been discussed below:

  • This steel can be used for making dies for many different industries like the automotive industry, domestic goods industry, etc.
  • Plastic molds of various sizes, big as well as small, can be easily made from the use of DIN 1.2738 (AISI P20).
  • It is useful in the manufacturing of numerous dies and products like high finishing plastic die, Boaster plates used in presses, shoe / Sow blocks and die hammers, which are used for the making of drop hammers, press cassetes, forging dies, Upsetter blockers, and various other dies and molds made for different plastic products.

This steel has a very high demand in the market for the simple reason that this modern and upgraded version of plastic mold steel 2311, offers increased alloy element, which not only increases its hardness, but it also provides extra life. Thus, the parts manufactured through the use of this steel last for a much longer duration. At the same time, the quality of polishing that is done on this steel is also very good. The hardness present in the steel is also uniform throughout the product. Almost all Leading steel company like Virat Special Steels is Stocking and supplying this product and the demand for the same is increasing on a constant basis.

Understanding The Characteristics And Uses Of Die Steel

Die steel is made with plain steel or alloy steel. It is used for the manufacturing of tools, which can be used for multiple purposes, including cutting, stamping, shearing, punching, chipping, etc. There are many different types of die steels that are present in the market. Depending on the way, the die steel is manufactured, the types of die steels include:

  • Hot work Steel : H-11, H13, DB6, P20, ( 2343, 2344, 2714, 2378)
  • Cold work steels :  D2 , D3, O1 ( 2379 , 2080 )
  • Shock resistant and low carbon tool steel
  • High speed die steel M2 , M35, T1
  • Plastic mold tool steel P20 , P20 +Ni  ( 2311, 2738 )

To increase the level of hardness of tool steels, various elements with alloying properties like chromium, vanadium, molybdenum, manganese and tungsten are added to the plain or alloy steel. These added elements make the plain steel harder and gives it stable carbides.

Some of the most important and common features or characteristics of die steel are as follows:

Low Cost

The cost of these die steel is very low. Thus, it easily fits into the budget of almost everyone.

High Hardness

The plain steel or the alloy steel is passed through various processes like water treatment, air treatment, etc. to harden the same. Once the same becomes hard with addition of special alloys, it is called die steel. Therefore, being extremely hard is one of the primary features of Die steel or Tool Steel or Mould Steel.

Suitable For Tough Jobs

Since die steel is extremely hard, this property of it makes it perfect for even small jobs. When used for jobs like punching, cutting, etc., it does not crack easily.

High Resistance Power

Be it against water, heat or shock, the die steel has very high resistance power, and therefore, under these extreme conditions, there is very little wear and tear that happens to the tools made out of die tools.

The high quality die steels available in the market come in many different shapes and varieties. Some of the most commonly manufactured and exported die steel by Virat Special Steels are available in Round, Square, Flats & Ring or Disc shape.

DB 6 STEEL

As the designation itself implies, DB 6 is a Die Block Steel conforming presumably to AISI L6 (U.S.) , SKT4 ( Japan ) and similar to DIN 1.2714 (Europe). Containing Nickel (1.4 to 1.6%); Chromium (0.8 to 1.1%); Molybdenum (0.35 to 0.50%); and traces of Vanadium; it is a borderline high-Carbon steel since its Carbon content is between 0.55 and 0.60 and being higher than that of steels of the DIN 1.2714 class, it is harder without an increase in brittleness.  Its Nickel content gives it great impact resistance, while its Chromium content provides both, toughness and corrosion resistance, so wear is minimal. It is also resistant to thermal shock and thermal fatigue cracking. Molybdenum contributes to high temperature tensile strength. In austenitic Chromium-Nickel steels it inhibits pitting and crevice corrosion, even when Chloride and Sulphur levels are high.

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VIRAT SPECIAL STEELS, INDIA supplying a versatile steel DB6 MOULD STEEL that may be used for both hot and cold work, and can be forged into dies of all kinds. Being relatively expensive at around $ 1,800 a tone, in comparison to steels suitable for work at lower temperatures, it is mainly used for “hot work”.

The ability to withstand repeated heating and cooling cycles is a must for any die material for heat distortion creates huge mechanical stress in addition to the thermal stress imposed by repeated heating-cooling cycles. Further, hot-work die steel SKT4 ( DB6) TOOL STEEL should not only have high hardness, but should retain much of that hardness at high temperatures too; besides exhibiting qualities such as abrasion resistance, strength at high temperatures, thermal fatigue stability, thermal conductivity and low thermal coefficient of expansion even to high temperatures.

DB 6 DIE BLOCKS possesses all of these and so it has become an almost universal steel for forging dies such as press dies, extrusion dies, trim dies, as well as dies for Drop Forging Hammers and Mechanical Presses, Die Molds, Shoe Blocks, Die Holder, Cassettes, Piston Rods, Cranks, Boaster, Shearing Blades, Tools, Plastic Molds and Shafts.

VIRAT SPECIAL STEELS, INDIA generally supplying DIN 2714 (AISI L6) in pre-toughened condition; commonly through quenching and tempering to a force of 1300 N/mm². In special cases it may be supplied after annealing. The working hardness is between 370 to 410 HB for rounds or between 355 to 400 HB for squares and flats.

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