4140 bar 4140 alloy bar 4140 round bar 4140 round custom cutting
Product Description
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
Features:
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.
Technical Parameters:
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.
Delivery Condition:
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.
company advantage:
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
Application areas:
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.
Customization:
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.
Related Products
Why Choose Us
- Professional and reliable steel products supplier, CE, ISO and SGS
certified source manufacturer from China
- Our store has a large scale of metal products, with an inventory of
more than 50,000+ tons, and can be shipped quickly.
- We have officially obtained CE, ISO, and SGS certification.
- We are a comprehensive steel enterprise with “one-stop” service
from production, processing and export of products.
Machining Center
We have our own workshop, we can supply one stop service:
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
Company Introduction
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.
Our Services & Strength
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!
Our Certificate
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.
Contact Us
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 commitment
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.
