Hot Work Tool Steel

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We are engaged in offering a quality approved range of H-13 Steel Bar 

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Product Feature:

• Mechanical parts and structural steel
  880 Furnace cooling880~ 930 Air cooling
• Soft Annealing: Heat to 650-700°C, cool slowly.
• Normalizing: Normalizing temperature: 890-920°C.
• Carburizing temperature: 880-980°C. Cooling from carburizing temperature: water, oil, air, thermal bath. Core hardening ternperature: 880-920°C.
• Tempering: Tempering temperature: 150-180°C. Forging
• Hot forming temperature 1050-850°C.

Machinability:

• Machinability of CK15 steel is fairly good, especially in the cold drawn or cold worked condition.
• Based upon carbon steel AlS11112 as a reference that is considered 100% machinable (easily machined) the CK15 steel has a rating of 55%.

 

Coefficient of Linear Thermal Expansion 10-6 °CI:

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We are a unique name in the market to provide our honourable customers an exclusive range of Hot Work Tool Steel

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We have attained a notable position in the market by offering the finest quality array of Hot Work Tool Steel.

Features:

• Good strength at high temperature
• Durable finish
• Anti corrosive

Other detail:

• Application areas in hot work are die-casting, extrusion and forging
• Used for high and low pressure die casting, extrusion forging

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We are engaged in offering a quality approved range of Hot Work Tool Steel

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We introduce our business as a notable entity of qualitative array of Hot Work Tool Steel H 11.

Features:

• Elevated durability
• Fine finish
• Corrosion resistance

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We are reckoned entity of this domain affianced in providing an enhanced quality Hot Work Tool Steel.

Features:

• Easy to fit
• Ruggedly constructed
• Premium finish

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Owing to our huge market knowledge, we have been able to serve our valued clients with a wide range of Hot Work Tool Steel.

Features:

• Perfect finish
• Sturdiness
• Precise dimensions

Applications:

• Hot forming tools
• Hot forging dies
• Pressure casting tools
• Hot shear knives
• Tools for plastic industry

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Forging:

• Pre heat the M35 high speed steel slowly and uniformly to 450-500°C and equalise.
• Then increase more quickly to the forging temperature of 950-1100°C.
• Do not allow the forging temperature to drop below 950°C, if this occurs re heating will be necessary.
• Always cool the steel very slowly after forging.

 

Annealing:

• M35 is supplied in the annealed and machine able condition. Re annealing will only be necessary if the steel has been hot worked, forged, or hardened by the toolmaker.
• Heat the M35 high speed steel to 850°C at a rate of no more than 220°C per hour.
• Always hold at temperature for one hour per 25mm of thickness. Furnace cool slowly.
• The M35 annealed hardness achieved should be 260 Brinell or lower.

Stress Relieving:

• If tools produced from M35 high speed steel are heavily machined or ground it is recommended to stress relieve after machining and prior to hardening to minimise the possibility of distortion.
• To stress relieve heat the component to 600-700°C and soak well (approx 2 hours) Cool slowly in the furnace.
• The tools can be finish machined before heat treatment.

Applications:

• Typical applications for M2 high speed steel are twist drills, reamers, broaching tools, taps, milling tools, metal saws.
• M2 is suitable for cold forming tools such as extrusion rams and dies, also cutting tools, plastic moulds with elevated wear resistance and screws

Hardening:

• For best results harden in a vacuum or controlled furnace, or in a properly rectified salt bath.
• Pre heat thoroughly in two steps to 450-500°C, then to 820-870°C, transfer to the high temperature salt bath or furnace.
• The exact hardening temperature to use for M35 will depend on the type of work being treated, but in general components should be hardened from the range of 1050-1250°C.

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Tungsten high-speed tool steels are designated group T steels according to the AISI classification system and range from T1 to T15. These steels have similar characteristics to those of molybdenum high-speed tool steels. The following sections will discuss T5 tool steels in more detail.

Forging

M42 molybdenum high speed tool steel is preheated to 871°C (1599°F) in a slow manner and then soaked. This is followed by rapid heating to 1093°C (1999°F) and slow cooling. Temperatures below 982°C (1799°F) are not suitable for the forging process.

Other Designations

Other designations that are equivalent to T5 tungsten tool steels include:

• DIN 1.3265
• UNI KU
• JIS SKH 4A
• B.S. BT 5
• ASTM A600
• FED QQ-T-590
• SAE J437
• SAE J438
• UNS T12005 Chemical composition Title

The following table shows the thermal properties of T5 tool steels.

Physical Properties

The physical properties of T5 tool steels are given in the following table.

Mechanical Properties

The mechanical properties of T5 tool steels are tabulated below.

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Equivalent materials to M42 molybdenum high speed tool steel are:

• AFNOR 07-05-04-04-02
• DIN 1.3246
• ASTM A600
• FED QQ-T-590
• UNS T11342
• DIN 1.3247Machinability

M42 tool steel can be drilled, turned, threaded, broached, milled and tapped when it is in its annealed condition and rated at 45% of 1% carbon steel.

Forging

M42 molybdenum high speed tool steel is preheated to 871°C (1599°F) in a slow manner and then soaked. This is followed by rapid heating to 1093°C (1999°F) and slow cooling. Temperatures below 982°C (1799°F) are not suitable for the forging process.

Tempering

M42 tool steel is tempered for three times at 538-593°C (1000-1099°F) and then cooled completely between cycles to obtain good results. Tempering is performed in vacuum furnaces or in salt baths.

Annealing

M42 tool steel is heated at 871°C (1599°F) and then cooled slowly in a furnace.

Hardening

M42 tool steel is preheated to 871°C (1599°F), soaked and finally heated to 1204°C (2199°F).

Quenching

A salt media is used for quenching M42 tool steel at 538°C (1000°F) and then the steel is air cooled

Heat Treatment

Heat treatment temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each M42 steel component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult your heat treatment provider for full guidance on heat treatment of high speed steels

Stress Relieving

If tools produced from M42 high speed steel are heavily machined or ground it is recommended to stress relieve after machining and prior to hardening to minimise the possibility of distortion. To stress relieve heat the component to 600-650°C and soak well (approximately two hours) Cool slowly in the furnace. The M42 tools can be finish machined before heat treatment.

Chemical composition Physical Properties

The table below shows the physical properties of M42 molybdenum high speed tool steel.

Mechanical Properties

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Chromium hot-work tool steels are designated as group H steels according to the AISI classification system. This series of steels start from H1 to H19. The most commonly used chromium hot-work steels are H11, H12, and H13, which can be air hardened in 150 mm thick sections. The steels are subjected to minimal distortion during hardening due to their balanced alloy content. The tools produced from chromium hot-work steels can be cooled using water without damage as these steels have low carbon and alloy contents.

This article will give an overview of H11 chromium hot-work steels, which have low carbon content and good toughness. These steels can be deep hardened by heat treatment and air-quenching.

Chemical Composition Physical Properties

The physical properties of H11 tool steels are given in the following table.

Mechanical Properties

The mechanical properties of H11 tool steels are tabulated below

Thermal Properties

The following table shows the thermal properties of H11 tool steels.

Other Designations

Other designations that are equivalent to H11 tool steels include

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Chromium hot-work tool steels are designated as group H steels according to the AISI classification system. This series of steels start from H1 to H19. The most commonly used chromium hot-work steels are H11, H12, and H13, which can be air hardened in 150 mm thick sections. The steels are subjected to minimal distortion during hardening due to their air-hardening and balanced alloy content. The tools produced from chromium hot-work steels can be cooled using water without damage as these steels have low carbon and alloy contents.

This article will give an overview of H13 chromium hot-work steels, which contain strengthening agents such as vanadium and molybdenum. These steels are resistant to softening at elevated temperatures due to the presence of chromium content.

 

Other designations that are equivalent to H13 tool steels include:

• AFNOR Z 40 COV 5
• DIN 1.2344
• UNI KU
• JIS SKD61
• SS 2242
• B.S. BH 13
• ASTM A681
• FED QQ-T-570
• SAE J437
• SAE J438
• SAE J467
• UNS T20813
• AMS 6408

Heat Treatment

H13 tool steels are preheated to 816°C (1500°F). Then the steels are directly heated by increasing the temperature to 1010°C (1850°F) followed by holding for 15 to 40 mins. The steels are then air-quenched.

Forging

H13 tool steels are forged at 1079°C (1975°F). For this type of steels, forging below 898°C (1650°F) is not preferable.

Annealing

H13 tool steels are annealed at 871°C (1600°F) and slowly cooled at 4°C (40°F) in the furnace.

Tempering

Tempering is carried out in H13 tool steels from 538 to 649°C (1000 to 1200°F) to obtain Rockwell C hardness of 53 to 38. Double tempering can also be performed in these steels for every one hour at the preferred tempering temperature.

Chemical Composition: Physical Properties

The physical properties of H13 tool steels are given in the following table

Mechanical Properties

The mechanical properties of H13 tool steels are tabulated below.

Thermal Properties

The following table shows the thermal properties of H13 tool steels.

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M2 Molybdenum High Speed Tool Steel

Description : M2 is a general purpose molybdenum high speed steel. This grade is characterized by balanced Combination of abrasion resistance, toughness and good red hardness. Due to its comparatively low Carbon content, M2 has an excellent combination of toughness properties and abrasion resistance When properly hardened and tempered. M2 is used in a wide used for all kinds of cutting tool, knife and punch and die applications.

Molybdenum high speed steels are designated as Group M steels according to the AISI classification system. Over 95% of high-speed steels manufactured in the US are group M steels. Tungsten is present in all types from M1 to M10, except M6, and cobalt is not present in any these steels. Molybdenum high speed steels have similar performance when compared to tungsten high-speed steels. However, the initial cost of molybdenum tool steels is lower. Titanium nitride, titanium carbide and several other coatings can be used in the tools made of this kind of steels through physical vapor deposition process to improve the performance and life span of the tool.

Other designations that are equivalent to M2 molybdenum high speed tool steels include:
• AFNOR 06-05-04-02
• DIN 1.3343
• UNI KU
• JIS SKH9
• SS 2722
• B.S. BM 2
• FED QQ-T-590
• ASTM A597 (CM-2)
• ASTM A600
• SAE J437
• SAE J438
• UNS T11302

Chemical composition Physical Properties

The physical properties of M2 molybdenum high speed tool steel are given in the following table.

Mechanical Properties

The mechanical properties of M2 molybdenum high speed tool steel are tabulated below

Thermal Properties

The following table shows the thermal properties of M2 molybdenum high speed tool steels.

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