708m40 / 709m40 / En19 / 42crmos4 Steel / En19 Alloy Steel Round Bar

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Technique: Hot Rolled
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
• Alloy: Alloy
• Special Use: Mold Steel, Free Cutting Steel, Cold Heading Steel
• Model NO.: 708M40 / 709M40 / EN19 / 42CrMoS4
• Grade: En19 Alloy Steel
• Equivalent Grades: En19 Scm440 42CrMo4
• Delivery Condition: Hot Rolled / Qt
• Commodity: En19 Alloy Steel Round Bar
• MOQ: 1ton Per Size
• Length: 6m or as Required
• Inspecttion: Ut Sep 1921 C/C
• AISI 4140 Hot Rolled Steel Sizes: 16-310mm
• AISI 4140 Forged Steel Sizes: 250-1000mm
• AISI 4140 Mechanical Property: En19 Hradness
• AISI 4140 Qt: Quenched and Tempered Supplied
• Company: Laiwu Xincheng Metal Co., Ltd
• Key Words: En19 Steel
• Types: En19 Steel Round Bar
• Supply: En19 Steel Round Bars in Stocks
• Transport Package: Seaworthy Packing
• Specification: M12-M310
• Trademark: Laiwu Xincheng
• Origin: China
• HS Code: 72283090
• Production Capacity: 3000tons/Month

Product Description

708M40 / 709M40 / EN19 / 42CrMoS4 Steel / EN19 Alloy Steel Round Bar
EN19  ALLOY STEEL ROUND BAR
EN19 DIAMETER FROM 16MM TO 310MM
AISI 4140 SAE 4140 EN19 SCM440 42CRMO4 ALLOY STEEL ROUND BARS

AISI 4140 is a chromium-molybdenum alloy steel. The chromium content provides good hardness penetration, and the molybdenum content ensures uniform hardness and high strength. AISI 4140 chrome-molybdenum steel can be oil hardened to a relatively high level of hardness. The desirable properties of the AISI 4140 include superior toughness, good ductility and good wear resistance in the quenched and tempered condition.

1. EN19 equivalent material
♦JAPAN♦ : JIS SCM440 alloy steel 
♦GERMANY♦ : DIN WN-r 1.7255 / 42CrMo4 steel alloy
♦CHINA♦ :  GB 42CrMo steel
♦BRITISH♦ : BS 708M40

2.Supply Size range for EN19 steel bar
Hot Rolled EN19 steel bar: Ø16mm-310mm
Forging EN19 steel bar: Ø250mm-1000mm
Cold drawn EN19 steel bar:Ø12-100mm

3.EN19 and equivalent grades chemical composition

Standard	Grade	C	Si	Mn	P	S	Cr	Mo
ASTM A29	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
	42CrMo4	0.38-0.45	≤ 0.4	0.6-0.90	≤ 0.025	≤ 0.035	0.9-1.2	0.15-0.30
EN10083	1.7225
JIS G4105	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
GB 3077	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
BS 970	EN19	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.EN19 Steel Bar Quality control:
1. Melting Process: EAF/BOF+LF+VD resulting in ingots
2. Both ends cut by saw
3. Ratio of forging:minimum 3:1
4. Grain size of final product: according to ASTM E112 more than 5,preferred more than 8
5. Ultrasonic test: As per SEP1921 Class C/c

5.EN19 Steel Machining ability:
AISI 4140 has good machinability. Operations such as turning, hobbing, drilling, sawing, broaching, tapping and milling can be easily performed using the recommendations provided by the machine's manufacturer for ideal tool type-feeds and speeds.

6.EN19 Futhur Heat Treatment we can supply:
There are various heat treatments of the AISI 4140 Chrome-Molybdenum High Tensile Steel which are:
Forging
Stress relieving
Annealing
Normalizing
Nitriding
Tempering
Flame and induction hardening
Hardening

7.Application of AISI 4140/EN19 Steel :
Shaft, Crankshaft,Bolt & fasteners,Machinery Parts, Gear, Milling Spindle, Slide, Steel Collet,Steel Converyor and Roll,Steel Ejector,Steel Piston Rod, Drill Collar,Steel Stub,axles collets guides and so on.

8.Our quality team:
We company have good QC inspection tear and full set of inspect equipment including: UT test machine, Tensile testing machine,Hardness testing machine,Dimensional measuring instrument,f,spectrometer,Metallographic microscope and so on, so that we can always supply good mateterials for various projects and industries .

9.Delivery time: 
7-15 days for stocks items.
15-30 days for new production items.

10.Payment term: TT or LC.

11.MOQ:1 ton per size


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We can export and supply our AISI 4140 EN19 42CRMOS4  steel bars for countries such like :
Argentina,Australia,Bahrain,Bangladesh,Belgium,Bolivia,Brazil,Bulgaria,Burma,Canada,Chile,Colombia,Costa Rica,Djibouti ,Dominica Rep.,Ecuador ,Egypt ,Ethiopia,Germany,Guatemala,Honduras,Hongkong,India ,Indonesia ,Israel,Italy ,Korea,Kuwait,Malaysia,Mexico ,Netherlands ,New Zealand,Nigeria,Pakistan ,Peru ,Philippines,Poland ,Portugal,Romania,Russia ,Saudi Arabia ,Singapore ,South Africa,Spain,Sri Lanka ,Tanzania ,Thailand ,Trinidad and Tobago ,Turkey ,United Arab Emirates ,United States of America ,Vietnam ,Zimbabwe ,and so on.