AISI 4140 Scm440 En19 42CrMoA Hot Rolled Forged Q&T Steel Round Bars

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Technique: Hot Rolled
• Application: Structural Steel Bar
• Surface Treatment: Black
• Alloy: Alloy
• Model NO.: AISI 4140 Scm440 En19 42CrMoA
• Grade: En19 42CrMo, 4140. Scm440
• Length: 6m or as Required
• MOQ: 2tons
• Condition: Hot Rolled /Forged /Cold Drawn/Q&T
• Transport Package: by Bundles 2-4tons
• Specification: M12-M310
• Trademark: Laiwu Xincheng
• Origin: China
• HS Code: 72283090
• Production Capacity: 3000tons/Month

Product Description

AISI 4140 SCM440 EN19 Hot rolled steel round bar

AISI 4140 steel is a alloy structural steel, which is used for engineering structural, like high tensile shafts, bolts and nuts, gears, pinions and spindles. Locomotive traction with the big gear, supercharger drive gear, pressure vessel, rear axle, gear load of connecting rod and a spring clip.

1.Supply Size range
Hot Rolled 4140 steel bar: Ø16mm-310mm
Forging 4140 steel bar: Ø260mm-1000mm
Q&T (Quenched&tempered):Ø16-1000mm
Cold drawn bright steel bars : 5mm to 120mm

2.Equivalent Grades

GB,YB	JIS	DIN(W-Nr.)		BS	NF
42CrMo	SCM440/(SCM4)	42CrMo4-1.7225	4140	708M40/709M40/708A42/EN19	42CD4

 

3.Chemical composition

ASTM A29/29M	C	Si	Mn	Cr	Mo	P	S
4140	0.38~0.43	0.15~0.35	0.75~1.00	0.80~1.10	0.15~0.25	≤0.035	≤0.040
DIN WN-r	C	Si	Mn	Cr	Mo	P	S
1.7225	0.38~0.45	≤0.40	0.60~0.90	0.90~1.20	0.15~0.30	≤0.035	≤0.035
GB/T	C	Si	Mn	Cr	Mo	P	S
42CrMo	0.38~0.45	0.17~0.37	0.50~0.80	0.90~1.20	0.15~0.25	≤0.030	≤0.030
BS	C	Si	Mn	Cr	Mo	P	S
708M40	0.36~0.44	0.10~0.35	0.70~1.00	0.90~1.20	0.15~0.25	≤0.035	≤0.035
JIS	C	Si	Mn	Cr	Mo	P	S
SCM440	0.38~0.43	0.15~0.35	0.60~0.85	0.90~1.20	0.15~0.30	≤0.030	≤0.030

4.Heat Treatment for 4140 steel round bars
4140 alloy steel material is a high quality Quenched and Tempered Alloy Structural steel, It belong to the high quality medium carbon alloy steel, Oil Quenched & Tempered Hardenss is 28-34 HRC.4140 Annealing delivery hardenss less than 250HB

Heat treatment of aisi 4140 steel 
Annealing
AISI 4140 alloy steel is annealed at 872°C (1600°F) followed by slowly cooling in the furnace.
Tempering
AISI 4140 alloy steel can be tempered at 205 to 649°C (400 to 1200°F) depending upon the desired hardness level. The hardness of the steel can be increased if it has lower tempering temperature
Hardening
AISI 4140 alloy steel can be hardened by cold working, or heating and quenching.

5.Packing and Delivery

Packing Details:
1.One bundle including one heat no., one size only.
2.Bundle weight 2 tons to 4tons. 
3.At least 3-4 metal straps on each bundle to make it strong enought by loading and unloading. 
4.Each bundle should carry label which will show the heat number, size, quantity in pcs, weight , origin or as your requirements. 

 

Delivery Method
1.Shipment canbe made by 20' container, 40' container or bulk vessel. 
2.One 20' container can load max 27tons, 40' container can load max 28.5tons, and bulk vessel doesn't have limit for weights. 
3.We can load max length of 6000mm to 20' container, and 12000mm length to 40' containers, and bulk vessel doesn't have limit for lenths

 

Terms:
1.MOQ: one bundle, weight about 2-4tons
2.Delivery time : 7-10 days for stocks, and 30 days for new production items. 
3.Price term: EXW, FOB, CFR, CIF 
4.Payment term: By TT or LC

 

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