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[China]
Trade Verify
Address: Qianqiao Industrial Park, Huishan District, Wuxi City, Jiangsu Province
Contact name:Jeff
EDEST STEEL CO.,LTD |
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Verified Suppliers
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4140 bar is a commonly used alloy bar:
Alloy composition: 4140 bar is mainly composed of alloy elements such as chromium (Cr), molybdenum (Mo) and manganese (Mn). The addition of these alloying elements gives the steel good mechanical properties and wear resistance.
4140 bar has high yield strength and tensile strength and is widely used in manufacturing high-strength parts and mechanical components
4140 bar has high strength and maintains good toughness, which means it can withstand shock and vibration loads and is not easily broken or deformed
Due to the addition of alloy elements, 4140 bar has good wear resistance. It resists abrasion, abrasive particles and friction, making it suitable for applications requiring anti-wear properties.
4140 bar has good heat treatment characteristics and its hardness and strength can be changed through heat treatment methods such as quenching and tempering to meet different application needs.
AISI 4140 is an alloy structural steel used in engineering structures such as high-strength shafts, bolts and nuts, gears, pinions and spindles. The locomotive traction consists of large gear, supercharger drive gear, pressure vessel, rear axle, gear load connecting rod and spring clamp.
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 |
Heat treatment of 4140 round steel:
4140 alloy steel material is a high-quality quenched and tempered alloy structural steel, which is a high-quality medium carbon alloy steel.
Oil quenching and tempering hardness is 28-34HRC
4140 annealed delivery hardness is lower than 250HB
Annealing: AISI 4140 alloy steel is annealed at 872°C (1600°F) and then slowly cooled in a furnace.
Tempering: AISI 4140 alloy steel can be tempered at temperatures
from 205 to 649°C (400 to 1200°F), depending on the desired
hardness level. If the tempering temperature is lower, the hardness
of the steel can be increased.
Hardening: AISI 4140 alloy steel can be hardened by cold working or
heat quenching.
For hot forged rolled bar, usually the delivery condition is hot
forged or rolled, annealed/QT, rough turned/Black surface.
For hot forged or hot rolled bar, usually the delivery condition is
hot rolled, annealed/QT, Black surface.
4140 bar supply size range
Hot rolled 4140 bar: Ø16mm-820mm
Forged bar: Ø260mm-1200mm
Q&T (quenching and tempering): Ø16-500mm
Cold drawn bright bar: 5mm to 120mm
The alloy steel bars of EDEST STEEL have the following main characteristics:
High strength: It has higher strength than ordinary steel.
Toughness: Suitable for applications that require impact resistance and wear resistance.
Corrosion resistance: suitable for use in harsh environments.
Wide size range: The diameter range of EDEST STEEL's alloy steel bars ranges from 20mm to 1200mm, making them suitable for various applications.
Alloy steel bars can be heat treated through processes such as annealing, normalizing, tempering, and quenching to achieve the required mechanical properties, with multiple heat treatment processes available for selection
4140 rods are widely used in many fields
Mechanical parts manufacturing: used to manufacture various mechanical parts, such as shafts, pins, gears, connecting rods, etc.
Mold manufacturing: used to manufacture die-casting molds, plastic injection molds, stamping molds, etc. to provide good wear resistance and anti-deformation properties.
Automobile manufacturing: used in the manufacture of automobile engine parts, transmission systems and steering systems
It is used to manufacture key parts such as crankshafts, connecting rods, and gear shafts to meet the automotive industry's requirements for high strength and wear resistance.
Oil and gas industry: used in the manufacture of oil and gas extraction equipment, such as drill pipes, casing, pipe connections, etc.
Aerospace: used to manufacture aerospace engine parts, landing gear components, aerospace bearings and other components requiring high strength and wear resistance.
Heavy machinery and equipment: used to manufacture various heavy machinery and equipment, such as excavators, loaders, cranes, etc. It provides sufficient strength and wear resistance to handle loads and impacts in harsh working conditions.
4140 rods are also widely used in many other industries and fields, especially in scenarios where high strength, wear resistance and impact resistance are required.
Bar customization
We are a professional alloy steel bar manufacturer and can customize bar products that meet specific needs.
Requirement confirmation: Specification requirements, including
diameter, length, material, etc. Detailed drawings or instructions
can be provided to complete customization
Material selection: according to requirements and application environment
Processing technology: customized cutting, forging, heat treatment, etc. according to customer needs
Production and manufacturing: According to customer requirements, the manufacturing, processing, molding, heat treatment and surface treatment of bars are carried out.
Quality Control: Ensure bar products comply with requirements and international standards. We will strictly inspect the bar, measure its dimensions, and test its mechanical properties, etc.
Delivery and service: After customization is completed, final
inspection and packaging will be performed, and the product will be
delivered to you according to the agreed delivery method.
EDEST provides after-sales service to ensure customer satisfaction
and long-term product use.
1. Blasting machine cleaning the steel surface
2. Fiber machine cutting the plate as the CAD drawings
3. Bending machine
4. Drill machine drill the holes.
5. Laser & Punch
6. Laser Cutting
7. Folding
8. Insert Installation
9. Fabrication
10. Assembly
EDEST STEEL CO., LTD Is A Large Comprehensive Steel Enterprise In China Specializing In The Export Of Stainless Steel And Carbon Steel. With Over 26 Years Of Experience In Production, Processing, And Sales, We Maintain Ample Stock Of Stainless Steel, Carbon Steel, And Other Steel Materials. Currently, We Have Established Six Major Production Bases Nationwide, To Provide Diversified Processing And Production Of Stainless Steel, Carbon Steel, And Other Metal Materials To Meet Your Various Procurement Needs. Our High-Quality Products Are Well-Suited For Industries Such As Energy, Manufacturing, Machinery, And Healthcare.
We Are A Leading One-Stop High-End Manufacturing Service Enterprise In China, Equipped With Capabilities In Steel Material Processing, Component Fabrication, Finished Product Manufacturing, And Professional Technical Services. We Aim To Provide Comprehensive Support To Global End-User Manufacturing Enterprises.
We Passed Certificate ISO9001,ISO14000,OHSAS18001.As A Member Of China Iron And Steel Association,We Established Long Term Friendly Cooperation With Famous Domestic Mill Plants,Such As Bao Steel,Wu Steel,An Steel,Tai Steel Etc. As Well As Active Pursues Partnerships Foreign Company ,In Order To Meet Customer Requirement. With Concept Of 'Keep Improving,Win-Win Cooperation',And Executed By Reliable Quality And After Sales Service System,Edest Steel Gained Good Reputation From Customers At Home And Abroad.We Sincerely Welcome You To Come Our Company To Negotiate Business!
Since The Establishment Of The Company, It Has Passed ISO9001/ISO14001/OHSAS18001 And Other System Certifications. MTC Will Be Shipped With The Goods When Shipped. At The Same Time, Support Third-Party Inspection.
EDEST STEEL CO.,LTD.
Address : Qianqiao Industrial Park, Huishan District, Wuxi City, Jiangsu Province
Contact Person : Mr. Jeff
Mobile/WhatsApp : +8618921116238
Email : Jeff@Edesteel.Com
Our Price May Not Be The Lowest, But We Adhere To The "Quality First, Service First" Our Price Is Reasonable, We Will Be Your Most Satisfied Supplier In China
If You Have Any Questions, Please Feel Free To Contact Us! We Are Committed To Providing You With The Best Products At The Most Reasonable Prices, Always Providing Our Best Service.
