AISI/SAE 4140 Carbon Steel Bar
Classification :
Carbon Steel Bar
Keyword :
Carbon Steel Bar
PRODUCT DETAILS
AISI/SAE 4140 Carbon Steel Bar Description
4140 is a 1% chromium-molybdenum medium hardenability general-purpose high-strength steel, usually hardened and tempered in the tensile range of 850-1000 Mpa (condition T). 4140 now have improved machinability, which greatly increases feed and/or speed, while extending tool life without affecting mechanical properties. The prehardening and tempering 4140 can be further case hardened by flame or induction hardening and nitriding.
Product Parameters
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Product Name |
AISI/SAE 4140 Carbon Steel Bar | |||
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Standard |
EN/DIN/JIS/ASTM/BS/ASME/AISI, etc. |
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Common Round Bar Specifications |
3.0-50.8 mm, Over 50.8-300mm |
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Flat Steel Common Specifications |
6.35x12.7mm, 6.35x25.4mm, 12.7x25.4mm |
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Hexagon Bar Common Specifications |
AF5.8mm-17mm |
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Square Bar Common Specifications |
AF2mm-14mm, AF6.35mm, 9.5mm, 12.7mm, 15.98mm, 19.0mm, 25.4mm |
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Length |
1-6meters, Size Accept Custom |
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Diameter(mm) |
Hot Rolling Round Bar |
25-600 |
Cold Rolling Square Bar |
6-50.8 |
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Hot Rolling Square Bar |
21-54 |
Cold Rolling Hexagon Bar |
9.5-65 |
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Cold Rolling Round bar |
6-101.6 |
Forged Rebar |
200-1000 |
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Surface Process |
Bright, Polished, Black |
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Other Services |
Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc. |
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Chemical Composition
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Grade |
Mn |
S |
C |
P |
Si |
Cr |
Ni |
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AISI 4140 |
0.75-1.00 |
0.035 |
0.38-0.43 |
0.035 |
0.20-0.35 |
0.8-1.1 |
0.15-0.25 |
Mechanical Properties
|
Grade |
Tensile Strength psi |
Yield Strength psi |
Elongation % |
Hardness HRC |
|
AISI 4140 |
100k |
80k |
20 |
18-22 |
Scope of Application
SAE 4140 are widely used in most industrial sectors, with a wide range of applications, such as: adapters, spindles, axles, bolts, crankshafts, connecting rods, chuck bodies, chucks, conveyor belt pins and rollers, ejection pins, forks, gears, Guide rods, hydraulic shafts and parts, lathe spindles, logging parts, milling spindles, motor shafts, nuts, clamping rods, various pins, pins, pump shafts, plungers, sleeve, spindle, sprocket, stud bolt, tool holder, torsion bar, worm, etc.
Packing and delivery
We are committed to providing customers with one-stop steel solutions, including product consulting, procurement, logistics, after-sales service, etc. Our professional team has rich industry experience and resources, which can quickly respond to customer needs and provide customized procurement solutions.

FACTORY APPEARANCE
Zhonghuifa Metal Manufacturing (Shanghai) Co., LTD is more than just a supplier; we are a strategic partner committed to fueling global development with strength and reliability.
CUSTOMER VISIT
We invite you to experience the difference that a truly dedicated steel trade partner can make.We sincerely look forward to establishing good cooperative relations with you, maintaining long-term cooperation, and jointly creating a better future!
OUR EXHIBITIONS
PRODUCT TESTING
Our experts directly source from reputable mills and implement rigorous quality inspection protocols at every stage.
CUSTOMER CHAT
We conduct business with honesty, transparency, and respect, building lasting trust with our partners.
APPLICATION AREAS
The products are widely used in new energy, biomedicine, electronic information, photovoltaic power generation, aerospace, 5G communications, ecological agriculture, building materials, consumer goods, water treatment, home decoration, green packaging and other emerging fields.
New Energy
Biomedicine
Electronic Information
Power generation
Aerospace
5G communications
Ecological Agriculture
Building Materials
Consumer Goods
Water treatment
Home Decor
Green packaging
FAQ
Q1:Can you send samples?
A:Of course, we can provide customers with free samples and express shipping service to all over of the world.
Q2:What product information do I need to provide?
A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.
Q3:It's my first time to import steel products, can you help me with it?
A:Sure,we have agent to arrange the shipment, we will do it together with you.
Q4:What about product prices information?
A:Prices various according to periodic price changes of raw materials.
Q5:What ports of shipment are there?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can specify other ports according to your needs.
Q6:What is your terms of payment ?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment or based on BL copy or LC at sight.
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