Product Description
Carbon steel is divided into carbon structural steel, carbon tool steel, and free-cutting structural steel.
Carbon structural steel is divided into engineering construction steel and machine manufacturing structural steel;
According to the smelting method, it can be divided into open hearth steel and converter steel;
According to the deoxidation method, it can be divided into boiling steel (f), killed steel (z), semi-killed steel (b) and special killed steel (TZ);
According to the carbon content, carbon steel can be divided into low carbon steel (WC ≤ 0.25%), medium carbon steel (WC 0.25% - 0.6%) and high carbon steel (WC > 0.6%).
| Item | Carbon structural steel bar |
| Introduction | Carbon structural steel bar refers to carbon steel with less than 0.8% carbon. |
| This kind of steel contains less sulfur, phosphorus and non-metallic inclusions than carbon structural steel, | |
| and has better mechanical properties. Carbon structural steel can be divided into three categories | |
| according to different carbon content: low carbon steel (C≤0.25%), | |
| medium carbon steel (C is 0.25-0.6%) and high carbon steel (C>0.6%). | |
| According to different manganese content, carbon structural steel is divided into two groups: | |
| normal manganese content (manganese 0.25%-0.8%) and higher manganese content (manganese 0.70%-1.20%). | |
| The latter has better mechanical properties. And processing performance. | |
| Standard | ASTM, DIN, ISO, EN, JIS, GB, etc. |
| Material | A36,A53, A283-D, A135-A, A53-A, A106-A, A179-C, A214-C, A192, A226, A315-B, A53-B, |
| A106-B, A178-C, A210-A-1, A210-C, A333-1.6, A333-7.9, A333-3.4, A333-8, A334-8, | |
| A335-P1, A369-FP1, A250-T1, A209-T1, A335-P2, A369-FP2, A199-T11, A213-T11, | |
| A335-P22, A369-FP22, A199-T22, A213-T22, A213-T5, A335-P9, A369-FP9, A199-T9, | |
| A213-T9, 523M15, En46, 150M28, 150M19, 527A19, 530A30, etc. | |
| Size | Length: 1m-12m, or as required |
| Width: 0.6m-3m, or as required | |
| Diameter: 0.1mm-300mm, or as required | |
| Surface | Clean, blasting and painting according to customer requirement. |
| Application | There are many uses and a large amount. It is mainly used in railways, bridges, |
| and various construction projects to manufacture various metal components that bear | |
| static loads, as well as unimportant mechanical parts and general welded parts that do | |
| not require heat treatment. Usually used for welding, riveting, and bolting hot-rolled | |
| steel plates, steel strips, section steels and steel bars for engineering structures. | |
| Certificates | ISO, SGS, BV. |
| Package | Standard export package, or as required. |
| Price term | FOB, CIF, CFR, CNF, Ex-work |
| Payment | T/T, L/C, Western Union, etc. |
| Delivery time | Within 7-15 workdays after receiving deposit or L/C |
| Container size | 20ft GP: 5898mm(Length)x2352mm(Width)x2393mm(High) 24-26CBM |
| 40ft GP: 12032mm(Length)x2352mm(Width)x2393mm(High) 54CBM | |
| 40ft HC: 12032mm(Length)x2352mm(Width)x2698mm(High) 68CBM |
| 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 |
| Material | China | Former | America | England | Japan | French |
| Soviet Union | ||||||
| GB | ГOCT | ASTM | BS | JIS | NF | |
| High Quality Carbon Structural Steel | 08F | 08KП | 1006 | 040A04 | S09CK | |
| 8 | 8 | 1008 | 045M10 | S9CK | ||
| 10F | 1010 | 040A10 | XC10 | |||
| 10 | 10 | 10,101,012 | 045M10 | S10C | XC10 | |
| 15 | 15 | 1015 | 095M15 | S15C | XC12 | |
| 20 | 20 | 1020 | 050A20 | S20C | XC18 | |
| 25 | 25 | 1025 | S25C | |||
| 30 | 30 | 1030 | 060A30 | S30C | XC32 | |
| 35 | 35 | 1035 | 060A35 | S35C | XC38TS | |
| 40 | 40 | 1040 | 080A40 | S40C | XC38H1 | |
| 45 | 45 | 1045 | 080M46 | S45C | XC45 | |
| 50 | 50 | 1050 | 060A52 | S50C | XC48TS | |
| 55 | 55 | 1055 | 070M55 | S55C | XC55 | |
| 60 | 60 | 1060 | 080A62 | S58C | XC55 | |
| 15Mn | 15Г | 10,161,115 | 080A17 | SB46 | XC12 | |
| 20Mn | 20Г | 10,211,022 | 080A20 | XC18 | ||
| 30Mn | 30Г | 10,301,033 | 080A32 | S30C | XC32 | |
| 40Mn | 40Г | 10,361,040 | 080a40 | S40C | 40M5 | |
| 45Mn | 45Г | 10,431,045 | 080A47 | S45C | ||
| 50Mn | 50Г | 10,501,052 | 030A52 | S53C | XC48 | |
| 080M50 |
| Grade | Standard | Chemical Composition | Deoxygenation Method | ||||
| C | Mn | Si | S | P | |||
| ≤ | |||||||
| Q195 | - | 0.06~0.12 | 0.25~0.50 | 0.3 | 0.05 | 0.045 | F,b,Z |
| Q215 | A | 0.09~0.15 | 0.25~0.55 | 0.3 | 0.05 | 0.045 | F,b,Z |
| B | 0.045 | F,b,Z | |||||
| Q235 | A | 0.14~0.22 | 0.30~0.65 | 0.3 | 0.05 | 0.045 | F,b,Z |
| B | 0.12~0.20 | 0.30~0.70 | 0.045 | ||||
| C | ≤0.18 | 0.35~0.18 | 0.04 | 0.04 | Z | ||
| D | ≤0.17 | 0.035 | 0.035 | TZ | |||
| Q255 | A | 0.18~0.28 | 0.40~0.70 | 0.3 | 0.05 | 0.045 | F,b,Z |
| B | 0.045 | ||||||
| Q275 | - | 0.28~0.38 | 0.50~0.80 | 0.35 | 0.05 | 0.045 | b,Z |
| Carbon structural steel chemical composition list | ||||||
| Model | Grade | chemical composition | ||||
| C | Mn | Si | S | P | ||
| no greater than | ||||||
| Q195 | - | 0.06-0.12 | 0.25-0. 50 | 0.3 | 0. 05 | 0.045 |
| Q215 | A | 0. 09-0.15 | 0. 25-0.55 | 0.3 | 0. 05 | 0. 045 |
| B | 0. 045 | |||||
| Q235 | A | 0.14-0.22 | 0. 30-0. 65 | 0.3 | 0. 05 | 0.045 |
| B | 0.12-0.20 | 0. 30-0.70 | 0. 045 | |||
| C | ≤0.18 | 0. 35-0.80 | 0.04 | 0.04 | ||
| D | ≤0.17 | 0. 035 | 0. 035 | |||
| Q255 | A | 0. 18-0. 28 | 0.40-0.70 | 0.3 | 0. 05 | 0.045 |
| B | 0. 045 | |||||
| Q275 | - | 0. 28-0.38 | 0. 50-0.80 | 0. 35 | 0.05 | 0. 045 |
| Q345 | A | ≤0.20 | ≤1.70 | ≤0.50 | 0. 035 | 0.035 |
| B | 0. 035 | 0. 035 | ||||
| C | 0. 03 | 0.03 | ||||
| D | ≤0.18 | 0. 025 | 0.03 | |||
| E | 0.02 | 0. 025 | ||||
| Q390 | A | ≤0.20 | ≤1.70 | ≤0.50 | 0. 035 | 0.035 |
| B | 0. 035 | 0.035 | ||||
| C | 0.03 | 0.03 | ||||
| D | 0. 025 | 0.03 | ||||
| E | 0.02 | 0. 025 | ||||
| Q420 | A | ≤0.20 | ≤1.70 | ≤0.50 | 0. 035 | 0.035 |
| B | 0. 035 | 0. 035 | ||||
| C | 0.03 | 0. 03 | ||||
| D | 0. 025 | 0.03 | ||||
| E | 0.02 | 0.025 | ||||
| Q460 | C | ≤0.20 | ≤1.80 | ≤0.60 | 0. 03 | 0.03 |
| D | 0. 025 | 0.03 | ||||
| E | 0.02 | 0. 025 | ||||
| Q500 | C | ≤0.18 | ≤1.80 | ≤0.60 | 0.03 | 0.03 |
| D | 0.025 | 0.03 | ||||
| E | 0.02 | 0. 025 | ||||
| Q550 | C | ≤0.18 | ≤2.00 | ≤0.60 | 0. 03 | 0.03 |
| D | 0.025 | 0.03 | ||||
| E | 0. 02 | 0.025 | ||||
| Q620 | C | ≤0.18 | ≤2.00 | ≤0.60 | 0.03 | 0.03 |
| D | 0.025 | 0.03 | ||||
| E | 0. 02 | 0.025 | ||||
| Q690 | C | ≤0.18 | ≤2.00 | ≤0.60 | 0.03 | 0.03 |
| D | 0. 025 | 0.03 | ||||
| E | 0.02 | 0. 025 | ||||
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