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 | AISI 304, ASTM A815, AISI 316L |
| Medium-carbon steel | 0.25 – 0.60 | Martensite | Low hardenability, medium strength, ductility and toughness | AISI 409, ASTM A29, SCM435 |
| High-carbon steel | 0.60 – 1.25 | Pearlite | High hardness, strength, low ductility | AISI 440C, EN 10088-3 |
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
| DC01/DC02/DC03/DC04
Cold Rolled Steel Coil |
| DC
steel coils have high tensile strength and elongation, giving them good
processing properties during the manufacturing process. This makes DC steel
coil widely used in the manufacturing of automotive parts, home appliances,
construction and other parts that require high strength and precision. DC
steel coil has excellent weldability and machinability with its low carbon
content. So it can be processed through various welding and cutting
processes, such as arc welding, gas shielded welding, laser cutting, etc., to
meet the needs of material processing performance in different fields.
Lastly, it meets the requirements of environmental protection and sustainable
development by releasing low carbon emission. |
| Product
Parameters |
| Product Name | DC01/DC02/DC03/DC04
Cold Rolled Steel Coil |
| Production
Process | Hot Rolling,
Cold Rolling |
| Material
Standards | AISI, ASTM,
ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, etc. |
| Width | 45mm-2200mm |
| Length | Custom Size |
| Thickness | Hot Rolling:
2.75mm-100mm |
| Cold Rolling: 0.2mm-3mm |
| Delivery
Conditions | Rolling,
Annealing, Quenching, Tempered or Standard |
| Surface
Process | Ordinary, Wire
Drawing, Laminated Film |
| Chemical
Composition |
| C: max.
0,08 % |
| Mn: max.
0,40 % |
| P: max.
0,03 % |
| S: max.
0,03 % |
| Mechanical
Properties |
| Steel Grade | Yield Strength (MPa) min | Tensile Strength (MPa) min | Elongation | Old Description |
| % min |
| DC01 | ≤280 | 270-410 | 28 | St
12-03 |
| DC03 | ≤240 | 270-370 | 34 | St
13-03 |
| DC04 | ≤210 | 270-350 | 38 | St
14-03 |
| DC05 | ≤180 | 270-330 | 40 | St
15-03 |
| DC06 | ≤170 | 270-330 | 41 | - |
| DC07 | ≤150 | 250-310 | 44 | - |
| Scope of
Application |
| DC01 can
be used for simple forming work, for example Bending, embossing, beading and
pulling. |
| DC03 is
suitable for forming requirements like Deep drawing and difficult profiles
suitable. |
| DC04 is
suitable for high deformation requirements. |
| DC05 is
a thermal forming grade, it is suitable for higher forming
requirements. |
| DC06 is
a grade for special deep drawing, suitable for the higher deformation
requirements. |
| DC07,
this superior deep drawing quality is suitable for highest deformation
requirements. |