En10083 En10250 En19 Round Bars

• Customization: Available
• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Model NO.: KM-20240419
• Technique: Hot Rolled
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
• Surface Treatment: Oils or Black Paintings
• Alloy: Alloy
• Special Use: Mold Steel, Cold Heading Steel
• China Grade: GB 3077,42CrMoA
• USA Grade: ASTM A29 4140/4142
• Japan Grade: JIS G4105 Scm440
• Packaging: in Wooden Boxes
• Delivery Time: 30~50 Days
• Processing Method: Hot Rolled or Cold Drawn or Forging
• Transport Package: Seaworthy Export Package in Bundles.
• Specification: 16mm~130mm
• Trademark: KINGMETAL
• Origin: China
• HS Code: 7228309000
• Production Capacity: 3000 Tons Per Month

Product Description

EN10083 EN10250 EN19 Round Bars

Equivalent grades of EN19 round bars:

AISI 4140, SAE 4140, 42CrMo4, 42CrMoS4, Din 1.7225

EN19 Chemical Composition:

EN19 is European grade mainly from EN10083 and EN10250 standard,while EN19 is British grade from BS970-1955 standard.Although they are very close in chemical composition, they are different grades and can be considered eqnivalent grades.Through technical adjustments, we can adjust their components to the corresponding effective range in the table below, so that they can be used instead.

42CrMo4	EN19	Adjustment for EN19 and 42CrMo4
C:0.38-0.45%	C:0.35-0.45%	C:0.38-0.45%
Si:≤ 0.4%	Si:0.10-0.35%	Si:0.15-0.35%
Mn:0.6-0.9%	Mn:0.5-0.8%	Mn:0.6-0.8%
Cr:0.9-1.2%	Cr:0.9-1.5%	Cr:0.9-1.2%
Mo:0.15-0.30%	Mo:0.2-0.40%	Mo:0.2-0.3%

China/GB 3077:42CrMoA

USA/ASTM A29:4140/4142

Japan/JIS G4105:SCM440

Our Size Range Of 42CrMo4 Round Steel Bars:

16mm, 18mm, 20mm, 22mm, 23.5mm, 24mm, 25mm, 26mm, 27mm, 28mm, 30mm, 32mm, 34mm, 35mm, 36mm, 37mm, 38mm, 40mm, 42mm, 45mm, 46.5mm, 47mm, 50mm, 51mm,53mm, 56mm, 60mm, 63mm, 65mm, 70mm, 75mm, 78mm, 80mm, 85mm, 90mm, 95mm, 100mm, 105mm, 110mm, 115mm, 120mm, 125mm, 130mm.

Grades We Manufacture in addition to 42CrMo4 Round Bars:

MS, SAE 1018, IS 2062, A105, 1008, SAE 1010, SAE 1015, C15, C18, C20, 1020, C22, 1022, C25, 1025, C30, 1030, C35, 1035, 35C8, S35C, C40, 1040, C45, 45C8, 1045, CK45, C50, 1050, C55, 55C8, 1055, C60, 1060, C70, 41Cr4, 40Cr4, 40Cr1, En18, En18D, SAE 1541, SAE 1536, 37Mn2, 37C15, En15, SAE 1141, LF2, EN19, SAE 4140, 42CrMo4, EN24, EN31, SAE 52100, 20MnCr5, 8620, EN1A, EN8, EN8D, EN9, ST 52.3, EN42, En353, SS 410, SS 202, SS 304, SS 316 and other grades as per customer requirement.


Maybe you are also interested in below specification:

 

1.Supply Form & Size & Tolerance

Hot rolled bar:Φ6-Φ130mm,Length:3000-10000mm

Hot Forged round bar:Φ130-Φ1000mm,Length:3000-10000mm

Plate/Sheet:Thickness :20-400mm xWidth:80-1000mm,Length:2000-6000mm

Flat bar/Blcoks:Thickness :120-800mm xWidth:120-1500mm,Length:2000-6000mm

Surface Finish	Black-Forged	Black-Rolled	Turned	Grinding	Polished	Peeled	Cold Drawn
Tolerance	(0,+5mm)	(0,+1mm)	(0,+3mm)	Best h9	Best h11	Best H11	Best H11

2.Chemical Composition

Grade	C	Si	Mn	Cr	Mo	P	S
42CrMo4/1.7225	0.38-0.45	≤ 0.4	0.6-0.9	0.9-1.2	0.15-0.3	≤ 0.025	≤ 0.035
42CrMoS4/1.7227	0.38-0.45	≤ 0.4	0.6-0.9	0.9-1.2	0.15-0.3	≤ 0.025	0.02-0.04

3.Relevant Standards

USA	UK	China	Japan	France	Russia
4140	EN19/708M40	42CrMo	SCM440	42CD4	42HM

4. Mechanical Property

Diameter d mm	≤ 16	16-40	40-100	100-160	160-250
Thickness t mm	< 8	8-20	20-60	60-100	100-160
Yield Strength Mpa	≥900	≥750	≥650	≥550	≥500
Tensile Strength Mpa	1100-1300	1000-1200	900-1100	800-950	750-900
Elongation, %	≥10	≥11	≥12	≥13	≥14
Reduction of area ,%	≥40	≥45	≥50	≥50	≥55
impact	≥30	≥35	≥35	≥35	≥35

5.Forging

42CrMo4 forging temperature:900 - 1100°C ,cooling as slowly as possible in still air or in sand after forged.

6.Heat Treatment

• Normalizing:  850 - 880°C,Cooling in air
• Soft Annealing:680 - 720°C,Cooling in furnace
• Stress relieve:450-650°C,Cooling in air
• Hardening:820 - 880°C,oil or water quench
• Tempering:540 - 680°C,Cooling in air

7.Surface Hardness

• Treated to improve shearability (+S):Max 255HB
• Soft annealed (+A):Max 241HB
• Pre Quenched and tempered:280-320HB
• Flame or induction hardening:Min 53HRC

NORMAL HARDENABILITY +H (850°C - hardness HRC - distance mm)
Distance mm	1.5	3	5	7	9	11	13	15	20	25	30	35	40	45	50
HRC Min	53	53	52	51	49	43	40	37	34	32	31	30	30	29	29
HRC Max	61	61	61	60	60	59	59	58	56	53	51	48	47	46	45

8.Application

42CrMo4 has high strength and wear-resistance,widely used in many industries.

Components with high strength and toughness for tools, automotive parts,mechanical engineering, armament components,such as geer wheels,pinions,connecting rods,parts for mechanical engineering.

Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts,gears