Low MOQ for L6 Tool Steel | 1.2714 | 55NiCrMoV7 | SKT4 | BH224/5 Wholesale to Panama

Low MOQ for
 L6 Tool Steel | 1.2714 | 55NiCrMoV7 | SKT4 | BH224/5 Wholesale to Panama

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In ASTM A681 standard, L6 steel grade is in L-type for special purpose tool steels. AISI L6 tool steel is in the general class of alloy, oil-hardening tool steel that is characterized by good toughness. ASTM L6 tool steel is suitable for use as tools, dies, and machine parts, which require a good combination of hardness and toughness. Due to its lower carbon content and relatively high nickel content, L6 tool steel has slightly better shock-resistance than more highly alloyed types and shoul...


  • Length: 3-5.8mm or Customization
  • Surface: black, peeled, or rough turned
  • Heat treatment: air-cooling, normalized, annealed, Q&T
  • Smelting process: EAF+LF+VD
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    The company keeps to the operation concept "scientific management, high quality and efficiency primacy, customer supreme for Low MOQ for L6 Tool Steel | 1.2714 | 55NiCrMoV7 | SKT4 | BH224/5 Wholesale to Panama, welcomes all overseas friends and merchants to establish collaboration with us. We will provide you with honest, high quality and efficient service to meet your requirements.


    In ASTM A681 standard, L6 steel grade is in L-type for special purpose tool steels. AISI L6 tool steel
    is in the general class of alloy, oil-hardening tool steel that is
    characterized by good toughness. ASTM L6 tool steel is suitable for use
    as tools, dies, and machine parts, which require a good combination of
    hardness and toughness.

    Due to its lower carbon content and
    relatively high nickel content, L6 tool steel has slightly better
    shock-resistance than more highly alloyed types and should be used where
    some wear-resistance can be sacrificed for increased toughness.

    1. Relevant Steel Specification of L6 Tool Steel

    Country USA German Japan British
    Standard ASTM A681 DIN EN ISO 4957 JIS G4404 BS 4659
    Grades L6/T61206 1.2714/55NiCrMoV7 SKT4 BH224/5

    2. AISI L6 Steel Chemical Composition and Steel Equivalents

    ASTM A681 C Mn P S Si Cr V Mo Ni
    L6/T61206 0.65 0.75 0.25 0.80 0.03 0.03 0.10 0.50 0.60 1.20 . . . . . . . . . 0.50 1.25 2.00
    DIN ISO 4957 C Mn P S Si Cr V Mo Ni
    1.2714/55NiCrMoV7 0.50 0.60 0.60 0.90 0.03 0.02 0.10 0.40 0.80 1.20 0.05 0.15 0.35 0.55 1.50 1.80
    JIS G4404 C Mn P S Si Cr V Mo Ni
    SKT4 0.50 0.60 0.60 0.90 0.03 0.02 0.10 0.40 0.80 1.20 0.05 0.15 0.35 0.55 1.50 1.80
    BS 4659 C Mn P S Si Cr V Mo Ni
    BH224/5 0.49 0.57 0.70 1.00 0.03 0.025 . . . 0.35 0.70 1.10 . . . . . . 0.25 0.40 1.25 1.80

    3. ASTM L6 Tool Steel Mechanical Properties

    Steel L6 Physical Properties

    • Modulus of elasticity [103 x N/mm2]: 215

    • Density [g/cm3]: 7.84

    • Thermal conductivity [W/m.K]: 36.0

    • Electric resistivity [Ohm mm2/m]: 0.30

    • Specific heat capacity[J/g.K]: 0.46

    Mechanical Properties of L6 Steels

    Properties Metric Imperial
    Poisson’s ratio 0.27- 0.30 0.27- 0.30
    Elastic modulus 190-210 GPa 27557-30457 ksi

    4. Forging of L6 Tool Steel

    Forge at 1079°C (1975 F) down to 871°C (1600 F). Do not forge below 843°C (1550 F).

    5. AISI L6 Tool Steel Heat Treatment

    Hardening

    Preheating:
    Heat steel L6 at a rate not exceeding 204°C (400°F) per hour (222°C per
    hour) to 621-677°C (1150-1250°F) and equalize. Soak for 30 minutes for
    the first inch (25.4 mm) of thickness, plus 15 minutes for each
    additional inch (25.4 mm).

    Quenching

    Quench L6 tool steel in oil to 66-51°C (150-125°F).

    Tempering

    Temper
    L6 steels immediately after quenching. Hold at temperature for 1 hour
    per inch (25.4 mm) of thickness when tempering at 204°C (400°F), 4 hours
    minimum, then air cool to ambient temperature.
    However, where increased toughness is desired, at a sacrifice of some hardness, higher tempering temperatures are often used.

    AISI L6 steel does not become brittle, as many other die steels do, when tempered in the range of 232°C to 426°C (450 to 800°F).

    To
    minimize the possibility of cracking, the steel should be tempered
    immediately after hardening and should be heated slowly to the desired
    tempering temperature.

    Annealing

    Annealing of steel L6 must be performed after hot working and before re-hardening.

    Heat
    to 760°C (1400°F) and hold one hour per inch of maximum thickness. Then
    cool slowly with the furnace at a rate not exceeding 28°C per hour(50°F
    per hour) to 538°C (1000°F). Continue cooling to ambient temperature in
    the furnace or in air.

    For improved machinability, hold at 760°C
    (1400°F) for 1 hour per inch (25.4mm) of maximum thickness; 2 hours
    minimum. Then cool slowly with the furnace cool from 677°C (1250°F) to
    760°C (1400°F), hold for 8 hours, then air cool to ambient temperature.

    Because of its air-hardening ability, steel L6 should not be normalized.

    6. Machinability of Steel L6

    Machinability
    of tool steel L6 is very good. It rates 90% of the machinability of the
    W-group water hardening low alloy steels rated 100% as a baseline.

    7. Applications of ASTM A681 L6 Tool Steel

    AISI
    L6 cold working tool steel is for general purpose tools and dies where
    greater toughness is required, but with some sacrifice of
    abrasion-resistance.

    Typically used below applications:

    • spindles,

    • forming rolls,

    • punches,

    • blanking and forming dies,

    • trimmer dies,

    • clutch parts,

    • pawls,

    • bearings,

    • chucks parts,

    • rollers,

    • knuckle pins,

    • clutch pins,

    • shear blades

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    more at http://scitech.quickfound.net/

    After a quick overview of the conversion of iron into steel in steel mills, steel alloys are discussed. “How steel and steel alloys make the modern automobile safer and more durable..”

    Reupload of a previously uploaded film with improved video & sound.

    Public domain film from the Library of Congress Prelinger Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.
    The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).

    http://creativecommons.org/licenses/by-sa/3.0/

    http://en.wikipedia.org/wiki/Steel

    Steel is an alloy that consists mostly of iron and has a carbon content between 0.2% and 2.1% by weight, depending on the grade. Carbon is the most common alloying material for iron, but various other alloying elements are used, such as manganese, chromium, vanadium, and tungsten. Carbon and other elements act as a hardening agent, preventing dislocations in the iron atom crystal lattice from sliding past one another. Varying the amount of alloying elements and the form of their presence in the steel (solute elements, precipitated phase) controls qualities such as the hardness, ductility, and tensile strength of the resulting steel. Steel with increased carbon content can be made harder and stronger than iron, but such steel is also less ductile than iron.

    Alloys with a higher than 2.1% carbon content are known as cast iron because of their lower melting point and good castability. Steel is also distinguishable from wrought iron, which can contain a small amount of carbon, but it is included in the form of slag inclusions. Two distinguishing factors are steel’s increased rust resistance and better weldability.

    Though steel had been produced by various inefficient methods long before the Renaissance, its use became more common after more-efficient production methods were devised in the 17th century. With the invention of the Bessemer process in the mid-19th century, steel became an inexpensive mass-produced material. Further refinements in the process, such as basic oxygen steelmaking (BOS), lowered the cost of production while increasing the quality of the metal. Today, steel is one of the most common materials in the world, with more than 1.3 billion tons produced annually. It is a major component in buildings, infrastructure, tools, ships, automobiles, machines, appliances, and weapons. Modern steel is generally identified by various grades defined by assorted standards organizations…

    http://en.wikipedia.org/wiki/Alloy_steel

    Alloy steel is steel that is alloyed with a variety of elements in total amounts between 1.0% and 50% by weight to improve its mechanical properties. Alloy steels are broken down into two groups: low-alloy steels and high-alloy steels. The difference between the two is somewhat arbitrary: Smith and Hashemi define the difference at 4.0%, while Degarmo, et al., define it at 8.0 %. Most commonly, the phrase “alloy steel” refers to low-alloy steels.

    Every steel is truly an alloy, but not all steels are called “alloy steels”. Even the simplest steels are iron (Fe) (about 99%) alloyed with carbon (C) (about 0.1% to 1%, depending on type). However, the term “alloy steel” is the standard term referring to steels with other alloying elements in addition to the carbon. Common alloyants include manganese (the most common one), nickel, chromium, molybdenum, vanadium, silicon, and boron. Less common alloyants include aluminum, cobalt, copper, cerium, niobium, titanium, tungsten, tin, zinc, lead, and zirconium.

    The following is a range of improved properties in alloy steels (as compared to carbon steels): strength, hardness, toughness, wear resistance, hardenability, and hot hardness. To achieve some of these improved properties the metal may require heat treating.

    Some of these find uses in exotic and highly-demanding applications, such as in the turbine blades of jet engines, in spacecraft, and in nuclear reactors. Because of the ferromagnetic properties of iron, some steel alloys find important applications where their responses to magnetism are very important, including in electric motors and in transformers.

    Low-alloy steel

    Low-alloy steels are usually used to achieve better hardenability, which in turn improves its other mechanical properties. They are also used to increase corrosion resistance in certain environmental conditions.

    With medium to high carbon levels, low-alloy steel is difficult to weld. Lowering the carbon content to the range of 0.10% to 0.30%, along with some reduction in alloying elements, increases the weldability and formability of the steel while maintaining its strength. Such a metal is classed as a high-strength low-alloy steel…

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