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A105 Round Steel Bar
A105 is an ASTM specification for steel forgings, primarily for carbon steel forged pipe components. The type of carbon steel wrought alloy involved is a low carbon, manganese and silicon steel similar to the AISI 1330, but with a lower manganese content.
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PRODUCT PARAMETERS

Carbon Steel: Properties, Production, Examples and Applications


Carbon steel is an iron-carbon alloy, which contains up to 2.1 wt.% carbon. For carbon steels, there is no minimum specified content of other alloying elements, however, they often contain manganese. The maximum manganese, silicon and copper content should be less than 1.65 wt.%, 0.6 wt.% and 0.6 wt.%, respectively.


Types of carbon steel and their properties


Carbon steel can be classified into three categories according to its carbon content: low-carbon steel (or mild-carbon steel), medium-carbon steel and high-carbon steel . Their carbon content, microstructure and properties compare as follows:



Carbon Steel Description



Grade:


1)GB: Q195, Q215, Q235A, Q235B, Q235C, Q235D, Q255A, 255B, Q275, Q295A, Q295B, Q345B, Q345C, Q345D, Q345E, Q390A, Q390B, Q390C,Q390D, Q390E, Q420, Q420B, Q420C, Q420D, Q420E, Q460D, Q460E, Q500D, Q500E, Q550D, Q550E, Q620D, Q620E, Q690D, Q690E


2)EN: S185,S235JR, S275JR, S355JR, S420NL, S460NL S500Q, S550Q, S620Q, S690Q 


3)ASTM: Grade B, Grade C, Grade D, A36, Grade 36, Grade 40, Grade42, Grade 50, Grade 55, Grade 60, Grade 65, Grade 80 


4)JIS: SS330, SPHC, SS400, SPFC, SPHD, SPHE



PRODUCT DETAILS



A105  Round Steel Bar Description
A105 steel bars are widely used in  high temperature, high pressure and corrosive environments. This is because  A105 has excellent mechanical properties and corrosion resistance. It has  high strength and strength, can withstand high pressure and high temperature,  and has good performance. In addition, A105 also has good processability and  welding performance, making it easy to manufacture and repair. A105 can be used in chemical,  petroleum, food and other industries. During the manufacturing process, A105  typically requires forging and heat treatment. Forging can change the  internal structure of a metal and improve its mechanical properties. Heat treatment  can change the surface structure and hardness of the metal, further improving  its mechanical properties and corrosion resistance.
Product  Parameters
Product  NameA105 Round Steel Bar
StandardEN/DIN/JIS/ASTM/BS/ASME/AISI, etc.
Common  Round Bar Specifications3.0-50.8 mm, Over 50.8-300mm
Flat  Steel Common Specifications6.35x12.7mm, 6.35x25.4mm, 12.7x25.4mm
Hexagon  Bar Common SpecificationsAF5.8mm-17mm
Square  Bar Common SpecificationsAF2mm-14mm, AF6.35mm, 9.5mm, 12.7mm, 15.98mm, 19.0mm, 25.4mm
Length1-6meters, Size Accept Custom
Diameter(mm)Hot Rolling  Round Bar25-600Cold  Rolling Square Bar6-50.8
Hot Rolling Square Bar21-54Cold  Rolling Hexagon Bar9.5-65
Cold Rolling Round bar6-101.6Forged Rebar200-1000
Surface ProcessBright, Polished, Black
Other  ServicesMachining(cnc), Centerless Grinding(cg), Heat  Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting,  Bending, Small Machining, etc.
Chemical  Composition
Carbon  SteelCSiMnPSCr
A1050.350.10-0.350.60-1.050.0350.040.3
Mechanical  Properties

Tensile Strength  (N/mm2)Elongation %Maximum  Hardness HB
48522187
Scope of  Application
A105 is  used in trucks and marine components, railway vehicles, petrochemicals, milk  mixers, engineering, general structural purposes, offshore and onshore  services, etc.


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A105 Round Steel Bar

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A105 Round Steel Bar

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A105 Round Steel Bar


FACTORY DISPLAY
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FAQ
Q: Are you a factory or a trading company?
A:

Shandong Xinyongyuan Iron & Steel Group Co., Ltd. is a professional foreign trade and supply chain service company specializing in steel products. Leveraging the extensive industrial resources of the "Xinyongyuan " group, we have deeply integrated the production capacities of major domestic steel mills (such as Xinyongyuan, Baowu, HBIS, Ansteel, etc.). We possess stable supply channels and a professional foreign trade team. We are able to provide customers with one-stop steel procurement solutions—covering a wide variety of products and standards—at prices comparable to direct factory supply, combined with exceptional service flexibility.

Q: What products does your company primarily export?
A:

Our product portfolio spans the construction, machinery, energy, and infrastructure sectors. Our main offerings include: Plates & Sheets (Hot-rolled coils, Cold-rolled coils, Medium & Heavy plates, Galvanized sheets, Color-coated sheets); Structural Steel (H-beams, I-beams, Channel steel, Angle steel, Steel sheet piles); Steel Pipes (Seamless pipes, Straight-seam welded pipes, Spiral welded pipes, Galvanized pipes, Square & Rectangular tubes); and Construction Steel (Rebars, Wire rods, Round bars).

Q: What advantages does your company possess in Liaocheng, Shandong?
A:

Located in Liaocheng City, Shandong Province, our company is situated in close proximity to major steel production hubs such as Jinan and Handan, giving us access to abundant upstream resources. Furthermore, we are located within a short-haul transport radius of both Qingdao Port and Rizhao Port. This ensures convenient logistics and low port-consolidation costs, enabling us to efficiently connect with the global maritime shipping network and provide customers with guaranteed rapid delivery.

Q: Which international standards can you supply?
A:

We can produce or supply products in accordance with various international standards, including Chinese National Standards (GB), American Standards (ASTM), Japanese Standards (JIS), European Standards (EN), British Standards (BS), and Australian Standards (AS). Additionally, upon customer request, we can arrange third-party inspections through agencies such as SGS, BV, or Intertek.

Q: What is the Minimum Order Quantity (MOQ)?
A:

The Minimum Order Quantity varies depending on the specific product:
Standard Specifications (e.g., Q235B H-beams, Hot-rolled coils): Orders can be placed starting from one 20-foot container (approximately 20–25 tons).
Special Materials or Custom Sizes: We are open to accommodating small-batch trial orders; please consult with our sales representatives for details. Coiled products are typically shipped in full rolls (individual rolls weighing 15–30 tons); the minimum order quantity is one roll.

Q: What payment methods do you accept?
A:

We support a variety of international trade payment methods. Common combinations include:
30% T/T deposit + 70% balance paid prior to shipment
30% T/T deposit + 70% balance paid upon presentation of a copy of the Bill of Lading
100% Letter of Credit (L/C) at sight
For long-term partners and established clients, more flexible terms may be negotiated.

Q: What is the typical lead time?
A:

In-stock products: Shipped within 7–15 days after receipt of the deposit
Mill-scheduled orders: Generally 20–35 days (depending on the specific product and the steel mill's production schedule)
Large-volume orders (over 5,000 tons): 30–45 days; the specific delivery date must be confirmed with the steel mill

Q: How do you ensure product quality?
A:

We implement a three-tiered quality control system: First, all goods are sourced from reputable, large-scale steel mills and are accompanied by original Mill Test Certificates (MTCs); second, prior to shipment, our quality inspectors conduct on-site spot checks to verify dimensions, surface finish, weight, and other parameters; third, upon client request, we can commission third-party agencies—such as SGS or BV—to perform a comprehensive pre-shipment inspection. Should any material discrepancies or severe quality issues arise due to our fault, we will assume full responsibility for returns, replacements, or negotiated compensation.

Q: Can you provide samples?
A:

Yes. For standard in-stock products, we can provide small-sized samples (approximately 10–20 cm in length) free of charge; customers are only required to cover the international shipping costs. For custom samples produced according to specific drawings, material and processing fees apply; however, these fees are refundable upon the placement of a formal order.

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