AISI 4140 Hot Rolled Steel Round Bar High Strength Alloy Steel

Model NO.
AISI 4140
Technique
Hot Rolled
Shape
Bar
Special Use
High-strength Steel Plate
Heat Treatment
Annealed, Quenched, Tempered
Delivery Time
According to The Inventory Situation
Product Application
Shafts/Gears/Crankshafts/Fasteners
Price
to Be Confirmed Based on Order Details
Transport Package
Standard Packaging
Specification
According to order
Trademark
ZEICIN
Origin
China
Production Capacity
10000 Ton / Year
Reference Price
$ 270.00 - 810.00
Contact Us

Product Description


AISI 4140 Hot Rolled Steel Round Bar High Strength Alloy Steel
Product Description

AISI 4140 Hot Rolled Steel Round Bar High Strength Alloy Steel

4140 hot rolled round steel bar is a high-strength alloy structural steel with excellent toughness, wear resistance, and impact resistance. It offers a good balance of hardness and machinability, and its properties can be further improved by heat treatment. This steel is widely used in engineering and industrial fields, especially for making shafts, gears, bolts, and other high-stress mechanical parts.

Similar Grades

ZEICIN Grade GB ISO AISI/UNS JIS DIN/EN
4140
42CrMo
42CrMo4
4140
SCM440
42CrMo4/42CrMoS4


Main Chemical Composition%

C Si Mn S P Cr Mo Ni Cu
0.38-0.43 0.15-0.35 0.60-0.85 ≤0.03 ≤0.03 0.90-1.20 0.15-0.30 ≤0.25 ≤0.30

 


Heat Treatment Conditions
Process Temperature (°C) Cooling Method
Annealing 830 Furnace cooling
Normalization 830 ~ 880 Air cooling at room temp
Quenching 830 ~ 880 Oil cooling
Tempering 530 ~ 630 Rapid cooling


 
Our Advantages

AISI 4140 Hot Rolled Steel Round Bar High Strength Alloy Steel

Production process

AISI 4140 Hot Rolled Steel Round Bar High Strength Alloy Steel

Major Equipment

1.  Electric Arc Furnace
2. ESR
3. 5T Forging Machine
4. Vacuum Annealing Furnace
AISI 4140 Hot Rolled Steel Round Bar High Strength Alloy Steel
AISI 4140 Hot Rolled Steel Round Bar High Strength Alloy Steel
5.  Non-destructive Detector
6. Rolling Mill
7. Drawing Mill
8. Spray Forming

 

Surface condition
AISI 4140 Hot Rolled Steel Round Bar High Strength Alloy Steel

 

 

Applications

4140 Hot Rolled Round Steel Bar - Applications

  • Shafts and axles requiring high strength and toughness

  • Gears and gear components with good wear resistance

  • Bolts, studs, and fasteners under heavy load and fatigue stress

  • Crankshafts and camshafts in automotive and machinery industries

  • Heavy-duty machinery parts exposed to impact and wear

  • Engineering components needing reliable performance after heat treatment

 
Packaging & Shipping
 
 
AISI 4140 Hot Rolled Steel Round Bar High Strength Alloy Steel
AISI 4140 Hot Rolled Steel Round Bar High Strength Alloy Steel
AISI 4140 Hot Rolled Steel Round Bar High Strength Alloy Steel
AISI 4140 Hot Rolled Steel Round Bar High Strength Alloy Steel
AISI 4140 Hot Rolled Steel Round Bar High Strength Alloy Steel
AISI 4140 Hot Rolled Steel Round Bar High Strength Alloy Steel AISI 4140 Hot Rolled Steel Round Bar High Strength Alloy Steel
FAQ

Q1: Do you accept trial orders?
A1: Yes, we accept trial orders if the exact size is in stock.

Q2: What is your delivery time?
A2: If the goods are in stock, delivery time is generally 5-15 days. If the goods are not in stock, it may take 15-20 days, depending on the order quantity.

Q3: Do you offer discounts for bulk orders?
A3: Yes, we offer discounts for bulk orders. The specific discount will depend on the order quantity and cooperation terms. Please feel free to contact us for more information.

Q4: What is your product packaging like?
A4: Our products are packaged accordingly in standard industrial packaging to ensure safety during transport. If you have special packaging requirements, please specify them when placing your order, and we will package your items accordingly.

Q5: What payment methods do you support?
A5: We accept a variety of payment methods, including T/T, L/C, Alipay, PayPal, etc. The specific payment method can be arranged flexibly based on the order amount and customer needs.

Leave Your Message

 

Alloy Steel
✉ Contact Supplier