China Steel Round Bar 4340 Forged Steel 1045 Steel Bar

D2 H13 1045 4340 4140 P20 Hot Rolled Forged Round Steel Bar1: 4340 steel introduction
AISI4340 steelis 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 shockand 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. AISI4340 alloy steelcan also be machined by all customary methods.2: 4340 Steel equivalentCountryJapanGermanyBritainUSAStandardJIS G4103EN10250BS970ASTM A29GradeSNCM43936CrNiMo4/1.6511EN24/817M404340
3: 4340 steel chemical compositionGradeCSiMnPSCrMoNi43400.38-0.430.15-0.350.6-0.80.0350.040.7-090.2-0.31.65-2.036CrNiMo40.32-0.40.40.5-0.80.0350.0350.9-1.20.15-0.3Semiconductor EN240.36-0.440.1-0.40.45-0.70.0350.041.0-1.40.2-0.351.3-1.7SNCM4390.36-0.430.15-0.350.6-0.90.030.030.6-1.00.15-0.31.6-2.0
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. If you want to know the properties, kindly contact the salesman.5: 4340 steel overviewsSizeRoundDia 6-1200mmPlate/Flat/BlockThickness
6mm-500mmWidth
20mm-1000mmHeat treatmentNormalized ;AnnealConstruction Equipment & Tools ed ;Quenched ;TemperedSurface conditionBlack; Peeled; Polished; Machined; Grinded; Turned; MilledDelivery conditionForged; Hot rolled; Cold drawnTestTensile 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/ PaypalTrade termsFOB; CIF; C&F; etc..Delivery time30-45 daysApplication4340 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, usuallyDrilling Rig the delivery condition is hot rolled, annealed/QT, black surface.
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.
Hunan Qilu Industrial Co., Ltdwere already engaged in exporting steel for 11 years, could supply agreat variety ofhot forged,hot rolledandcold 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 hasthe right to export allFORGED STEELbehalf of Qilu Speical Steel Co.,ltdwGift Box & Bag hich isspecialized in smelting and forging of special steelsince 1965 yeColor Card & Color Comparator ar, now Qilu special steel isone of the biggest manufacturer of forged product in China.The forged productsare 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.The company owns advanced special steel smelting facilities and forging processing equipments, the main steel-making equipment include 2sets of 50t ultra-high power electric arc furnaces,2 sets of 60t LF refining furnaces,1 set of 60t vacuum degassing refining furnace and 4sets of 1-20t electroslag re-melting furnaces.
The main forging equipments mainly include:3 sets of 5t electro-hydraulic hammers, 1set of high-speed forging units of 800t,1600t,2000t and 4500t respectively.
Hunan Qilu Industrial CO., LTD
Web: www.qilucs.comTel: 86-731-85185768
Fax: 86-0731-85185771