Super Purchasing for L6 Tool Steel | 1.2714 | 55NiCrMoV7 | SKT4 | BH224/5 Factory for Iceland
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...
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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,
Extruder Tips and Dies are one of the most critical parts of the Extruder Crosshead as they give the finishing touch to the final product and its importance cannot be ignored. Satya Extrusion is a leading Quality manufacturer of a whole range of Extrusion Tips and Dies with applications in the Wire, Cable, Medical, Pipe and Hose industries. Our customers know us as a source that is dependable because of high wear resistance, low wire breaks and uniformity of size and dimensions. Our experienced and trained engineer’s do the utmost to design & manufacture products, which are more practical and cut above the rest and make sure they suit Customer’s requirements as well. Our core strength is team work resulting in increased Productivity while maintaining exceptional Quality Standards which works to the Customer’s advantage. We can produce Extruder tooling by using your approved Engineering Drawing, Sketch or just a Sample of parts or our Customers can also use the services of our in-house Engineers to design a better tool.
While there are people who realize the importance of Quality Extruder Tips and Dies manufactured from the Professional companies like Satya Extrusion, capable of producing tooling using Certified Premium Quality Alloys, within tight tolerances as a dimensionally and Geometrically correct tool can help you save a lot of expensive polymer that you will otherwise coat on the product and can potentially lead to leaner margins; but still many people fail to understand its true importance and go for Extruder Tips and Dies produced in-house or from small time Job shops not capable of controlling tight tolerances and absolutely no knowledge of material to be used to give long life to the tools. Satya Extrusion manufactures the standard round Hole Extrusion Tips and Dies and profiled Extruder Tips and Dies in various shapes such as Oval, Rectangular, Square, Serration and Multi hole tools for Multi Conductor cables.
Customers achieve better Product Control on their products by using our Extrusion Tips and Dies as we produce our Extruder tools on superior Quality Machines and heat treated properly to ensure a long life. All the tools are inspected individually by our Quality Control Engineers using high resolution Inspection Equipments before they are dispatched to the Customer. Our Extruder Tooling is Diamond polished and there is smooth transition in the inside cone of the Die by avoiding all kinds of shoulders to give a superior finish on Customers products.
While pricing is of essence keeping in mind prevailing Business atmosphere, we offer tools that are Dependable and Delivered on time. To give a better dimensional control on the product, we guarantee concentricity of our Fixed Center tools to be within .005 mm. We provide a Copy of Quality Certificates on specific request by customers which certifies its adherence to the parameters in the Engineering Drawing.
We manufacture Extrusion Tooling in Hardened Steel -1.2379(SKD11/K110/AISID2), 1.2316(S136/AISI420SS) 1.2344 (ASTM H-13), 1.7225 (4140), Inconel, as well as in Full Tungsten Carbide & with Tungsten Carbide inserted in tool body and Poly Crystalline Diamond to enhance the tool life. Carbide Inserted Tips can also be manufactured for multiple conductor Extrusion Tips.
SERVICES OFFERED –STOCK
We offer same day delivery for our regular customers for their standard tooling as we offer Customer Stocking program at no extra cost to them. This helps in better inventory control of Extruder Tips and Dies while still maintaining critical stock level.
Of different oem styles
Satya Extrusion manufactures tooling for its own style of Crossheads as well as for almost all the popular makes of Cross-Heads and In-line Heads
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