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Hot Rolled Steel Strip SS400
Hot-rolled steel strip SS400 is a carbon structural steel material widely used in the fields of construction, machinery manufacturing and industrial equipment.
As a classic grade in the Japanese Industrial Standard (JIS G 3101), it has become one of the best-selling steel categories in the Asian market due to its excellent mechanical properties, high cost performance and processing adaptability.
This product is formed by high-temperature rolling process, with a unique blue-gray oxide layer on the surface, a thickness range of 0.8-25mm, and a width of 50-2000mm, which can meet diverse processing needs.
Technical characteristics of SS400 hot-rolled steel strip
Chemical composition and mechanical properties
| C (Carbon) | ≤0.29% |
| Si (Silicon) | ≤0.35% |
| Mn (Manganese) | ≤1.40% |
|
P (Phosphorus) |
≤0.050% |
|
S (Sulfur) |
≤0.050% |
Mechanical properties comparison table:
| Index | SS400 standard value | Q235B | Advantages and differences |
|---|---|---|---|
| Tensile strength | 400-510MPa | 375-500MPa | +5% |
| Yield strength | ≥245MPa | ≥235MPa | +4.2% |
| Elongation after fracture | ≥17% | ≥26% | More suitable for cold processing |
What is the production process?
Slab reception: Qualified continuous casting slabs are transported to the hot rolling slab warehouse by rollers or cranes, and the slab numbers are checked and received.
Slab heating: The slabs enter the heating furnace and are heated to the specified rolling temperature to ensure good plasticity and deformation during the rolling process.
Descaling: Iron oxide scale will form on the surface of the heated slab, which needs to be removed by a high-pressure water descaling device to ensure the surface quality of the strip.
Descaling: Iron oxide scale will form on the surface of the heated slab, which needs to be removed by a high-pressure water descaling device to ensure the surface quality of the strip.
Rough rolling: The descaled slab enters the rough rolling mill for rolling, and after multiple passes of rolling, an intermediate slab is formed.
Finishing rolling: The intermediate slab enters the finishing mill for further rolling, and is finally rolled into a strip of the required thickness.
Application
Construction field
Steel structure engineering: carbon steel strip is used for the manufacture of plant trusses, steel beams, steel columns and supporting parts, providing the bearing capacity of the main structure of the building;
Architectural decoration: processed into decorative parts such as railings, handrails, door and window frames, and achieved beauty and corrosion resistance through surface treatment;
Foundation engineering: making foundation fixing devices such as anchor bolts and embedded parts.
Mechanical manufacturing field
Equipment frame: As the frame structure material of machine tools, cranes, and conveyors, it bears the dynamic load during mechanical operation;
Parts processing: Manufacturing general mechanical parts such as gears, sleeves, and flanges through cutting, stamping and other processes;
Mold manufacturing: Ss400 steel strip is used for the frame and support structure of the mold to ensure processing stability.
Transportation field
Automobile manufacturing: Applied to automobile chassis, frame and body structure parts to meet safety and molding process requirements;
Railway and shipbuilding: Manufacturing track connectors, railway vehicle compartment structures and ship decks, bulkheads and other parts;
Aerospace: Steel dtrip is used for non-critical load-bearing parts such as aircraft fuselages and fuel tanks (special surface treatment is required).
Energy and power sector
Power facilities: manufacturing power tower frames, distribution cabinet brackets and wind turbine tower support structures;
Pipeline engineering: Hot rolled steel strip in coil is used in the manufacture of oil/gas pipeline brackets and some medium and low pressure pipelines.
Other industrial sectors
Storage equipment: Carbon steel strip in coil is used as load-bearing structural parts such as shelf columns and beams;
Heavy machinery: Hot rolled carbon steel strip is used for hydraulic press parts of engineering machinery, excavator bucket support plates, etc.;
Bridge engineering: participating in the manufacture of key structural parts such as bridge main beams and beams.
How to choose a high-quality supplier?
Check certification qualifications: confirm whether the supplier holds JIS factory certification.
Check inventory capacity: merchants with inventory are more reliable.
Compare processing services: preferably comprehensive service providers that provide laser cutting/slitting/surface treatment.
Ask about logistics timeliness: focus on regional warehousing layout.
High-Quality Standards
Our SS400 hot rolled steel strip is manufactured under strict quality control measures, ensuring compliance with international standards like JIS G3101.
Customizable Options
We offer tailored solutions to meet your specific requirements, including custom thicknesses, widths, and lengths.
Competitive Pricing
By optimizing our production processes, we provide high-quality SS400 hot rolled carbon steel strip at competitive prices.
Fast Delivery
With a well-established supply chain, we ensure timely delivery to keep your projects on track.
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