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Forged Steel Bar AISI 4140, 4340, 8620, 4320, 52100

China Forged Steel Bar AISI 4140, 4340, 8620, 4320, 52100, Find details about China Forged Steel Bar, Forged Round Bar from Forged Steel Bar AISI 4140, 4340, 8620, 4320, 52100

Special Use
Mold Steel, Free Cutting Steel, Cold Heading Steel, Machining Steel
Shape
Round/Flat/Block/Square/Tube
Length
3-5.8m, or as Per Request
Certificate
ISO, ABS, BV, CCS, Dnv, Lr, Gl, Mill Certificate
Process
Eaf+Lf+Vd+Forged+Heat Treatment(Optional)
Delivery Condition
Hot Rolled/Forged/Cold Drawn
Heat Treatment
Annealed/Normalized/Q+T
Quality Inspection
Ut,Chemical Composition,Physical Properties/SGS
Ut Standard
Sep 1921-84 D/D
Grain Size
ASTM E112
Non-Metallic Inclusion
ASTM E45
Technical Data
Ensile Strength, Yield Strength, Elongation
Stock
Available in Stock
Delivery Time
30-45 Days
Usage
Automotive, Aerospace, Power Generation, Oil & Gas
Experience
15 Years Manufacturer Experience
Trademark
QILU
Transport Package
Standard Seaworthy Packages, or as Per Request
Specification
Dia 6-1200
Origin
China
HS Code
72284000
Special Use
Mold Steel, Free Cutting Steel, Cold Heading Steel, Machining Steel
Shape
Round/Flat/Block/Square/Tube
Length
3-5.8m, or as Per Request
Certificate
ISO, ABS, BV, CCS, Dnv, Lr, Gl, Mill Certificate
Process
Eaf+Lf+Vd+Forged+Heat Treatment(Optional)
Delivery Condition
Hot Rolled/Forged/Cold Drawn
Heat Treatment
Annealed/Normalized/Q+T
Quality Inspection
Ut,Chemical Composition,Physical Properties/SGS
Ut Standard
Sep 1921-84 D/D
Grain Size
ASTM E112
Non-Metallic Inclusion
ASTM E45
Technical Data
Ensile Strength, Yield Strength, Elongation
Stock
Available in Stock
Delivery Time
30-45 Days
Usage
Automotive, Aerospace, Power Generation, Oil & Gas
Experience
15 Years Manufacturer Experience
Trademark
QILU
Transport Package
Standard Seaworthy Packages, or as Per Request
Specification
Dia 6-1200
Origin
China
HS Code
72284000
AISI 4340 4330 4118 4130 Rolled Forged Round Steel Rod Bar

Forged Steel Bar AISI 4140, 4340, 8620, 4320, 52100

1: 4340 steel introduction
AISI 4340 steel 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.
 
2: 4340 Steel equivalent
CountryJapanGermanyBritainUSA
StandardJIS G4103EN10250BS970ASTM A29
GradeSNCM43936CrNiMo4/1.6511EN24/817M404340

3: 4340 steel chemical composition
GradeCSiMnPSCrMoNi
43400.38-0.430.15-0.350.6-0.80.0350.040.7-090.2-0.31.65-2.0
36CrNiMo40.32-0.40.40.5-0.80.0350.0350.9-1.20.15-0.3 
EN240.36-0.440.1-0.40.45-0.70.0350.041.0-1.40.2-0.351.3-1.7
SNCM4390.36-0.430.15-0.350.6-0.90.030.030.6-1.00.15-0.31.6-2.0
 
4: 4340 steel mechanical properties  
  The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as normalized, tempered, QT. More details, kindly contact us.

5: 4340 steel overviews
SizeRoundDia 6-1200mm
Plate/Flat/BlockThickness:6mm-500mm
Width:20mm-1000mm
Heat treatmentNormalized ; Annealed ; Quenched ; Tempered
Surface conditionBlack; Peeled; Polished; Machined; Grinded; Turned; Milled
Delivery conditionForged; Hot rolled; Cold drawn
TestTensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc. 
Payment termsT/T;L/C;/Money gram/ Paypal
Trade termsFOB; CIF; C&F; etc..
Delivery time30-45 days
Application4340 alloy steels are used for aircraft landing gear, automotive, oil and gas drilling, warm and cold forming, machine building, transfer systems like power transmission gears and shafts, general engineering industries and structural use applicatios such as heavy duty shafts, gears, axles, spindles, couplings, pins, chucks, molds and so on.


 
6: Delivery condition
For hot forged rolled bar, usually the delivery condition is hot forged or rolled, annealed/QT, rough turned/Black surface.
For hot forged or hot rolled bar, usually the delivery condition is hot rolled, annealed/QT, Black surface.
For hot forged plate, usually the delivery condition is hot forged, annealed/QT, milled surface/Black surface
For hot rolled plate, usually the delivery condition is hot rolled, annealed/QT, black surface.


Forged Steel Bar AISI 4140, 4340, 8620, 4320, 52100

Hunan Qilu Industrial Co., Ltd has the capacity to forge round steel, steel flat, square steel, module, shaft and roller, etc. The main specifications of the products include Φ80-1000mm forging materials and 80-1200mm square billets and which the maximum piece weight can reach 50T.


Forged Steel Bar AISI 4140, 4340, 8620, 4320, 52100


Forged Steel Bar AISI 4140, 4340, 8620, 4320, 52100

Hunan Qilu Industrial Co., Ltd were already engaged in exporting steel for 11 years, could supply a great variety of hot forged, hot rolled and cold drawn Steels,  including engineering steel, cold work tool steel, hot work tool steel, plastic mold steel, spring steel, high speed steel, stainless steel etc., besides Qilu Industrial also has their own heating treatment shop and machining shop to provide heating and cutting service.

Since 2008 year, Hunan Qilu Industrial has the right to export all FORGED STEEL behalf of Qilu Speical Steel Co.,ltd which is specialized in smelting and forging of special steel since 1965 year, now Qilu special steel is one of the biggest manufacturer of forged product in China.The forged products are used in Automotive, Aerospace, Power Generation, Oil & Gas, Transportation and Industrial. We already set up the warehouse in Wuxi and Dongguan city, more than 20000 tons ex-stock could be supplied with kinds of size.

Qilu Industrial is the professional one-stop steel manufacturer, stockist and exporter in China, our customers spread all over the world, include West Europe, North America, South America, Asia, Middle Asia, Africa, Australia, etc.

Forged Steel Bar AISI 4140, 4340, 8620, 4320, 52100



Forged Steel Bar AISI 4140, 4340, 8620, 4320, 52100

The company owns advanced special steel smelting facilities and forging processing equipments, the main steel-making equipment include 2 sets of 50t ultra-high power electric arc furnaces,2 sets of 60t LF refining furnaces,1 set of 60t vacuum degassing refining furnace and 4 sets of 1-20t electroslag re-melting furnaces.
The main forging equipments mainly include:3 sets of 5t electro-hydraulic hammers, 1 set of high-speed forging units of 800t,1600t,2000t and 4500t respectively.


Forged Steel Bar AISI 4140, 4340, 8620, 4320, 52100



Forged Steel Bar AISI 4140, 4340, 8620, 4320, 52100



Forged Steel Bar AISI 4140, 4340, 8620, 4320, 52100Forged Steel Bar AISI 4140, 4340, 8620, 4320, 52100
 
Any interests in our company and products, please feel free to contact us for quotation. We warmly welcome you to our factory.

Hunan Qilu Industrial CO., LTD
Web: qilusteel.en.made-in-china.com 
 
Tel: 86-731-85185769   
Fax: 86-0731-85185771

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