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A105 Round Steel Bar

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 content (wt.%)MicrostructurePropertiesExamples
Low-carbon steel< 0.25Ferrite, pearliteLow hardness and cost. High ductility, toughness, machinability and weldability
Medium-carbon steel0.25 – 0.60MartensiteLow hardenability, medium strength, ductility and toughness
High-carbon steel0.60 – 1.25PearliteHigh hardness, strength, low ductility


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.


Product Display


A105 Round Steel Bar

Product Application


A105 Round Steel Bar

Product Packaging

A105 Round Steel Bar


Factory Display

  • steel coil
  • steel coil
  • steel coil
  • steel coil
  • steel pipe
  • steel coil
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FAQ

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We support custom processing for a full range of steel products. For items such as steel plates, profiles, pipes, and round bars, we provide tailored services—including cutting, bending, drilling, trimming, beveling, anti-corrosion painting, and hot-dip galvanizing—based on client construction drawings and on-site requirements. We can process materials to any dimension or non-standard specification, meeting the unique needs of various engineering projects and equipment manufacturing applications.

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We offer free sample delivery. To ensure peace of mind during the procurement process, we provide steel samples matching your specifications, allowing you to verify material quality, check manufacturing processes, and facilitate acceptance inspections by the project owner. Testing samples prior to placing bulk orders helps minimize procurement risks.

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