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.%) | Microstructure | Properties | Examples |
Low-carbon steel | < 0.25 | Ferrite, pearlite | Low hardness and cost. High ductility, toughness, machinability and weldability |
Medium-carbon steel | 0.25 – 0.60 | Martensite | Low hardenability, medium strength, ductility and toughness |
High-carbon steel | 0.60 – 1.25 | Pearlite | High 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
Name | A105 Round Steel Bar |
Standard | EN/DIN/JIS/ASTM/BS/ASME/AISI, etc. |
Common
Round Bar Specifications | 3.0-50.8 mm, Over 50.8-300mm |
Flat
Steel Common Specifications | 6.35x12.7mm, 6.35x25.4mm, 12.7x25.4mm |
Hexagon
Bar Common Specifications | AF5.8mm-17mm |
Square
Bar Common Specifications | AF2mm-14mm, AF6.35mm, 9.5mm, 12.7mm, 15.98mm, 19.0mm, 25.4mm |
Length | 1-6meters, Size Accept Custom |
Diameter(mm) | Hot Rolling
Round Bar | 25-600 | Cold
Rolling Square Bar | 6-50.8 |
Hot Rolling Square Bar | 21-54 | Cold
Rolling Hexagon Bar | 9.5-65 |
Cold Rolling Round bar | 6-101.6 | Forged Rebar | 200-1000 |
Surface Process | Bright, Polished, Black |
Other
Services | Machining(cnc), Centerless Grinding(cg), Heat
Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting,
Bending, Small Machining, etc. |
Chemical
Composition |
Carbon
Steel | C | Si | Mn | P | S | Cr |
A105 | 0.35 | 0.10-0.35 | 0.60-1.05 | 0.035 | 0.04 | 0.3 |
Mechanical
Properties |
|
|
Tensile Strength
(N/mm2) | Elongation % | Maximum
Hardness HB |
485 | 22 | 187 |
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. |