Hot Rolled S20c A36 1045 S45c 4140 Steel Round Bar

• After-sales Service: One-Stop Service
• Warranty: One Year
• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS
• Technique: Hot Rolled
• Application: Structural Steel Bar, Tool Steel Bar
• Model NO.: S20c A36 1045 S45c 4140
• Surface Treatment: Blackface
• Alloy: Alloy
• Special Use: Mold Steel, Free Cutting Steel
• Mtc: Original
• Cutting Service: Available
• Grade: Q195-Q345/4140/4130,etc
• Keyword: Carbon Round Bars
• Length: 1-12m/Customized
• Shape: Round Section
• Processing Service: Bending, Welding, Decoiling, Cutting, Punching
• Delivery Time: 5-10 Days
• Transport Package: Standard Seaworthy Package
• Specification: OD10-812mm
• Trademark: Orignal
• Origin: Henan, China
• HS Code: 7214100000
• Production Capacity: 50000tons/Year

Product Description

Hot rolled S20C A36 1045 S45C 4140 steel round bar 

Product Information Introduce
AISI 4140 steel is a low alloy steel containing chromium, molybdenum, and manganese. It is widely used across numerous industries and is an excellent material choice due to its toughness, high fatigue strength, and abrasion and impact resistance. Not many grades can match the versatility and usefulness of 4140.

Material:	carbon steel bar
Diameter:	10mm-1200mm
Length:	3000mm-12000mm Straightness: 3mm/M max
Delivery Time:	5-15 days
MOQ:	1 tons
Heat treatment:	Normalized / Annealed / Quenched / tempered
Technical Data:	According to the customer's requirement of Chemical Composition, Physical Properties and Mechanical Testing
Test:	Ultrasonic test according to SEP 1921-84 G3 C/c
Marking:	Grade, heat NO. length will be stamped one each bar with required color
Payment:	30% advance by T\T; Balance pay before the shipment against shipping documents or irrevocable LC at sight
Application:	Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts, gears.

Applications
This alloy finds many applications as forgings for the aerospace and oil and gas industries, along with myriad uses in the
automotive, agricultural and defense industries, Typical uses are forged gears and shafts, spindles, fixtures, jigs and collars.

Grade	C	Cr	Mn	Si	Mo	S	P
4140	0.38-.43%	0.80-1.10%	0.75-1.0%	0.15-0.30%	0.15-0.25%	0-0.040%	0-0.035%

 

Properties	Metric	Imperial
Tensile strength	655 MPa	95000 psi
Yield strength	415 MPa	60200 psi
Bulk modulus (typical for steel)	140 GPa	20300 ksi
Shear modulus (typical for steel)	80 GPa	11600 ksi
Elastic modulus	190-210 GPa	27557-30458 ksi
Poisson's ratio	0.27-0.30	0.27-0.30
Elongation at break (in 50 mm)	25.70%	25.70%
Hardness, Brinell	197	197
Hardness, Knoop (converted from Brinell hardness)	219	219
Hardness, Rockwell B (converted from Brinell hardness)	92	92
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only)	13	13
Hardness, Vickers (converted from Brinell hardness)	207	207
Machinability (based on AISI 1212 as 100 machinability)	65	65

Heat Treatment
AISI 4140 alloy steel is heated at 845°C (1550°F) followed by quenching in oil. Before hardening, it can be normalized by heating it at 913°C (1675°F) for a long period of time, followed by air cooling.

Forging
AISI 4140 alloy steel is forged at 926 to 1205°C (1700 to 2200°F)

Hot Working
AISI 4140 alloy steel can be hot worked at 816 to 1038°C (1500 to 1900°F)

Cold Working
AISI 4140 alloy steel can be cold worked using conventional methods in the annealed condition.

Annealing
AISI 4140 alloy steel is annealed at 872°C (1600°F) followed by slowly cooling in the furnace.

Tempering
AISI 4140 alloy steel can be tempered at 205 to 649°C (400 to 1200°F) depending upon the desired hardness level. The hardness of the steel can be increased if it has a lower tempering temperature. For example, a tensile strength of 225 ksi can be achieved by tempering at 316°C (600°F), and tensile strength of 130 ksi can be achieved by tempering at 538°C (1000°F).

Hardening
AISI 4140 alloy steel can be hardened by cold working, or heating and quenching.

Machinability
AISI 4140 alloy steel has good machinability in the annealed condition.

Forming
AISI 4140 alloy steel has high ductility. It can be formed using conventional techniques in the annealed condition. It requires more pressure or force for forming because it is tougher than plain carbon steels.

Welding
AISI 4140 alloy steel can be welded using all conventional techniques. However, the mechanical properties of this steel will be affected if it is welded in the heat-treated condition, and post-weld heat treatment should be performed.

Product Details

Produce Process
(1) Material
Tensile strength (kgf/mm²): >58
Yield strength (kgf/mm²): >35
Elongation (%): >20
Cross section reduction rate (%): >45
Hardness (Hb): 167~229

(2) After heat treatment
Tensile strength (kgf/mm²): >70
Yield strength (kgf/mm²): >50
Elongation (%): >17
Cross section reduction rate (%): >45
Hardness (Hb): 201~269


Specification

Application

Packaging & Shipping

Export standared package or as required

Lead time :7-20days based on the quantity

packaging	1. by bundles, each bundle weight under 3 tons, for small outer diameter seamless steel pipe, each bundle with 4 - 8 steel strips.  2. after making by bundle, covered with Polyethylene waterproof cloth.  3. make black paints painting on each pipe, then make bundles
20 feet container contains dimension	length under 6000mm
40 feet container contains dimension	length under 12000mm
By bulk vessel	Freight charge is high by bulk cargo, but large heavy sizes can not be loaded into containers can shipping by bulk cargo

 

 

Our Services
1.Professional Export Experienced sales team, we have learn more products knowledge and our goods with high quality and competitive price

 

2.Fast delivery and short shipping schedule

Once deposit reaches, we will arrange the products at the same day without delay;

Professional purchasing team to find the best goods you need in the shortest time;

Professional shipping company to arrange the shortest schedule to your destination.

There are many stock in our warehouse.(steel plate,steel sheet,steel pipe,steel tube,steel bar,etc.)

 

3.When you not have purchasing plan, we can send you instant market information;

When you plan to purchase, we will give a timely reply in the shortest time;

When you finish purchasing, we will follow you for the products using effect timely.

Why Choose Us?
Our advantages:
1. More than 10 years Professional steel export service. Have own production line.
2. Advanced CNC machine.
3. Low cost&Quick Delivery&High quality.
4. Integrity, strength and quality of products recognized by the industry.
5. Most of our clients are international, the domestic well-known enterprises.
6. Has a complete scientific quality management system. 
7. Can meet any requirements for all kinds of sheet metal processing with advanced equipment.
 
FAQ
Q1: How can I get a sample to check your metal work quality?
Answer: After price confirmation, you can require for samples to check our quality. We will provide you sample for free (value under USD35), as long as you afford the express freight.

Q2: How long can I expect to get the metal work sample?
Answer: After you pay the sample charges(if there is) and send us confirmed drawings, the sample will be ready for delivery in 5-7 working days. The samples will be sent to you via DHL, FedEx,UPS,TNT or EMS. It should arrive in 3-5 workdays. You can use your own express account or prepay us if you don't have any account.

Q3: What about the leading time for metal work mass production?
Answer: Honestly, it depends on the order quantity. Normally, 15 workdays to 30 workdays after your deposit if no the samples are confirmed.

Q4: What will we do if the metal work quality is not ok ?
Answer: If the quality problem is caused by our mistake, we will make replacement order for free or pay the back product charge and handling charge back to you.


More questions, please send us the email to us