C40 Carbon Steel Bar

C40 Carbon Steel Bar

High strength: C40 steel has high strength and toughness, which makes it suitable for use in applications where high strength is required.Good machinability: C40 steel has good machinability, which means it can be easily machined into desired shapes and sizes.Weldability: C40 steel has good weldability, which means it can be easily welded using various welding techniques without experiencing significant degradation in its mechanical properties.Wear resistance: C40 steel has good wear resistance, which makes it suitable for use in applications where the material is subjected to abrasion and wear.Corrosion resistance: C40 steel is not a corrosion-resistant material, but it can be protected from corrosion by applying coatings or surface treatments.Versatility: C40 steel is versatile and can be used in a wide range of applications, such as in the manufacturing of home appliances, furniture, and structural components.

Request a Quote

Featured Image


Product Name C40 Carbon Steel Bar Carbon Structural Steel
SizeRound Steel Bar
Outside Dia(mm): 8mm – 650mm As Customers’ Requirement
Square Bar
Outside Dia(mm):5.5 – 250MM
Hexagon Bars
Diameter supplied:2mm – 80mm As Customers’ Requirement
Length1 – 9m or As Customers’ Requirement
Surface FinishAll Sizes Can be customized
CertificationsISO 9001 BV SGS
PackingIndustry standard packaging or according to client’s requirement
Payment termsT / T or L / C at sight
Trade TermsEXW, FOB, CIF, CFR
Delivery timeFast delievery in 7 days, up to order quantity
QualityMill Test Certificate supplied with the shipmenT / Third part inspection is acceptable
Packing DetailStandard export package:Wooden pallet +paperboard +steel strip Customized requirements are accepted
Cutting TypeAll Sizes Can be customzied
MOQ1 Ton
Capacity10, 000 ton per month

C40 Grade Worldwide Equivalents
China | GB 307740
USA | ASTM A29 1040
Japan | JIS G4051S40C
UK |BS970080M40
France | NFA 33-101AF60

Carbon Structural Steel AISI C40 Chemical Composition(%)
DIN 17200CK40/1.11860.37-0.44≤0.40.50-0.80≤0.035≤0.03

Mechanical properties of C40
Tensile StrengthYield StrengthElongationReduction of AreaImpact Charpy-V

Video Inspection

Our company has decades of experience, all products are shipped directly from the factory, integrating cutting/forming/surface processing one-stop service. We accept on-site and online video inspections to give you the most complete service guarantee.

Free Sample

We will provide free samples for every customer, as long as you place an order and pay successfully, we will give free samples in every order.

Quick Quote for 12h

We have efficient pre-sales and after-sales services. Although our customers come from all over the world, we will guarantee that your information will be replied within 12 hours.

Prompt Delivery

Our products are shipped directly from the manufacturer, usually within 3 days after you place an order. If it is a custom order, the delivery will not exceed 15 days.

Quality Assurance

We are an excellent and reliable steel supplier, we only produce high-quality carbon steel products, we are the choice of 5000+ customers. We have a complete production line and precision processing workshop, just to ensure the high quality of each product.

ISO, BV, TUV, SGS Certification

We have strict quality control over our products and have obtained ISO certification as well as ISO 9001 certification. We have established relationshios with many countries around the world and also have access to many export certificates (BV, TUV, SGS).

Accept Customizationn

We have standard stock and custom cuts, support OEM/ODM, meanwhile we have a variety of forms and sizes to choose from, and can accept custom size products.

Flexible MOQ

We can accept flexible MOQ, and at the same time, we can accept MOQ as minimum as 1 ton product.

24 hours Service

Our company provides professional 24-hour service, one-stop answering questions about various environmental processes for you, guaranteeing you various answers from purchase to after-sales, and providing emergency services 24/7.

Our Happy Clients


Trusted by our customers from all the world.

I recently ordered steel products from this company, and I was blown away by their exceptional service and product quality. Their prompt delivery ensured that my order arrived in just a few days, exceeding my expectations. The free samples they provided gave me confidence in the high-quality carbon steel products I would be receiving. Additionally, their 24-hour service was a lifesaver when I had urgent inquiries and needed immediate assistance. I highly recommend this company for their commitment to quick and reliable delivery, as well as their dedication to customer satisfaction.

Alkaram - Rice Engineering Pvt Ltd

I have been a loyal customer of this steel supplier for years, and their commitment to quality assurance is unmatched. The ISO, BV, TUV, and SGS certifications they hold speak volumes about the high standards they maintain in their production processes. Their flexible MOQ has made it convenient for me to place smaller orders without any hassle. Moreover, their quick quote response within 12 hours showcases their efficiency and attention to customer needs. I highly recommend this company for their impeccable quality assurance and their ability to accommodate various order sizes.

Abdullah AlAdawi

I recently discovered this steel supplier, and I am extremely satisfied with their services. The customized products they offer perfectly fit my project requirements. Their acceptance of customizations and their ability to deliver within 15 days ensured that my project stayed on track. The prompt delivery, coupled with their excellent customer service, made my experience truly seamless. The free samples they provided allowed me to assess the quality of their steel products firsthand. I highly recommend this company for their excellent customization options and their commitment to timely delivery.



We are eager to discuss your business needs and answer any questions you may have. Enter your details and we will get back to you shortly.

Phone / WhatsApp: +86 185 6184 1682

Please enable JavaScript in your browser to complete this form.
Our team will answer your inquiries within 12hours.
Your information will be kept strictly confidential.