AISI 4140 Scm440 42CrMo4/1.7225 En19/709m40 Forging Alloy Round Steel

Basic Info.

Model NO.	AISI 4140
Special Use	Wear Resistant Steel, Free Cutting Steel, Mold Steel, Engineering Steel
Application	Structural Steel Bar
Quality Inspection	Ut, Chemical Composition, Physical Properties/SGS
Experience	15years
Certificate	ISO, ABS, BV, CCS, Dnv, Lr, Gl, Mill Certificate
Delivery Condition	Forged/Hot Rolled/Cold Drawn
Other Type 3	Spring Steel, High Speed Steel, Stainless Steel
Other Type 4	Mold Steel, Free Cutting Steel, Cold Heading Steel
Other Type 2	Hot Work Tool Steel, Plastic Mold Steel
Other Type 1	Engineering Steel, Cold Work Tool Steel
Ut Standard	Sep 1921-84 D/D
Ex-Stock	Yes
Non-Metallic Inclusiton	ASTM E45
Grain Size	ASTM E112
Payment Term	30% Tt Deposit, Balance Against Bl Copy
Length	3-5.8m, or as Per Request
Heat Treatment	Annealed/Normalized/Q+T
Transport Package	in Loose 20′ Container or 40′ Container
Specification	DIA 6-1200
Trademark	QILU
Origin	China
HS Code	722840
Production Capacity	50000metric Tons/Year

Product Description

AISI 4140 Scm440 42CrMo4/1.7225 En19/709m40 Forging Alloy Round Steel

1: AISI 4140 steel introduction
AISI 4140 is defined as a low alloy steel which has 1% Cr-Mo as strengthening alloy elements.Compared with AISI 4130, it has a higher carbon content with good balance of strength, toughness ,abrasion and impact resistance and heat treatment capabilities,but poor in weldability characteristics.AISI 4140 is generally supplied in quenched and tempered condition with hardness 28-32HRC 2: AISI 4140 Steel equivalent

Country	China	Japan	Germany	USA	British
Standard	GB/T 3077	JIS G4105	DIN (W-Nr.)EN 10250	AISI/ASTMASTM A29	BS 970
Grade	42CrMo	SCM440	42crmo4/1.7225	4140	EN19/709M40

3: AISI 4140 steel chemical composition

Grade	C	Si	Mn	P	S	Cr	Mo	Ni
42CrMo	0.38-0.45	0.17-0.37	0.5-0.80	≤0.035	≤0.035	0.9-1.2	0.15-0.25	-
SCM440	0.38-0.43	0.15-0.35	0.6-0.85	≤0.035	≤0.04	0.9-1.2	0.15-0.30	-
42crmo4/1.7225	0.38-0.45	≤ 0.4	0.6-0.9	≤0.025	≤0.035	0.9-1.2	0.15-0.30	-
4140	0.38-0.43	0.15-0.35	0.75-1.00	≤0.035	≤0.04	0.8-1.1	0.15-0.25	-
EN19/709M40	0.35-0.45	0.15-0.35	0.5-0.80	≤0.035	≤0.035	0.9-1.5	0.2-0.40	-

4: AISI 4140 steel mechanical properties(for guidance only)

Grade	Tensile strength σb(MPa)	Yield strength σs (MPa)	Elongation δ5 (%)	Reduction ψ (%)	Impact Value Akv (J)	Hardness
4140	≥1080	≥930	≥12	≥45	≥63	28-32HRC

5: AISI 4140 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	AISI 4140 steel finds many applications as forgings for the aerospace,oil and gas,automotive, agricultural and defense industries etc.Typical applications for 4140 steel uses include:forged gears,spindles,fixtures,jigs,collars,Axles,conveyor parts,crow bars,logging parts,shafts,sprockets,studs,pinions,pump shafts, rams, and ring gears etc

6: Delivery conditionFor hot forged or hot rolled bar, usually the delivery condition is hot forged or rolled, annealed, rough turned.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.


Any interests in our company and products, please feel free to contact us for quotation. We warmly welcome you to our factory.
Hunan Qilu Industrial CO., LTDWeb: qilusteel.en.made-in-china.com