Steel Round Bar 4130 1045 4140 1040

Basic Info.

Model NO.	Steel Round Bar 4130 1045 4140 1040
Special Use	Engineering Steel
Application	Die Steel Bar
Process	Eaf+Lf+Vd+Forged+Heat Treatment(Optional)
Technology	Hot Rolled/ Forged/ Cold Drawn
Form	Round Bars/ Flat Bar / Blocks/ Tube
Non-Metallic Inclusiton	ASTM E45
Certificate	ISO/ Mill Certificate
Experience	15 Years Manufacturer Experience
Test	Ensile Strength, Yield Strength, Elongation
Surface	Black; Peeled; Polished; Machined; Grinded; Turned
Delivery Date	30 Days
Ex-Stock	Yes
Grain Size	ASTM E112
Ut Standard	Sep 1921-84 D/D
Payment Term	30% Tt Deposit, Balance Against Bl Copy
Length	3000-5800mm
Heat Treatment	Normalized;Annealed ;Quenched ;Tempered/Qt
Transport Package	Seaworthy Package
Specification	DIA 100-1200
Trademark	Qilu
Origin	China
HS Code	722840
Production Capacity	500, 000tons/Year

Product Description

Steel Round Bar 4130 1045 4140 10401: 4130 steel introductionAISI 4130 alloy steel is a medium carbon, low alloy steel in ASTM A29 standard. ASTM 4140 steel is also commonly referred to as a chromoly steel, or chrome moly steel, containing nominally 0.28-0.33% Carbon, 0.8-1.1% Chromium and 0.15-0.25% Molybdenum. It is similar to 4140 steel which has a higher carbon level (0.28-0.33%), giving 4130 material improved weldability, at the expense of through thickness strength. With the proper heat treatment it is also readily machined. Annealing ASTM 4130 alloy steel offers excellent ductility. AISI 4130 steel is usually supplied as round bar commonly in the hardened and tempered condition. 2: 4130 Steel equivalent

Country	British	USA	Japan	BS
Standard	BS 970	ASTM A29	JIS G4105	EN10083
Grade	708A25/708M25	4130	SCM430	25CrMo4/1.7218

3: 4130 steel chemical composition

Grade	C	Si	Mn	P	S	Cr	Mo	Ni
4130	0.28-0.33	0.15-0.35	0.4-0.6	0.035	0.04	0.8-1.1	0.15-0.25	/
25CrMo4	0.22-0.29	0.4	0.6-0.9	0.025	0.035	0.9-1.2	0.15-0.30	/
SCM430	0.28-0.33	0.15-0.35	0.6-0.85	0.03	0.03	0.9-1.2	0.15-0.30	/

4: 4130 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: 4130steel 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	4130 are used for Commercial aircraft, aircraft engine mounts, military aircraft, automotive, machine tools, hydraulic tools, auto racing, aerospace, oil and gas industries as forged valve bodies and pumps, agricultural and defense industries etc.

6: Delivery conditionFor hot forged bar, usually the delivery condition is hot forged, annealed/QT rough turned/Black surface.For 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 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