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Quenched and Tempered Round Steel

Your Professional Quenched and Tempered Round Steel Supplier

 

The company is located at No. 1, Baihe Road, Hudai Town, Binhu District, Wuxi City. It is a professional manufacturer registered with the permission of relevant national departments. Its products are rich and diverse, covering a variety of high-quality steels such as cold-drawn round steel and cold-drawn round steel. Cold-drawn steel series products are widely used in many key industries, from high-strength fasteners for wind power anchor bolts to automotive parts, from medical components to logistics machinery and equipment, demonstrating its excellent quality and wide applicability.

 

 
 
Why Choose Us
 
 
 

High Quality

From cold-drawn bright round steel to cold-drawn silver-bright round steel, from cold-drawn square steel to cold-drawn hexagonal steel, the rich product variety meets the needs of different customers.

 
 

Advanced Equipment

Our company boasts a comprehensive range of equipment. From advanced production machinery like automated assembly lines to state - of - the - art inspection tools, we're well - equipped to meet diverse manufacturing demands.

 
 

Professional Team

Zhongao assembles a professional team. Comprising seasoned engineers, skilled technicians, and dedicated managers, we ensure efficient operations, quality products, and excellent customer service.

 
 

Custom Service

This service stands as one of the exclusive hallmarks of Zhongao. We craft tailor - made solutions, precisely addressing diverse client requirements with professionalism and creativity.

 

 

AISI 4140 chemistry

Carbon %

0.38 - 0.43

Manganese %

0.75 - 1.00

Phosphorus, max %

0.04

Sulfur, max %

0.04

Silicon %

0.15 - 0.35

Chromium %

0.80 - 1.10

Molybdenum %

0.15 - 0.25

 

Heat conditions for A519-4140

Condition

Grade

Medium

Annealed or normalized

A519-4140

Air

Quenched and tempered

A519-4140

Polymer or oil

 

Non Metal Inclusion(ASTM E45 method A)

A

B

C

D

Macroscopic Structure:

Heavy

Thin

Heavy

Thin

Heavy

Thin

Heavy

Thin

Ordinary Porosity

Centre Porosity

Segregation

0

0.5

0

0.5

0

0

0.0

1.0

1.0

0.5

0.5

 

API 5CT L80 CASING PIPES & TUBES TYPICAL MECHANICAL PROPERTIES

Tensile Strength

655 MPa min

95,000 psi min

Yield Strength

552 MPa min

655 MPa max
 

80,000 psi min

95,000 psi max

Total Elongation Under Load

0.500 %

-

Hardness

23 Max HRC

241 Max HBW

 

Fabrication and Heat Treatment

Tempering:

Tool steels are tempered at 482-593°C (900 to 1100°F) for a Rockwell C hardness of 28 to 34.

Annealing:

Annealing takes place at 760-788°C (1400 to 1450°F) and then the steels are cooled slowly in the furnace at a temperature less than 4°C (40°F) per hour.

Cold Working:

Tool steels are capable of being readily cold worked by using conventional tooling methods with the alloy in the annealed condition.

Welding:

Conventional methods are used for welding of P20 tool steels.

Forging:

Tool steels are forged at 1093°C (2000°F) down to 899°C (1650°F). Forging below 871°C (1600°F) is not recommended for these steels.

Forming:

Tool steels can be readily formed by conventional methods in the annealed condition.

Machinability:

Tool steels have excellent machinability at about 80% that of water hardening steels.

Heat Treatment:

Tool steels are heated to 871-899°C (1600-1650°F) in the carburizing medium during the carburizing process. After being carburized, these steels are heated to 816-871°C (1500-1600°F) in order to be hardened and then held for 15 minutes and finally oil quenched.

Applications:

Tool steels are used for low-temperature applications that include injection molds and die casting dies.

 

Alloy Quenched and Tempered Steel

 

General Applications

Widely used in transmission systems, motors of tractors, and small to medium-sized vehicles. The material can be an alternative to 12CrNi3 to make higher-grade carburized and cyanide carburizing parts, such as oil drilling tools, claws, and cones for mining.


It is commonly used for carburized gears, pinions, shafts, bearings, piston rings, ring gears, crankshafts, etc.

 

 

Sizes and Conditions

Our steel materials come in various sizes and conditions, specially catered to our customers' needs. They are available in round bars, flat bars, plates, and blocks.
The conditions of the materials vary from pre-hardened, hot-rolled, annealed, quenched, and tempered to surface finishes such as black, pre-machined, ground, and polished.

4340 Quenched and Tempered Steel

 

 

FAQ

 
 

Q: How long is your delivery time?

A: Generally it is 5-10 days if the goods are in stock. Or it is 15-20 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What is your MOQ?

A: Usually our MOQ is 5t. But if your quantity is small, the price may be a little higher. When there is a big quantity, the price will be quite lower.

Q: How to buy your ideal products?

A: You can provide us your drawing, and we will produce as your drawing. Or we can design as your requirements if you do not have a clear plan.

Q: How to pay?

A: TT and L/C are acceptable and TT will be more appreciated.30% deposit before producing, 70% balance before loading by TT.

Q: How to install after the goods destination?

A: We will provide installation instruction and video for you. Technicians will be sent to help you if it is necessary. However, the visa fee, air tickets, accommodation, wages will be provided by buyers.

Q: How to get an accurate quotation?

A: Product detail size & Length,product quantities,product material grade.

We're well-known as one of the leading quenched and tempered round steel manufacturers in China. Please feel free to buy high quality quenched and tempered round steel in stock here from our factory. For price consultation, contact us.

42CrMo Quenched and Tempered Steel, Alloy Quenched and Tempered Steel, 4340 Quenched and Tempered Steel

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