ASTM 4118 Scm420 18crmo4 1.7243 Steel

• Customization: Available
• Type: Alloy Steel Bar
• Standard: AISI, ASTM, DIN, JIS
• Model NO.: 4118
• Composition: Ferrous Steel Scrap
• Technique: Hot Rolled/Forged
• Shape: Bar
• Surface Treatment: Polished
• Special Use: Mold Steel
• Application: Die Steel Bar
• Heat Treatment: Annealed
• Payment Term: 30% Tt Deposit, Balance Against Bl Copy
• Length: 3000-5800mm
• Ex-Stock: Yes
• Delivery Date: 40 Days
• Ut Standard: Sep 1921-84 D/D
• Grain Size: ASTM E112
• Non-Metallic Inclusiton: ASTM E45
• Transport Package: Seaworthy Package
• Specification: Dia 8-1000
• Trademark: Qilu
• Origin: China
• HS Code: 722840
• Production Capacity: 500, 000tons/Year

Product Description

ASTM 4118 | SCM420 | 18CrMo4 | 1.7243 Steel

1: 4118 steel introduction

ASTM 4118 Steel one steel grade in ASTM A29 standard. ASTM 4118 steel is one of popular alloy steel used for engineering purpose, like fasteners, high pressure pipe and more advanced carburized parts, such as gear, shaft, etc. which work in the noncorrosive medium and temperature below 250 ºC, working with nitrogen hydrogen mixture in the medium.

The quench-hardening ability of AISI 4118 steel is higher, no temper brittleness. The weldability of AISI 4118 steel is also very good, with excellent machining or cutting properties. The tendency of cold crack formation is very small, but machinability and cold straining plasticity is still good.

2: 4118 Steel equivalent

Country	USA	Europe	Japan
Standard	ASTM A29	DIN & BS EN 10084	JIS G4105
Grades	4118	18CrMo4/1.7243	SCM420

 
3: 4118 steel chemical composition

Standard	Grade	C	Mn	P	S	Si	Cr	Mo
ASTM A29	4118	0.18-0.23	0.70-0.90	0.35	0.35	0.15-0.35	0.4-0.6	0.08-0.15
EN 10084	18CrMo4/1.7243	0.15-0.21	0.60-0.90	0.025	0.035	0.4	0.9-1.2	0.15-0.25
JIS G4105	SCM420	0.18-0.23	0.60-0.85	0.03	0.03	0.15-0.35	0.9-1.2	0.15-0.30

 
4: 4118 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: 4118 steel overviews

Size	Round	Dia 8-1000mm
	Plate/Flat/Block	Thickness 10mm-1500mm
		Width 200mm-3000mm
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	ASTM 4118 case hardening alloy steels are widely used as gear components of all kind and cog wheels. Open die steel forgings for general engineering purposes.

 
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