Q235 Steel
Q235 steel is generally more cost-effective than many other steel grades. Its wide availability and low production cost make it an economical choice for a variety of projects. With moderate corrosion resistance, it is usually coated with a protective layer such as galvanizing, painting, or other anti-corrosion treatment to prevent rust, and can be used for outdoor structures and containers, vehicles, towers, rebars, etc. Wanzhi Steel specializes in producing all products of Q235 steel, including cold-rolled and hot-rolled coils, wires, sheets, rods, rebars, pipes, H/I beams, C channels, and accepts customization of thickness, width, diameter, and length. If you are interested, welcome to contact us to learn more.
Q235 mild carbon steel sheet plate hot rolled
hot rolled coil steel grades Q235 in sheets
q235 CRB 600H High Strength Steel Bar
Q235 Steel Specification
| Item | Q235 Steel |
| Place of Origin | Shandong, China |
| Delivery Time | 15-21 days |
| Material | Carbon Steel |
| Processing Service | Welding, Punching, Cutting, Bending, Decoiling |
| Product type | Wire, coil, sheet, rod, flat bar, plain round bar, channel steel, tube, rebar, I beam, C channel |
| Color | Carbon Black |
| Technique | Cold Rolled, cold drawn, hot rolled |
| Width | Customizable |
| Length | Customizable |
| Thickness | Customizable |
| Standard | AISI, ASTM, DIN, JIS, GB, EN |
| Surface | Non-oiled, anti-rust oil, hot galvanized, cold galvanized |
| Payment term | TT 30% Advance + 70% Balance |
| Sample | Free Available |
| Price Item | FOB, CIF, EXW, etc |
| Packing | Standard export packaging |
| Certification | ISO 9001, SGS, ABS, BV |
| MOQ | 10 tons |
| Transportation | By sea, by land |
What is Q235 steel?
Q235 steel is a Chinese standard carbon structural steel. It is equivalent to ASTM A36 in the United States, SS400 Vietnam/Japanese JIS and similar to S235JR in Europe. It is divided into four grades: Q235A, Q235B, Q235C, and Q235D, with a compressive strength of 235MPa (16mm thick rebar or steel plate). Since it is a low carbon steel (up to 0.22%), it can be used in production without heat treatment.
AISI BS DIN JIS 1080 Hot Rolled Flat Steel Bar
hot-rolled-alloy-wire
Q235 16# Steel Channel galvanized
Q235 character interpretation
1) Q: represents the yield point (σs),
2) 235: represents the yield strength,
3) Q235 represents the pressure that the steel can withstand per unit area, which is 235MPa.
It has good plasticity and toughness, is easy to process and weld, and has a relatively low price.
Physical properties
| Physical Properties | |
| Density, g/cm3 | 7.85 |
| Melting point, ℃ | about 1493 |
| Specific heat capacity, J/(Kg·K) | 470 at 20 ℃ |
| Electrical resistivity, μΩ·m | about 0,15 (20 ℃) |
| Elastic modulus, GPa (kN/mm2) | 200 |
| Thermal conductivity, (W/m·K) | 53-49 (0-100 ℃) |
| Coefficient of thermal expansion, (10-6/K) | 11.3-11.6 (20 ℃) |
| Young’s modulus, GPa (kN/mm2) | 200 |
| Poisson’s ratio | 0.24-0.28 |
Q235 Q355 Galvanized Welded Wire Mesh
Black A36 S235 S355jr Q235 carbon steel sheet
Galvanized Q235 steel factory in China
Chemical composition
The chemical composition of Q235 steel includes carbon (C), silicon (Si), manganese (Mn), sulfur (S), phosphorus (P) and other elements. Among them, carbon, silicon and manganese are the main alloying elements, which play a major role in the mechanical properties of steel.
According to the Chinese national standard GB/T 700, the chemical composition (mass percentage) of Q235 steel is as follows:
1. Carbon (C): 0.14-0.22%
2. Silicon (Si): ≤0.35%
3. Manganese (Mn): 0.30-0.70%
4. Phosphorus (P): ≤0.045%
5. Sulfur (S): ≤0.045%
These elements work together to give steel its strength, toughness, and weldability.
Q235 A, B, C, D Mechanical Properties
Tensile Strength: The tensile strength of Q235 steel is usually between 370 and 500MPa.
Yield strength: The minimum of Q235 steel is 235MPa.
Elongation: The elongation at break of Q235 steel is usually about 26%.
Hardness: Hardness indicates the ability of Q235 steel to resist deformation and wear. Its Brinell hardness is about 100-130 HB. This moderate hardness ensures good machinability, processability and sufficient wear resistance.
(TSET SAMPLE: 16mm steel bar(Mpa=N/mm2))
Cold Rolled Q235 Ms steel Sheet
SAE 1008 wire rod 5.5mm mild steel wire rods
12mm Iron Rods Deformed Rebar Construction
Uses
It is popular in general structural applications such as buildings, bridges and machines. It can be rolled into wire rod or round steel, square steel, flat steel, angle steel, I-beam, channel steel, other profiles, and steel plates. These products are widely used in welding structures in construction projects, making steel bars or building plants, high-voltage transmission towers, bridges, vehicles, boilers, containers, etc., and can also be used as mechanical parts with low performance requirements, such as rods, connecting rods, screws, nuts, rings, scaffolding, brackets, etc. with less stress. In addition, Q235 steel is often used as the raw material for galvanized steel and other coated steel products.
· Metal furniture frames
· Gearbox and engine parts
· Agricultural machinery
· Railway tracks
· Purlin and roof structures
· Structural beams and columns
· Tool cabinets and workbenches
· Office desks and chairs
Purlin and roof structures
Agricultural machinery
Structural framework
Features
1. Low carbon content: Q235 steel has a carbon content of less than 0.22%, ensuring its excellent weldability and formability. The low carbon content also reduces the risk of brittleness during manufacturing and improves the ductility of the material.
2. High tensile strength: Typically between 370 and 500 MPa. This high strength enables it to withstand heavy loads and is suitable for structural applications.
3. Good ductility and toughness: It can be stretched or bent without breaking. In addition, good toughness enables it to absorb energy and resist breaking under impact or dynamic load conditions.
4. Excellent weldability: Q235 steel has extremely high weldability and can be easily connected by various welding methods, including arc welding, resistance welding and gas welding. It forms a strong and reliable weld for efficient manufacturing and construction.
5. Wide range of uses: Commonly used in structural parts such as beams, columns, trusses, etc. in buildings and bridges, and is also used in the manufacture of machinery, automotive parts, general steel, etc.
6. Corrosion resistance: Galvanized Q235, coated Q235 steel enhances its inherent corrosion resistance.
7. Hardness: Q235 steel has medium hardness, which contributes to its machinability. It can be easily cut and drilled using common tools.
8. Compliance with quality standards: Q235 steel plates adhere to strict quality standards, including Chinese standards (PRC) and international standards such as JIS (Japan), ASTM (USA), DIN (Germany), and EN (Europe).
9. Variety of sizes: Width from 1510mm to 2300mm, thickness from 1.5mm to 100mm, length from 6m to 12m. Wanzhi Steel provides full-size customization and all processing services.
Q235 Steel Plate
JIS SS400 Steel Channel
Q235 Steel Q235A Q235B Q235C Q235D
Q235 Carbon Steel Grade Comparison
According to the GB/T 700-2006 standard, carbon structural steel Q235 is divided into four categories: A, B, C, and D according to metallurgical quality.
| Steel grade | Carbon (C %)≤ | Silicon (Si %)≤ | Manganese (%) ≤ | Phosphorus (P%) ≤ | Sulfur (S%) ≤ |
| Q235A | 0.22 | 0.35 | 1.4 | 0.045 | 0.05 |
| Q235B | 0.2 | 0.35 | 1.4 | 0.045 | 0.045 |
| Q235C | 0.17 | 0.35 | 1.4 | 0.04 | 0.04 |
| Q235D | 0.17 | 0.35 | 1.4 | 0.035 | 0.035 |
| Quality Greade: A≤B＜C＜D | |||||
Q235 steel quality is increased from grade A to grade D. This increase in grade is reflected in the reduction of the maximum allowable percentages of carbon (C), phosphorus (P), and sulfur (S). Lower carbon content generally increases flexibility, while lower phosphorus and sulfur content increase the toughness and weldability of the steel.
Q235 Steel Rebar ASTM GR60,BS GR460,SS400
Q235 steel tube pipe
Q235 Steel Wire Rod
Comparison of Q235A/B/C/D properties and applications
| Q235 | Q235A | Q235B | Q235C | Q235D |
| Properties | Basic version of Q235 | Better quality than Q235A, with slightly better mechanical properties | Q235C has enhanced performance, especially in low temperature environments | Q235D’s strongest performance, especially in low-temperature environments |
| Features | Good weldability and formability Yield strength: 235MPa Tensile strength: 370- 500MPa Elongation: about 26% | Improved toughness Better weldability Slightly higher tensile strength and elongation | Improved impact resistance at low temperatures Yield strength: 235MPa Tensile strength: 370- 500MPa Elongation: 20-23%, depending on the specific grade | Improve impact resistance at low temperatures Yield strength: 235MPa Tensile strength: 370- 500MPa Elongation: 20-23% |
| Applications | Building frames Bridges Structural beams General Manufacturing | Heavy construction projects Machinery parts Automotive parts Large steel structures | Offshore structures; Cold storage facilities; Bridges in cold climates; Highly stressed structural components | Applications for better toughness and durability Cold storage facilities Bridges in cold climates Offshore structures Highly stressed structural components |
Comparison of the features of Q235 and A36/S235/SS400/Q345
| Q235 | A36 | S235 | SS400 | Q345 | |
| Features | Yield strength 235 MPa Tensile strength 370-500 MPa Silicon and manganese content slightly higher than A36 Compared with the old standard GB700-79 grades, Q235 is equivalent to A3, C3 and other grades | Yield strength is about 235 MPa Tensile strength ranges from 400-550 MPa | Very similar to Q235 in mechanical properties, slightly different in chemical composition | SS400 is a Japanese standard steel with similar mechanical properties to Q235 Good weldability and machinability | Yield strength is 345MPa Low alloy steel with higher strength and toughness Equivalent to 12MnV, 16Mn, 16MnRE, 18Nb, 14MnNb and other grades. |
| Application | General construction, structural parts and mechanical parts manufacturing | It is widely used in the United States for structural applications such as building frames, bridges and oil rigs. | Construction industry, oil and gas industry, water transport industry as well as structural applications and conveying of fluids and gases. | Ideal for wastewater treatment facilities, customers seeking high-quality, durable, strong and reliable pipes, oil and gas industry or water transport industry | High-rise buildings, large bridges, heavy machinery, oil and gas pipelines, etc. |
| Cost | Cheap | Relatively expensive | Slightly more expensive than Q235 | Cheap | Relatively high |
Q235 Welded Hot Dipped Galvanized Steel Pipe
Q235 hot rolled I steel beam Supplier
Steel Angle Q235 hot dip galvanized
Q235 VS. ASTM A36, S235, SS400 and E250 Steel
A36, SS400, S235JR, and E250 steels have a similar chemical composition and mechanical properties to Q235 steel and are all carbon structural steels.
Table 1 – Comparison of chemical composition
| Chemical Composition % (≤) | ||||||||||
| Country | Standard | Steel Grade | Quality Grade | C | Si | Mn | P | S | Cu | N |
| China | GB/T 700 | Q235 | Q235A | 0.22 | 0.35 | 1.40 | 0.045 | 0.050 | 0.30 | 0.012 |
| Q235B | 0.20 | 0.35 | 1.40 | 0.045 | 0.045 | 0.30 | 0.012 | |||
| Q235C | 0.17 | 0.35 | 1.40 | 0.040 | 0.040 | 0.30 | 0.012 | |||
| Q235D | 0.17 | 0.35 | 1.40 | 0.035 | 0.035 | 0.30 | 0.012 | |||
| US | ASTM A36 | A36 | 0.26 | 0.40 | 1.35 | 0.040 | 0.050 | 0.20 | – | |
| European | EN 10025-2 | S235 | S235JR (1.0038) | 0.17 | – | 1.40 | 0.035 | 0.035 | 0.55 | 0.012 |
| S235J0 (1.0114) | 0.17 | – | 1.40 | 0.030 | 0.030 | 0.55 | 0.012 | |||
| S235J2 (1.0117) | 0.17 | – | 1.40 | 0.025 | 0.025 | 0.55 | – | |||
| Japan | JIS G3101 | SS400 | – | – | – | 0.050 | 0.050 | – | – | |
| India | IS 2062 | E250 | E250A | 0.23 | 0.040 | 1.50 | 0.045 | 0.045 | 0.20-0.35 | 0.012 |
| E250B | 0.22 | 0.040 | 1.50 | 0.045 | 0.045 | 0.20-0.35 | 0.012 | |||
| E250C | 0.20 | 0.040 | 1.50 | 0.040 | 0.040 | 0.20-0.35 | 0.012 | |||
Q235B Stainless Steel Channel
SS400 Q235 ASTM JIS hot rolled steel coil
Q235 hot rolled ribbed steel mesh
Table 2-Yield Strength Comparison
| Yield Strength (≥ N/mm2); Dia. (d) mm | Tensile Strength | |||||||
| Country | Steel Grade | d≤16 | 16 < d ≤40 | 40 < d ≤60 | 60 < d ≤100 | 100 < d ≤150 | 150 < d ≤200 | N/mm2 |
| China | Q235 | 235 | 225 | 215 | 215 | 195 | 185 | 370-500 |
| US | A36 | 250 MPa (d ≤ 200mm) | 400-550 | |||||
| European | S235 | 235 | 225 | 215 | 215 | 195 | 185 | 360-510 |
| Japan | SS400 | 245 | 235 | 215 | 215 | 205 | 205 | 400-510 |
S235 has 3 quality grades, including S235JR, S235J0 and S235J2.
Table 3 – India Standard
| Yield Strength (≥ N/mm2); Dia. (d) mm | Tensile Strength | |||||
| Country | Standard | Steel Grade | d<20 | 20 ≤ d ≤40 | >40 | N/mm2 |
| India | IS 2062 | E250 | 250 | 240 | 230 | ≥ 410 |
1MPa = 1 N/mm2.
Q235 SS400 Carbon Steel Round Bar, HR,CR Strip
ASTM JIS Q235B A36 Carbon Steel Coil HR Sheet Coil
Q235 Steel Equivalent Standard
| China | USA | Germany | Japanese | France | UK | ISO |
| GB | ASTM | DIN | JIS | NF | BS | ISO |
| Q235A Steel | Gr.D (σS230MPa) | Ust37-2 RSt37-2 | SS440 SM400A (σS245MPa) | 080A15 (σS235MPa) | E235B (σS235MPa) | |
| Q235B Steel | Gr.D (σS230MPa) | S235JR S235JRG1 S235JRG2 (σS235MPa) | SS440 SM400A (σS245MPa) | S235JR S235JRG1 S235JRG2 (σS185MPa) | 080A15 S235JR S235JRG1 S235JRG2 (σS185MPa) | E235B (σS235MPa) |
| Q235C Steel | Gr.D (σS230MPa) Gr.65 (σS240MPa) | S235JO (σS235MPa) | SM400A SM400B (σS245MPa) | S235JO (σS235MPa) | 080A15 S235JO (σS235MPa) | E235C (σS235MPa) |
| Q235D Steel | Gr.D (σS230MPa) | S235J2G3 S235J2G4 (σS235MPa) | SM400A (σS245MPa) | S235J2G3 S235J2G4 (σS235MPa) | S235J2G3 S235J2G4 (σS235MPa) | E235D (σS235MPa) |
IS 2062 Grade B Plate Q235B steel Supply
Q235 Steel Wire Rod Chinamanufacturer
China Wanzhi Steel Factory
Q235 Steel Sheet/coil/rod/rebar/channel Manufacturer – Wanzhi Steel
Our Q235 steel products include:
1. Q235 hot-rolled/cold-rolled steel coils, Q235 hot-rolled/cold-rolled steel plates. (HR&CR Coil/Sheet)
2. Q235 rebar/deformed rebar/rebar in coil/steel wire rod/steel wire.
3. Q235 welded/seamless steel pipes (round/square/rectangular tubes).
4. Q235 H-beam/flat bar/C-channel/I-beam/Angle bar/Twisted Square Bar.
We also produce embossed and coated products, such as aluminized zinc/ZAM/galvanized steel coils, corrugated/checker/perforated galvanized sheets, PPGI/PPGL steel coils and sheets, roofing panels/appliance panels/sandwich panels/whiteboards, etc.
S275jr Ss400 A36 Q235B Wire Rod, Square Steel Tube
Z30-Z275 DX51D Galvanized Steel Sheet
Zinc-coated coils, PPGI steel coils
If you have other questions, don’t hesitate to Inquire Online
or send an email to [email protected].
Wanzhi Steel is an ISO 9001-certified steel factory located in Hebei, China. It has been specializing in the production of Q195, Q235 A/B/C/D, Q345/Q355 Steel products for 15+ years. With high-quality products and excellent services, its products have been exported to over 120 countries worldwide.
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