• Wuxi Jinlai Mechanical Processing Co., Ltd.
    John Fairbank
    stainless steel strip with good quality and the Sales clerk service is very good.i like this company i hope can work with your again
  • Wuxi Jinlai Mechanical Processing Co., Ltd.
    Shipment speed is very fast, and the requirements can meet me. Salesman is very responsible.
  • Wuxi Jinlai Mechanical Processing Co., Ltd.
    Fierce Urchin
    good ,the galvanized steel coil quality is good and i donot see the broken on them.that is nice
Contact Person : Jo Yuan
Phone Number : +86-18706170710
WhatsApp : +8618706170710

Dimensional Stable EN19 Mild Steel Bright Bar Structual Various Size For Gears Shafts

Place of Origin: CHINA
Brand Name: JIN LAI
Certification: ISO
Model Number: 4140
Minimum Order Quantity: 10 tons
Price: Negotiable based on the quantity
Packaging Details: atandard seaport packing or as customer's requirement
Delivery Time: within 15 days after received the deposit
Payment Terms: T/T, Western Union, L/C
Supply Ability: 10000 tons per month
Product Details
Standard: AISI, ASTM, BS, DIN, GB, JIS Technic: Hot Rolled
Type: Carbon Steel Bar Length: 1-12m
Shape: Round Surface Treatment: As Custom Request
Port: Shanghai Application: Structual Steel Bar
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mild steel round bar


cold drawn round bar

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Product Description

high stress Carbon Alloy Steel Round Bar 4140 heavy duty industrial


Alloy Bar Shape Ally Bar Grades/Types Alloy Bar Sizes
Alloy Flat Bar Grade: 4140
Types: Hot Rolled, Cold Finished
Thicknesses: 0.109" thru 4"
Widths: up to 14.625"
Alloy Hexagon Bar Grade: 4140
Type: Cold Finished
Diameter: 0.25" thru 4"
Stock Lengths: 11' thru 20'
Alloy Round Bar Grades: 4130, 4140, 4140/42, 4142, , 4150, 41L40, 4340, 86L20, E4340, ETD150
Types: Annealed, Cold Finished, Forged, Hot Rolled, Q & T, DGP, TGP
Diameter: 0.125" thru 24"
Stock Lengths: 10' thru 24'
Alloy Square Bar Grades: 4140, 8620
Type: Hot Rolled, Cold Finished
Diameter: 0.1875" thru 6"
Stock Lengths: 11' thru 24'


4140 Alloy Steel Round, is an cold drawn annealed steel of relatively high hardenability with its chromium content provides good hardness penetration, and the molybdenum imparts uniformity of hardness and high strength. 4140 Alloy Steel Round responds well to heat-treatment and is relatively easy to machine in the annealed condition. 4140 Alloy Steel Round has good strength and wear resistance, excellent toughness, coupled with good ductility, and the ability to resist stress at elevated temperatures.


Round, hexagon, square or flat, our alloy bars are available in a diverse selection of grades and finishes processed to meet your exact requirements. Whether you require full-length alloy bars or small, cut pieces, we have the product on hand and processing capabilities to turn around your order quickly.



AISI 4140 also known as EN19 comes treated in the annealed as rolled or even T condition. We can offer AISI 4140 in bar form from stock, rolled and bright drawn. It is renown for its wear resistance and where high strength properties is required. Suitable for gears, shafts, spindles, etc. Frequently used within the gas and oil industry. For improved weldability consider using 4130.
The 41xx family of steel include chromium and molybdenum and are often referred to as chromoly steel or chrome-moly. Chromoly steels have an excellent strength to weight ratio but do not contain sufficient quantities to provide the levels of corrosion resistance found in stainless steels. These steel are often used in aircraft parts also frequently used within the gas and oil industry.



AISI 4140 Rounds Hot Rolled

Size (mm) 40 50 60 70 75 80 85 90 95 100 105 110
115 120 125 130 140 150 160 170 180 190 200 220
240 260 280 300 320 350 400          


AISI 4140 Rounds Bright Drawn

Size (inches) 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 15/16 1 1 1/8 1 1/4 1 3/8 1 1/2
1 5/8 1 3/4 2 2 1/4 2 1/2 2 3/4 3 3 1/2 4          
Size (mm) 10 12 15 16 18 20 25 30 35 40 45 50 60