China Hot Rolled Mild Steel Sheet SS400
product details
product description
DO YOU KNOW IT?
Mild steel sheet is widely used due to their affordability, ease of fabrication, and excellent welding properties. It is used in construction, shipbuilding and the fabrication of various steel structures. These boards can be easily cut, drilled and shaped to suit specific requirements, making them a versatile choice for different projects.
| Product Name |
Hot Rolled Sheet |
| Size |
3x1219mm 3.5x1500mm 4x1600mm 4.5x2438mm etc. ,customized |
| Standard |
AISI, ASTM, BS, DIN, GB, JIS |
| Material |
Carbon steel: Q195-Q420 Series, SS400-SS540 Series, S235JR-S355JR Series, ST Series, A36-A992 Series, Gr50 Series, etc. |
|
| Surface |
mild steel plain finish, hot dip galvanized, colour coated, according to clients requirement, etc. |
| Size Tolerance |
+/- 1%~3% |
| Packing |
Bundle, or with all kinds of colors PVC or as your requirements |
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Low carbon
The carbon content of SS400 is controlled at a low level, which gives it convenience. High-quality welding connections can be achieved without complex preheating or post-heat treatment, which greatly reduces processing costs and time.
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Strength
SS400 steel plate ensures stable mechanical properties through optimized composition and hot rolling process. It is enough to meet the stringent strength requirements of most structural parts.
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Mature technology
Using advanced hot rolling technology, the plate has good surface flatness, high dimensional accuracy, and uniform and dense internal structure, laying a solid foundation for subsequent cutting, bending, welding and other processing.
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Economical
While meeting basic structural strength requirements, SS400 optimizes alloy costs to the maximum extent, making it one of the most cost-effective structural steels on the market.
Detailed explanation of standards and core parameters
SS400 mild steel plate is produced in strict accordance with JIS G 3101 standard. Its core chemical composition and mechanical properties are as follows:
| Element |
Content requirement (maximum) |
Core impact |
| Carbon (C) |
0.18% |
Determines strength, hardness and weldability |
| Manganese (Mn) |
0.60% |
Increases strength and toughness |
| Phosphorus (P) |
0.050% |
Affects cold brittleness |
|
| Sulfur (S) |
0.050% |
Affects hot brittleness and weldability |
| Silicon (Si) |
0.35% |
Deoxidizes, affects strength and toughness |
|
| Thickness t (mm) |
Yield strength ReH (MPa) Minimum value |
Tensile strength Rm (MPa) |
Elongation after fracture A (%) Minimum value (gauge length 50mm) |
| t ≤ 16 |
245 |
400-510 |
21 |
| 16 < t ≤ 40 |
235 |
400-510 |
21 |
| 40 < t ≤ 100 |
215 |
400-510 |
20 |
Applications
"Steel Bones" in the Construction Field
Hot rolled steel sheet ss400 is widely used in industrial plants, warehouses, steel structure beams, columns, trusses, platforms, stairs and other load-bearing and non-load-bearing components. Its reliable strength and excellent weldability are the core guarantee of building safety.
A solid foundation for mechanical equipment manufacturing
As an ideal material for various equipment frames, bases, protective covers, hoppers, and conveying equipment components, SS400 balances strength, processability, and cost.
A reliable partner for the vehicle and transportation industry
Hot rolled sheet ss400 is commonly used in truck chassis parts, car frame, trailer components, etc., effectively controlling the weight of the vehicle body while ensuring the load-bearing capacity.
A wise choice for general structural parts
Mild carbon steel is suitable for many occasions that require stable structural support, such as shelves, workbenches, brackets, frames, fences, simple bridges, etc.
Significant processing convenience advantages
Carbon steel coil is extremely suitable for conventional processing such as shearing, punching, bending, drilling, welding (arc welding, gas shielded welding, etc.), which significantly reduces the manufacturing difficulty and labor cost.
Key factors for selecting high-quality suppliers
Quality assurance is the bottom line: Make sure that the supplier can provide a material certificate (MTC) that meets the JIS G 3101 standard and has a complete quality control system. Original materials from well-known large steel mills are reliable endorsements of quality.
Complete specifications to meet needs: High-quality suppliers should be able to flexibly provide a variety of thickness (common 1.5mm - 200mm+), width (common 1000mm, 1219mm, 1250mm, 1500mm, 1800mm, 2000mm, etc.), length (usually 6000mm, but also customizable) options, and be able to handle custom cutting requirements.
Professional services create value: Seeking suppliers who can provide professional material selection advice, processing technology support, and logistics solutions, their added value often far exceeds the product itself.
Transparent and competitive prices: Under the premise of ensuring quality, market-competitive prices and transparent pricing methods are essential.
[LISHENGDA Company]: Your Trusted Partner for SS400 Hot Rolled Plate
We have been deeply involved in the steel trade field for many years, focusing on providing customers with high-quality, cost-effective SS400 hot-rolled low-carbon steel plate solutions:
Direct supply from the source, quality assurance: We directly cooperate with large domestic and foreign first-line steel mills to ensure that each batch of SS400 plates comes with an authoritative original factory warranty (MTC) and 100% complies with JIS G 3101 standards.
Massive spot, lightning delivery: Large modern warehouses always have thousands of tons of SS400 hot-rolled coils and hot-rolled flat plates in stock, covering a wide range of specifications from thin plates to thick plates. Support on-demand flattening, striping, and cutting to meet your personalized size needs.
Price advantage, cost controllable: Relying on large-scale procurement and efficient operation, we provide you with highly competitive SS400 hot-rolled steel plate prices, and a clear and transparent pricing system allows you to purchase without worry.
Expert team, full support: With an experienced technical consultant team, we provide you with all-round professional support from material selection, processing technology recommendations to application solutions.
One-stop service, save worry and effort: Provide value-added services such as precise cutting and efficient logistics and distribution to help you significantly reduce the overall procurement cost and focus on core business.
Act now to get your exclusive SS400 solution!
Whether you are involved in large-scale steel structure projects, manufacturing heavy machinery and equipment, or need reliable general structural materials, SS400 hot-rolled low-carbon steel plates can be a solid backing for your project with its excellent cost-effectiveness and stable performance.
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Quotation
Questions ◢
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Q.
What grade is SS400 equivalent to in China?
A.
SS400 is closest to the Q235B grade in the Chinese national standard (GB/T 700) in terms of chemical composition and mechanical properties, and is often regarded as an equivalent grade. However, specific applications still require attention to standard detail differences and customer requirements.
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Q.
Can SS400 be bent? What are the requirements for the bending radius?
A.
Yes, SS400 has good cold bending performance. The minimum bending radius usually depends on the plate thickness (t). Generally speaking, for a 90-degree bend, the recommended minimum inner bending radius is about 1.0t - 1.5t (i.e. 1 to 1.5 times the plate thickness). More precise requirements require reference to specific processing specifications or process tests.
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Q.
Is SS400 steel plate easy to weld? Does it need to be preheated?
A.
SS400 has excellent weldability due to its low carbon content and is a commonly used steel for welded structures. For most conventional thicknesses (e.g. ≤ 25mm) and welding at normal ambient temperatures (e.g. SMAW, GMAW), preheating is usually not required. However, in severe cold environments, thick plate welding, or when there is a large degree of restraint, it is recommended to consider appropriate preheating measures based on the welding procedure qualification (WPS).
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Q.
Is SS400 steel plate corrosion-resistant?
A.
SS400 is a carbon structural steel and does not have inherent strong corrosion resistance. Its surface will rust in corrosive environments such as humidity, acid rain, coastal or industrial pollution. If corrosion resistance is required, weathering steel (e.g. SPA-H, Corten) or stainless steel should be selected, or SS400 should be surface treated (e.g. spray paint, hot-dip galvanizing).
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Q.
How to distinguish the genuine SS400 hot-rolled plate?
A.
The most reliable basis is to check the original material certificate (MTC) provided by the supplier, which should clearly indicate the brand (SS400), standard (JIS G 3101), furnace batch number, specification, chemical composition, actual mechanical property values and the stamp of the steel mill. At the same time, observing the surface quality (flatness, oxide scale state) and edge condition of the plate is also an auxiliary means of judgment. Choosing a reputable large trader or purchasing directly from the steel mill is an effective way to ensure the authenticity of the product.
