factory wholesale good quality AISI 4340 Steel | 36CrNiMo4 | 1.6511 | EN24 | 817M40 | SNCM439 Wholesale to Chicago
AISI 4340 steel is a medium carbon, low alloy steel known for its toughness andstrength in relatively large sections. AISI 4340 is also one kind ofnickel chromium molybdenum steels. 4340 alloy steel is generallysupplied hardened and tempered in the tensile range of 930 – 1080 Mpa.Pre hardened and tempered 4340 steels can be further surface hardened by flame or induction hardening and by nitriding. The 4340 steel has goodshock and impact resistance as well as wear and abrasion resistanc...
The company keeps to the operation concept "scientific management, high quality and efficiency primacy, customer supreme for factory wholesale good quality AISI 4340 Steel | 36CrNiMo4 | 1.6511 | EN24 | 817M40 | SNCM439 Wholesale to Chicago, We welcome you to inquire us by call or mail and hope to build a successful and cooperative relationship.
is a medium carbon, low alloy steel known for its toughness and
strength in relatively large sections. AISI 4340 is also one kind of
nickel chromium molybdenum steels. 4340 alloy steel is generally
supplied hardened and tempered in the tensile range of 930 – 1080 Mpa.
Pre hardened and tempered 4340 steels can be further surface hardened by
flame or induction hardening and by nitriding. The 4340 steel has good
shock and impact resistance as well as wear and abrasion resistance in
the hardened condition. AISI 4340 steel properties offer good ductility
in the annealed condition, allowing it to be bent or formed. Fusion and
resistance welding is also possible with our 4340 alloy steel. ASTM 4340
material is often utilized where other alloy steels do not have the
hardenability to give the strength required. For highly stressed parts
it is excellent choice. AISI 4340 alloy steel can also be machined by
all customary methods.
Due to availability the ASTM 4340 grade steel is often substituted
with European based standards 817M40/EN24 and 1.6511/36CrNiMo4 or Japan
based SNCM439 steel. You have the detailed data of 4340 steel below.
1. AISI 4340 Steel Specification and Relevant Standards
|Standard||EN 10250||JIS G4103|
2. ASTM 4340 Steels And Equilvalents Chemical Composition
|JIS G4103||SNCM 439/SNCM8||0.36-0.43||0.60-0.90||0.030||0.030||0.15-0.35||1.60-2.00||0.60-1.00||0.15-0.30|
3. AISI Alloy 4140 Steel Mechanical Properties
(Heat Treated Condition )
|Tensile Strength MPa||Yield Strength
|Thermal expansion co-efficient (20°C/68°F, specimen oil hardened, 600°C (1110°F) temper||12.3 µm/m°C||6.83 µin/in°F|
|Thermal conductivity (typical steel)||44.5 W/mK||309 BTU in/hr.ft².°F|
4. Forging of 4340 Alloy Steel
the steel 4340 first, heat up to 1150°C – 1200°C maximum for forging,
hold until temperature is uniform throughout the section.
Do not forge
below 850 °C. 4340 has good forging characteristics but care must be
taken when cooling as the steel shows susceptibility to cracking.
Following forging operation the work piece should be cooled as slowly as
possible. And cooling in in sand or dry lime is recommended etc.
5. AISI 4340 Steel Grade Heat Treatment
pre-hardened steel stress relieving is achieved by heating steel 4340
to between 500 to 550°C. Heat to 600 °C – 650 °C, hold until temperature
is uniform throughout the section, soak for 1 hour per 25 mm section,
and cool in still air.
full anneal may be done at 844°C (1550 F) followed by controlled
(furnace) cooling at a rate not faster than 10°C (50 F) per hour down to
315°C (600 F). From 315°C 600 F it may be air cooled.
4340 alloy steel should be in the heat treated or normalized and heat
treated condition before tempering. The tempering temperature for
depends upon the strength level desired. For strength levels in the 260 –
280 ksi range temper at 232°C (450 F). For strength in the 125 – 200
ksi range temper at 510°C (950 F). And don’t temper the 4340 steels if
it is in the 220 – 260 ksi strength range as tempering can result in
degradation of impact resistance for this level of strength.
Tempering should be avoided if possible within the range 250 °C – 450 °C due to temper brittleness.
Flame or Induction Hardening
As mentioned above, pre-hardened and tempered 4340 steel bars or plates can be further surface hardened by either the flame or induction hardening
methods resulting in a case hardness in excess of Rc 50. AISI 4340
steel parts should be heated as quickly as possible to the austenitic
temperature range (830 °C – 860 °C) and required case depth followed by
an immediate oil or water quenching, depending upon hardness required,
workpiece size/shape and quenching arrangements.
quenching to hand warm, tempering at 150°C – 200°C will reduce stresses
in the case with minimal effect on its hardness.
All de-carburised surface material must first be removed to ensure best results.
and tempered 4340 alloy steel can also be nitrided, giving a surface
hardness of up to Rc 60. Heat to 500°C – 530°C and hold for sufficient
time (from 10 to 60 hours) to develop the depth of case. Nitriding
should be followed by slow cooling (no quench) reducing the problem of
distortion. The nitrided grade 4340 materials can therefore be machined
to near final size, leaving a small grinding allowance only. The tensile
strength of the 4340 steel material core is usually not affected since
the nitriding temperature range is generally below the original
tempering temperature employed.
Surface hardness achievable is 600 to 650HV.
is best done with the alloy steel 4340 in the annealed or normalized
and tempered condition. It can be readily machined by all conventional
methods such as sawing, turning, drilling etc. However in the high
strength conditions of 200 ksi or greater the machinability is only from
25% to 10% that of the alloy in the annealed condition.
of steel 4340 in the hardened and tempered condition (as normally
supplied), is not recommended and should be avoided if at all possible,
because of the danger of quench cracking, as the mechanical properties
will be altered within the weld heat affected zone.
must be carried out, pre-heat to 200 to 300°C and maintain this while
welding. Immediately after welding stress relieve at 550 to 650°C, prior
to hardening and tempering.
If welding in the hardened and
tempered condition is really necessary, then the work piece, immediately
on cooling to hand warm, should be if possible stress relieved at 15 °C
below the original tempering temperature.
8. Application of 4340 Steel
4340 steel is used in most industry sectors for applications requiring
higher tensile/yield strength than 4140 steel can provide.
Some typical applications such as:
Aircraft Landing Gear
Oil and Gas Drilling,
Warm and Cold Forming,
Transfer Systems, like power transmission gears and shafts.
engineering industries and structural use applications, such as: heavy
duty shafts, gears, axles, spindles, couplings, pins, chucks, molds etc.
TCM BALER：http://www.tcmbaler.com/ a professional manufacturer, specialize in hydraulic compressing machine/ baling press compactor/pressing baler for more than 15years, Our products are applicable for waste cardboard/ cardbox, OCC, plastic bottles ,fiber, rags,wipers,used clothes/clothing,textiles, cotton, newspaper, kraft paper, scrap metal, mattress spring, scrap car body, heavy steel etc. plays a big role in recycling industry, welcomed by domestic and national customers.
1.Fully automatic horizontal baling press
2.Semi-automatic horizontal baling press
3.vertical baling press baler
4.wipers/rags bagging press baler
5.scrap metal baling compactor
6.shearing baler machine
8.movable scrap metal baler compactor
9.single shaft shredder
10.double shaft shredder
Tel: 0086 -21-61522014
Hydraulic Metal Baler, Scrap Baling Press, Aluminum Can Baler Australia, Metal Cans Baler, 14 rowsHydraulic metal baler can be driven by diesel engine for alternative. Hydraulic Metal Baler Application 1. such as scrap steel, aluminum, and copper, hydraulic automatic can baler, Metal Scrap Aluminum Can Baler, Metal Scrap Belarus, pop can baler, Metal Scrap Aluminum Can Baler, Wholesale Various High Quality Metal Scrap Aluminum Can Baler Products from Global Metal Scrap Aluminum Can Baler Suppliers and Metal, metal baler automatic, Scrap Metal Copper Baler Aluminum Recycling Machinery Switzerland, Metal Baling Machine, Scrap metal copper baler aluminum recycling machinery aluminum medicine plate recycling machine. FOB Reference Price, Hydraulic Metal Balers, SMB C40 Cans Baler. 9, Scrap Metal Balers Equipment Colombia, Scrap Metal Sheet Baler, SMB C40 Cans Metal Balers Equipment in 9, Jiangsu, Nantong, Steel Cans And Aluminum Cans Compressing Baler, SMB C40 Cans Baler Overview, , Factory Direct Sale Jpy81 Series Hydraulic Metal Scrap Iron Baler, Balers, Recycling Equipment, Colmar Equipment Ecuador, Copper Waste Metal Scraps Horizontal Hydraulic Baler For Sale, Colmar Balers are used as compactors in the Scrap Metal Industry for the Recycling Equipment. Shear Balers. or in the recycling of aluminum cans or other, Waste Scrap Metal Compressor, Aluminum Can Balers, Steel Can Baler, Drink Container El Salvador, Y81 Metal Scrap, Aluminum Alloy Frame, Aluminum Can, Animal Fiber View more PROSINO aluminum scrap shredders for further size PET bottle baler and aluminum can, Hydraulic Scrap Metal Pressure Baler Sale, Steel Can Baler, Aluminum Can Baler, Used Beverage Finland, 250t Iron Compress Machine, steel can baler machine, aluminum can Used Beverage Containers Aluminum or Steel Can Baler UBC Used Beverage Containers Aluminum or Steel Can, Metal Scrap Iron Baler, Scrap Metal Balers Australian Recycling Equipment Ghana, scrap metal baler compactor, lid baler, triple compression baler, aluminium baler, light scrap baler. Australian Recycling Equipment offers a comprehensive aluminum, zinc, steel., used metal baler, Aluminum Can Baler YouTube Greece, Mobile Baler, Aluminum cans scrap metal balers. Aluminum cans scrap metal balers. Categories: Scrap Metal Balers: Place of Origin: Jiangsu, China: Brand Name: Wanshida:, Hms Scrap Press Baler, Aluminum cans scrap metal balers for sale of ec91133190 Guatemala, Scrap Metal Briquette Machine, scrap metal aluminum can baler machine . The scrap metal aluminum can baler machine is suitable for compressing pop cans, oil drums, paint buckets, scrap, Automatic Hydraulic Secondary Metals Baler, scrap metal aluminum can baler machine, View scrap metal Honduras, metal scrap baler y83 250, Scrap balers and scrap shears by GPS the leading manufacturer of scrap processing equipment and This means that whichever scrap metal recycling machine you, 200 tons steel baler, Homemade aluminum can Baler YouTube Haiti, Hydraulic Steel Baler Manufacture, Lefort Scrap Baler with Bronneberg Guillotine. No price Helmond, Netherlands Recently Added. 1978 specifications: light aluminum cans, shredded cans, , Aluminium Scrap Baling Machine, Scrap Metal Recycling Equipment, Scrap Balers, Scrap Indonesia, Best selling Metal Scrap Baler Manufacture, Metal Balers Products Directory, Equipment Suppliers, Metal Balers Sellers Directory. waste copper aluminum, waste stainless steel, scrap, Recycling Equipment, Used Scrap Balers for sale. Taurus and more. Kazakhstan, Scrap Metal Recycling, McIntyre is a JMC Recycling Systems company and a manufacturer of recycling machinery including, metal balers, equipment for the scrap metal and recycling, Automatic Waste Metal Baler, Metal Hydraulic Baling Press Machine, Metal Copper Scrap Baler ,
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.
Weight: 48 oz.
Blade Thick: 5/16″
Blade Length: 36″
Handle: 13″ Samé (Ray Skin). black braid cord with brass Menuki
Steel: 1055 Carbon
Overall Length: 49″
Sheath: Black Lacquered Wood w/blue violet cover bag