18 Years Factory offer L6 Tool Steel | 1.2714 | 55NiCrMoV7 | SKT4 | BH224/5 Manufacturer in Azerbaijan
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...
The company upholds the philosophy of "Be No.1 in quality, be rooted on credit and trustworthiness for growth", will continue to serve old and new customers from home and overseas whole-heatedly for 18 Years Factory offer L6 Tool Steel | 1.2714 | 55NiCrMoV7 | SKT4 | BH224/5 Manufacturer in Azerbaijan, We welcome customers, business associations and friends from all parts of the world to contact us and seek cooperation for mutual benefits.
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
2. AISI L6 Steel Chemical Composition and Steel Equivalents
|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|
|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
|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
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).
Quench L6 tool steel in oil to 66-51°C (150-125°F).
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).
minimize the possibility of cracking, the steel should be tempered
immediately after hardening and should be heated slowly to the desired
Annealing of steel L6 must be performed after hot working and before re-hardening.
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
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
L6 cold working tool steel is for general purpose tools and dies where
greater toughness is required, but with some sacrifice of
Typically used below applications:
blanking and forming dies,
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COLD STEEL 88DEC
The Cold Steel Company prides itself on using traditional parts and fittings for its swords forged by traditional Eastern swordsmiths. This dedication to authenticity along with the sheer power and strength of their blades makes Cold Steel swords extremely desirable to collectors.Cold Steel swords and knives are known for their toughness. For instance, a knife in their Tanto series has been tested by being repeatedly thrust through a car door with no damage suffered by the tip of the blade. To achieve this power without breaking or marring Cold Steel uses a steel lamination process known as San Mai III. “San Mai” means, “three layers” and refers to the fact that laminated sword construction can allow various grades (or layers) of steel to be combined in a single blade. Combining layers in this way allows for maximum flexibility (on outside layers of the blade so it won’t shatter when struck in battle) with strength (at the blade’s core with a higher carbon steel).Many Cold Steel blades are also made from Carbon V, a high carbon, low alloy cutlery grade steel. The quality of Carbon V makes it extremely strong due to a smelting process which involves Cold Steel metallurgists maintaining an exact microstructure of the steel. After smelting, every shipment is checked for structural quality, cleanliness and chemical content before being optimized for grain flow along the length of the blade. Finally, a unique heat treating process (a highly guarded trade secret) is applied to every blade, ensuring a durability and beauty unmatched in many of Cold Steel’s rivals.Cold Steel swords are very popular for functional purposes (in the dojo) or for test cutting (an ancient practice known as tamashigeri where a sword’s quality was tested by cutting the bodies of corpses or criminals—straw mats or bamboo are used today). The quality of the steel in their blades denotes a high carbon content (as in the Tanto series) versus stainless steel which can be attractive to look at but does not have the durability needed to withstand the rigors of battle.
JAPANESE SWORDS IMPERIAL SERIES
Our factory has used only traditional materials for our Japanese sword?s fittings. The Tsuba (guard), Fuchi (collar), and Kashira (pommel), are expertly made and finely crafted in nickel-silver brass.
The Habaki (blade collar) is hand made out of nickel-silver brass and each hilt is covered in Samé (ray skin) and tightly wrapped in the traditional style with black silk cord. A beautiful Menuki (a small ornamental sculpture inserted between the ray skin and the cord wrappings on the handle) enhances the sword?s aesthetic appearance and makes for a sword that is as traditional looking as we can possibly make it.
All feature fully sharpened 1055 carbon steel blades, each heat treated to a spring temper. The blade surface is then given a careful polish by hand, with a distinctive mirror polish applied to the fuller (blood groove).