Your Professional Alloy Steel Supplier

 

Jiangsu Cunrui Metal Products Co., Ltd. was established on March 24, 2016. It is a modern enterprise specializing in the production and export of high-quality metal pipes.

 

Our company is a significant manufacturer of high-quality metal materials in China. Our product range includes stainless steel, carbon steel, alloy steel, silicon steel, etc., which are widely used in the medical, food, construction and other industries.

 

 
  • Hastelloy C-276 Pipe
    Hastelloy C-276 Pipe for Severe Corrosion ServiceHastelloy C-276 pipe, also identified as UNS N10276, is a nickel-molybdenum-chromium alloy developed for demanding chemical processing and highly
  • Monel 400 Pipe
    Monel 400 Pipe for Chemical, Marine and Process PipingWhen a piping system is exposed to seawater, hydrofluoric acid, caustic solutions or other aggressive process media, material selection becomes a
  • 4140 Alloy Steel Bar
    4140 Alloy Steel Bar for Shafts, Gears and Heavy-Duty Mechanical PartsWhen buyers choose 4140 steel bar, they are usually looking for more than basic machinability. The main reason for selecting 4140
  • ASTM A335 P9 Alloy Seamless Steel Pipe
    What is ASTM A335 P9 Alloy Steel Seamless Pipe? This ASTM A335 P9 seamless alloy pipe is a Cr-Mo alloy type, and it's particularly good for situations with high temperatures and high pressure.
  • Incoloy 800H Pipe
    Incoloy 800H Pipe is a mix of nickel, iron, and chromium, made for when you need something strong that won't corrode, even if it's used all the time above 600°C...
  • X12CrMo5 Alloy Steel Plate
    X12CrMo5 Alloy Steel Plate is a type of chromium-molybdenum alloy steel that can stand up to heat. It's good for structures and pressure containers that need to work at high temperatures. This
  • 4130 Alloy Steel Bar
    AISI 4130 Alloy Steel Bar (also known as 4130 Alloy Rod) is a chromium-molybdenum low-alloy steel with an excellent balance of toughness, tensile strength, and fatigue resistance. It is widely used
  • 4340 Alloy Steel Bar
    SAE 4340 Alloy Steel Bar, also known as 4340 Alloy Rod, is a premium-grade nickel-chromium-molybdenum alloy steel widely recognized for its outstanding strength, toughness, and fatigue resistance.
  • 8620 Alloy Steel Bar
    The 8620 Alloy Steel Bar, also known as 8620 Alloy Rod or 8620 Alloy Steel Rod, is a low-alloy steel with excellent hardenability, toughness, and fatigue resistance. Manufactured according to
  • 34CrNiMo6 Alloy Steel Bar
    The 34CrNiMo6 Alloy Steel Bar, also referred to as 34CrNiMo6 Steel or 34CrNiMo6 Alloy Steel Rod, is a high-strength, low-alloy structural steel known for its exceptional toughness, wear resistance,
  • 42CrMo4 Alloy Steel Bar
    The 42CrMo Alloy Steel Bar, also referred to as 42CrMo Steel or 42CrMo Alloy Steel Rod, is a high-strength low-alloy steel known for its excellent toughness, wear resistance, and fatigue strength.
  • A213 Alloy Steel Seamless Tube
    The A213 Alloy Steel Seamless Tube offered by Jiangsu Cunrui Metal Products Co., Ltd. is manufactured according to ASTM A213 standard, ensuring consistent quality and reliability. These seamless
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Why Choose Us
Production Capacity
Equipped with large-scale production facilities, we have an annual manufacturing capacity exceeding 6,000 metric tons.
24-Hour Online Service
We provide round-the-clock customer support with inquiry responses within 24 hours, including technical assistance and quotation services.
Global Supply Chain Network
Our products have earned widespread recognition and trust across more than 50 countries, including the United States, France, South Korea, Japan, India, Germany, and Spain, as well as key regions such as South Asia, Southeast Asia, and the Middle East.

 

Parameter

Element

Content (%)

Carbon (C)

0.28 – 0.33

Silicon (Si)

0.15 – 0.35

Manganese (Mn)

0.40 – 0.60

Chromium (Cr)

0.80 – 1.10

Molybdenum (Mo)

0.15 – 0.25

Phosphorus (P)

≤ 0.035

Sulfur (S)

≤ 0.040

 

Customized Services

Custom Dimensions & Tolerances

We offer special dimensions and tolerances to meet your specific requirements, ensuring precise fit and function.

Custom Machining Services

We provide custom cutting, machining, threading, and drilling services to tailor products to your needs.

Surface Treatments

Our surface treatments include galvanizing, phosphating, and anti-rust coating to enhance durability and corrosion resistance.

 

Benefits of Alloy Steel
 

Enhanced Mechanical Properties

Processes like forging and heat treatment refine the grain structure, enhancing strength, toughness, and fatigue resistance.

X12CrMo5 Alloy Steel Plate
4130 Alloy Steel Bar

Improved Surface Finish

Rolling and other finishing processes improve the surface quality and dimensional accuracy of the steel, which is crucial for both aesthetic and functional purposes.

Increased Durability

Proper processing ensures that alloy steels can withstand demanding conditions, extending the service life of components and structures.

4340 Alloy Steel Bar
8620 Alloy Steel Bar

Cost-Effectiveness

While alloy steels may have a higher initial cost compared to standard carbon steels, their benefits translate into long-term cost savings.

Reduced Maintenance

The increased durability and resistance to wear and corrosion mean less frequent repairs and replacements.

12Cr1MoV Alloy Steel Pipe
30CrMo Alloy Steel Pipe

Extended Service Life

Alloy steel's longevity reduces the total lifecycle cost of products and infrastructure.

 

Manufacturing Process Of Alloy Steel

 

Forging

This process involves shaping alloy steel by applying compressive forces at high temperatures. Forging improves the steel’s mechanical properties by aligning the grain structure and increasing strength.

Rolling

Alloy steel is passed through rollers to achieve the desired thickness and shape. Rolling enhances the steel’s surface finish and consistency while refining its microstructure.

Heat Treatment

Heat treatment processes such as annealing, quenching, and tempering are used to alter the steel’s properties. Heat treatment can increase hardness, strength, and toughness, depending on the specific requirements.

 

Application of Alloy Steel
 

Construction projects

 

It is often chosen for building strong, long-lasting structures.

Machinery and automotive components

Its strength and durability make it suitable for manufacturing parts like engines and heavy equipment.

Shaft production

 

Alloy steel is used to create items like motor shafts and forged rolls.

Gear manufacturing

 

Its toughness and wear resistance make it perfect for producing gears.

 

Logistics

We will help you to choose the best shipping way according to your detail requirements. By sea, by air, or by express, etc.

 
 

The time frame of an order delivery is divided into two parts

Processing time: 7-14 Days
Shipping time: 20~30 Days

 
 
 

Shipping methods

 

DDP, DAP, EXW, etc.

 
 

Shipping fee

 

The shipping fee will be changed according to every pacel's weight.

 

 

 

Certificate

 

productcate-1-1

 

 

FAQ

 

Q: What is alloy steel?

A: Alloy steel is a type of steel that contains a variety of alloying elements like molybdenum, manganese, nickel, chromium, vanadium, silicon, and boron. These elements enhance the steel’s strength, hardness, toughness, and wear resistance. The proportion of alloying elements typically ranges from 1% to 50%.

Q: What grade is alloy steel?

A: Alloy steel grades include 4130, 4140, 4340, and 8620. For example, 4130 is a low-alloy steel widely used in the aerospace industry, while 4140 is a chromium-molybdenum steel commonly used in large equipment like cranes, gears, and turbines.

Q: How do I choose the right alloy steel grade?

A: Match mechanical loads, environmental exposure, and manufacturing method using datasheets or engineering support.

Q: Are alloy steels weldable like carbon steel?

A: Many are, though some require pre-heat or post-heat treatment; low-alloy grades are generally easier to weld.

Q: Can alloy steel be recycled?

A: Yes—nearly 90% of alloy steel is recycled, making it sustainable and cost-effective.

Q: Is it expensive to use alloy steel?

A: Initially more costly than plain steel, but longevity, performance, and reduced maintenance often yield better total value.

As one of the leading alloy steel manufacturers in China, we warmly welcome you to buy cheap alloy steel for sale here from our factory. All customized products are with high quality and competitive price. For pricelist and free sample, contact us now.

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