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ASTM 4340 / UNS G43400 Alloy Steel Sheet for Sales | W-Nr.1.6511 Steel Plate

  • ASTM 4340/ ISO 34CrMo4 /UNS G41350

  • 2000-10000 mm

  • ASTM,UNS,W-Nr.

  • SHEET/ Flat


  • Alloy Steel

  • 10 TON 

  • Industrial



ASTM 4340 steel plate is a high-strength alloy steel, ASTM 4340 is equivalent to 34CrMo4, with excellent mechanical properties and wear resistance. It is mainly composed of chromium, nickel, molybdenum, and steel, with excellent tensile strength and yield strength, suitable for applications with high loads and impact loads, and maintains its shape and performance under high-stress conditions. ASTM 4340 steel plate is widely used in aerospace, automotive, petroleum, and chemical industries.

Product Details


 Product Specification 

ASTM 4340 steel plate is a high-strength alloy steel with excellent mechanical properties and wear resistance. It is mainly composed of a certain proportion of chromium, nickel and molybdenum elements added to the steel. ASTM 4340 steel plate has excellent tensile strength and yield strength, and is suitable for applications that withstand high loads and impact loads. It has good toughness and tensile strength. ASTM 4340 steel plates are widely used in aerospace, automotive, petroleum and chemical industries.

Material Alloy Steel
Length 2000-10000mm
Standard ASTM 4340/UNS G43400/EN 36NiCrMo4 
Technique Hot Rolled
Thickness 2mm to 6mm
Application  Industrial
Country of Origin Made in China


 Chemical element content (%)

Element C Si Mn P S Cr Ni Cu Mo
Minimum 0.38 0.15 0.6 - - 0.7 1.65 - 0.2
Maximum 0.43 0.35 0.8 0.035 0.04 0.9 2 0.35 0.3


 Product Display

astm 4340 alloy steel sheet



astm 4340 steel sheet used in aerospace


ASTM 4340 steel plate is a high hardenability oil-quenched steel with an average carbon content of 0.40% to 0.42%. It is specially used to manufacture large shafts and shaft parts in aviation parts. It is often used to manufacture aircraft parts, such as engine parts, bearings, gears, connecting rods, and turbine blades. Its high strength and wear resistance enable it to withstand stress under high loads and high temperatures.

astm 4340 used in AUTOMOTIVE INDUSTRY


After proper quenching and tempering, ASTM 4340 steel plate can obtain higher strength and hardness, which is suitable for manufacturing high-strength fasteners such as bolts, screws and nuts. It is widely used in the manufacture of automotive accessories. Its high strength and toughness enable it to withstand high speeds and impact loads of automobiles.

astm 4340 used in wind power


ASTM 4340 steel plates are used to make variable pitch, yaw bearings, gear rings of speed increasers in the wind power generation industry, valve bodies and casings of oil production equipment in the petrochemical industry, and slewing bearings of large machinery. In addition, it can also be used to make hexagonal self-locking thin nuts, single-ear and double-ear support plate self-locking nuts.

Production Process


 Product Packaging

astm 4340 sheet of packing

Company Details


 Company Profile

Shunbei Metal is a modern integrated steel service enterprise specializing in Alloy steel products processing, sales, and technical services. The company specializes in the sales of steel pipe, section steel, round steel, PPGI, cold-rolled steel plate, and other metal building materials. Our products are mainly exported to Singapore, South Korea, the Philippines, Vietnam, Peru, Saudi Arabia, Guatemala, Bangladesh, India, and other countries. Shunbei Metal has been engaged in the steel industry for over 10 years, gaining rich experience in team management and establishing good business relationships with customers and factories. We are committed to strict quality control and considerate customer service, providing a variety of products customized processing services. With ISO9001 management system certification and stainless steel products CE certification, we always adhere to the business philosophy of "Quality First, Service First, Honest Cooperation, Mutual Benefit, and Win-Win". We look forward to cooperating with both new and old customers for common development.

shunbei metal company

 | Certifications

shunbei of ISO certifications
shunbei meatl of ISO certifications
shunbei meatl of SGS certifications

Why Choose us?

Advanced Equipment

We use the most advanced equipment in China, with three production lines and a plant area of 30,000 square meters.

High-quality basic steel

We select high-quality raw materials.

Quality Inspection

We implement strict quality inspection standards, and our products meet ISO and SGS international standards to ensure 100% compliance with customer requirements.

Fast Delivery

Advanced production management process, from production to delivery, efficient and fast.

Sales Service

We have professional sales staff in the Spanish, Portuguese, French, Arabic, and Russian markets.




Q: Can you send samples?

A: Yes, we can send samples worldwide. Our samples are free, but customers are responsible for the courier cost.

Q: What product information do I need to provide?

A: Please provide the grade, width, thickness, and the quantity you need to purchase.

Q: What are the shipping ports?

A: We primarily ship from Shanghai, Tianjin, Qingdao, and Ningbo ports. However, we can accommodate other ports based on your requirements.

Q: About the product price? 

A: The product prices may vary due to the cyclical changes in raw material prices.

Q: What certifications do your products have? 

A: Our products are certified with ISO 9001, SGS, EWC, and other relevant certifications.

Q: How long does your delivery time take? 

A: Generally, our delivery time is within 7-45 days. However, in case of high demand or special circumstances, there may be delays.

Q: Can I visit your factory? 

A: Absolutely! We welcome customers from all over the world to visit our factory.

Q: Does the product undergo quality inspection before loading?

A: Yes, all our products undergo strict quality inspection before packaging. Any unqualified products are discarded.

Q: How are the products packed?

A: Our products are packed with an inner layer of waterproof paper, an outer layer of iron packaging, and secured with a fumigated wooden pallet. This ensures effective protection against corrosion during ocean transportation.

Q: What are your working hours?

A: Our online service hours are typically from 8:00 to 22:00 Beijing time. Inquiries received after 22:00 will be responded to on the next working day.


About Us

Foshan Shunbei Ronghang Metal Manufacturing Co., Ltd. established in 2008, specializes in the production of carbon steel, including alloy steel plate, galvanized steel plate, color coated steel coil, cold rolled steel plate.

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