Scm420 18crmo4/1.7243 4118 708m20 20crmo Forged Rolled Qt Alloy Steel

• Customization: Available
• Standard: DIN, JIS, AISI, ASTM, GB, BS
• Technics: Forged
• Model NO.: Scm420 18crmo4/1.7243 4118 708M20 20CrMo steel
• Application: Structural Steel Bar
• Surface: Black; Peeled; Polished; Machined; Grinded; Turned
• Alloy: Alloy
• Special Use: Wear Resistant Steel, Free Cutting Steel, Mold Steel, Tool Steel, Die Steel
• Heat Treatment: Annealed, Qt
• Payment Term: 30% Tt Deposit, Balance Against Bl Copy
• Length: 3000-5800mm
• Ex-Stock: No
• Delivery Date: 30 Days
• Ut Standard: Sep 1921-84 D/D
• Grain Size: ASTM E112
• Non-Metallic Inclusiton: ASTM E45
• Form: Round Bars/ Flat Bar / Blocks/ Tube
• Process: Eaf+Lf+Vd+Forged+Heat Treatment(Optional)
• Technology: Hot Rolled/ Forged/ Cold Drawn
• Quality Inspection: Ut, Chemical Composition, Physical Properties, Mechan
• Test: Ensile Strength, Yield Strength, Elongation
• Certificate: ISO, ABS, BV, CCS, Dnv, Lr, Gl, Mill Certificate
• Experience: 15 Years Manufacturer Experience
• Transport Package: Seaworthy Package
• Specification: DIA 6-1200
• Trademark: Qilu
• Origin: China
• HS Code: 7228400000
• Production Capacity: 500, 000tons/Year

Product Description

Scm420 18crmo4/1.7243 4118 708M20 20CrMo Forged Rolled QT Alloy Steel



1:  18CrMo4 steel introduction
18CrMo4 is a low carbon case hardening steel which has at least 0.9Cr%,0.15%Mo as strengthening elements as per EN10084 standard.It has good process performance ,and has high strength when temperature at 500-550 °C.The oxidation resistance is deteriorated and the creep strength is remarkably lowered when temperature exceeds 550°C.The weldability of 18CrMo4 steel is also very good, with excellent machining or cutting properties.
 
2:  18CrMo4   Steel equivalent

Country	Japan	Germany	USA	British
Standard	JIS G4105/JIS G4103	DIN (W-Nr.) EN 10250	ASTM A29	BS 970
Grade	SCM420	18CrMo4/1.7243	4118	708M20

 
3:   18CrMo4   steel chemical composition

Grade	C	Si	Mn	Cr	Mo	P	S
18CrMo4/1.7243	0.15-0.21	≤ 0.4	0.6-0.9	0.9-1.2	0.15-0.25	≤ 0.025	≤ 0.035
18CrMoS4/1.7244	0.15-0.21	≤ 0.4	0.6-0.9	0.9-1.2	0.15-0.25	≤ 0.025	0.02-0.04

 
4:   18CrMo4   steel mechanical properties 

Diameter d mm	≤ 16	16-40	40-100
Yield Strength Mpa	≥835	≥685	≥590
Tensile Strength Mpa	1080-1370	930-1300	800-1150
Elongation, %	≥9	≥9	≥10
Reduction of area ,%	≥35	≥35	≥40
impact,J	≥25	≥31	≥31

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:   18CrMo4   steel overviews

Size	Round	Dia 6-1200mm
	Plate/Flat/Block	Thickness 6mm-500mm
		Width 20mm-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	18CrMo4 case hardening steel is widely in gear components of all kind and cog wheels. Open die steel forgings for general engineering purposes.High and medium pressure steam pipes, headers and superheaters.

 
6: Delivery condition
For hot forged bar, usually the delivery condition is hot forged, annealed rough turned/Black surface.
For hot rolled bar, usually the delivery condition is hot rolled, annealed, Black surface.
For hot forged plate, usually the delivery condition is hot forged, annealed, milled surface
For hot rolled plate, usually the delivery condition is hot rolled, annealed, 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., LTD
Web: qilusteel.en.made-in-china.com