D2 H13 1045 4340 4140 P20 Rolled Forged Round Steel Bar

Basic Info.

Model NO.	D2 H13 1045 4340 4140 P20
Special Use	Engineering Steel
Application	Structural Steel Bar
Technology	Hot Rolled/ Forged/ Cold Drawn
Heat Treatment	Normalized;Annealed ;Quenched ;Tempered
Process	Eaf+Lf+Vd+Forged+Heat Treatment(Optional)
Form	Round Bars/ Flat Bar / Blocks/ Tube
Certificate	ISO/ Mill Certificate
Experience	15 Years Manufacturer Experience
Test	Ensile Strength, Yield Strength, Elongation
Surface	Black; Peeled; Polished; Machined; Grinded; Turned
Ut Standard	Sep 1921-84 D/D
Delivery Date	30 Days
Non-Metallic Inclusiton	ASTM E45
Grain Size	ASTM E112
Length	3000-5800mm
Ex-Stock	No
Payment Term	30% Tt Deposit, Balance Against Bl Copy
Transport Package	Seaworthy Package
Specification	DIA 90-600
Trademark	Qilu
Origin	China
HS Code	722840
Production Capacity	500, 000tons/Year

Product Description

D2 H13 1045 4340 4140 P20 Hot Rolled Forged Round Steel Bar1: 4340 steel introductionAISI 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

Country	Japan	Germany	Britain	USA
Standard	JIS G4103	EN10250	BS970	ASTM A29
Grade	SNCM439	36CrNiMo4/1.6511	EN24/817M40	4340

3: 4340 steel chemical composition

Grade	C	Si	Mn	P	S	Cr	Mo	Ni
4340	0.38-0.43	0.15-0.35	0.6-0.8	0.035	0.04	0.7-09	0.2-0.3	1.65-2.0
36CrNiMo4	0.32-0.4	0.4	0.5-0.8	0.035	0.035	0.9-1.2	0.15-0.3
EN24	0.36-0.44	0.1-0.4	0.45-0.7	0.035	0.04	1.0-1.4	0.2-0.35	1.3-1.7
SNCM439	0.36-0.43	0.15-0.35	0.6-0.9	0.03	0.03	0.6-1.0	0.15-0.3	1.6-2.0

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 overviews

Size	Round	Dia 6-1200mm
	Plate/Flat/Block	Thickness6mm-500mm
		Width20mm-1000mm
Heat treatment	Normalized ; Annealed ; Quenched ; Tempered
Surface condition	Black; Peeled; Polished; Machined; Grinded; Turned; Milled
Delivery condition	Forged; Hot rolled; Cold drawn
Test	Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc.
Payment terms	T/T;L/C;/Money gram/ Paypal
Trade terms	FOB; CIF; C&F; etc..
Delivery time	30-45 days
Application	4340 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 conditionFor 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 surfaceFor hot rolled plate, usually 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., 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.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.Hunan Qilu Industrial CO., LTDWeb: qilusteel.en.made-in-china.com