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
| SPCC/SPCC/SPCD/SPCE Cold Rolled Steel Coil |
| SPCC steel coil comes with impressive properties, making it an ideal choice across various industries. A key advantage is its high tensile strength, giving it the capacity to deal with heavy loads and resist deformation. So SPCC steel coil is especially suitable for applications requiring superior durability and structural integrity. Another notable feature of SPCC steel coil is its excellent formability as the coil can be easily shaped and molded into different sizes and dimensions without compromising its structural integrity. This flexibility makes it suitable for manufacturing processes like stamping, bending and deep drawing. SPCC steel coils have a uniform appearance that adds a professional feel to finished products using this material. Additionally, this surface helps greatly in preventing corrosion, thus extending the life of the coils. |
| Product Parameters |
|
| Product Name | SPCC/SPCC/SPCD/SPCE 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 |
| SPCC Grade: C≦0.15; Mn≦0.60; P≦0.100; S≦0.035 |
| SPCCT Grade: C≦0.15; Mn≦0.60; P≦0.100; S≦0.035 |
| SPCD Grade: : C≦0.10; Mn≦0.50; P≦0.040; S≦0.035 |
| SPCE Grade: C≦0.08; Mn≦0.45; P≦0.030; S≦0.030 |
| SPCF Grade: C≦0.06; Mn≦0.45; P≦0.030; S≦0.030 |
| SPCG Grade: C≦0.02; Mn≦0.25; P≦0.020; S≦0.020 |
| Mechanical Properties |
| Hardness: Heat Treatment Code HRBS HV10 |
| Annealed A – – |
| Annealed + Finishing S – – |
| 1/8 hard 8 50~71 95~130 |
| 1/4 hard 4 65~80 115~150 |
| 1/2 hard 2 74~89 135~185 |
| Full hard 1 ≥85 ≥170 |
| Scope of Application |
| SPCC/SPCCT: Common & General Use; Characteristics: Suitable for bending processing and simple deep drawing processing, is the most demand varieties; Applications: Refrigerators, rails, switchboards, iron baskets and so on. |
| SPCD: Drawing & Stamping Use; Characteristics: Second only to SPCE, is the quality of the smaller deviation of the drawing steel plate; Applications: Automobile chassis, roof and so on. |
| SPCE/SPCF: Deep Drawing & Stamping Use; Characteristics: Grain is adjusted, deep drawing performance is excellent, after the stamping can get a beautiful surface. Applications: Car fender, rear side panels and so on. |
| SPCG: Extra-Deep Drawing & Stamping & Punching Use; Characteristics: Very low carbon cold rolled steel, excellent deep drawing processability. Applications: Car interior board, surface and so on. |
| Remarks: SPCCT is users specified the grade of SPCC which need to ensure that the tensile strength and extensibility of the species. SPCF, SPCG will need to ensure that there have non-aging (not due to the occurrence of tensile deformation of the property), after outside factory for 6 months – that is, SPCC, SPCD, SPCE if stored for a long time, will produce mechanical performance changes, especially to reduce the cold stamping performance, it should be used as soon as possible.SPCC series catalog need to make provision for hardness and surface in advance when ordering. |