Sihe Steel
Sihe Steel
Explore our premium selection of ASTM A240 and JIS G4304 compliant stainless steel sheets, plates, and manufacturing solutions. Direct from Sihe Steel facilities with comprehensive material certification.
Grade 304 stainless steel is the definitive standard within the austenitic steel family, representing the most versatile and widely utilized alloy system globally. Characterized by its classic composition of 18% chromium and 8% nickel, this material provides a balanced combination of corrosion resistance, structural ductility, and high forming properties. Under standard designations including ASTM A240, JIS G4304 (SUS304), and EN 10088-2 (1.4301), the alloy functions reliably across extreme temperature ranges.
The corrosion resistance and mechanical integrity of 304 stainless steel are directly tied to its chemical tolerances. Maintaining these exact margins prevents phase instability during welding and forming operations.
| Element | Chromium (Cr) | Nickel (Ni) | Carbon (C) | Manganese (Mn) | Silicon (Si) | Phosphorus (P) | Sulfur (S) | Iron (Fe) |
|---|---|---|---|---|---|---|---|---|
| Min % | 18.00 | 8.00 | - | - | - | - | - | Balance |
| Max % | 20.00 | 10.50 | 0.08 | 2.00 | 0.75 | 0.045 | 0.030 | Balance |
Understanding mechanical limit thresholds helps design engineers optimize weight-bearing applications, pressure vessels, and architectural facades without structural compromise.
| Designation | Tensile Strength (MPa) Min | Yield Strength 0.2% Offset (MPa) Min | Elongation (% in 50mm) Min | Hardness (Rockwell B) Max | Elastic Modulus (GPa) |
|---|---|---|---|---|---|
| ASTM A240 / SUS304 | 515 | 205 | 40 | 92 HRB | 193 - 200 |
Procuring 304 stainless steel sheets and plates at scale requires an understanding of raw material pricing mechanisms. In bulk procurement, prices are rarely static; they are determined by standard global market rates, processing steps, and delivery factors.
The base cost of 304 series stainless steel is influenced by the London Metal Exchange (LME) nickel indexes and Ferrochrome costs. Beyond the base metal value, final invoice pricelists are computed with several structural add-ons:
Liaocheng Sihe Stainless Steel Material LTD is a manufacturer specializing in high-performance stainless steel coiled tubing, seamless tubing, sheets, and heat-exchanger components. Operating six advanced production lines, we strictly adhere to GB, ASTM, ASME, JIS, and EN manufacturing standards.
Our production facilities utilize modern metallurgy equipment, including real-time diameter and wall thickness profiling, to ensure precise product dimensions.
We feature an online bright annealing line that treats stainless steel in a controlled hydrogen atmosphere. This prevents oxidation and maintains a clean surface finish without acid pickling.
Every batch undergoes testing in our laboratories, including hydrostatic, pneumatic, tensile, flaring, and flattening tests, to ensure reliable field performance.
To support global procurement, we offer custom finishing and fabrication services, transforming raw sheets, plates, and tubes into project-ready components.
We support various materials (e.g., 304, 316L, 2205) and custom specifications, covering sheet thicknesses from 0.3mm to 50mm and tube diameters from 6.35mm to 19mm.
Our tube forming services include custom bending, spiral coiling, precision drawing, and custom lengths up to 10,000 meters for umbilical systems.
We provide waterjet, plasma, and high-precision fiber laser cutting to achieve close dimensional tolerances while minimizing thermal distortion on sheet edges.
Finishing capabilities include mechanical polishing, electro-polishing, hairline finishing, and protective film lamination to meet strict sanitary and architectural requirements.
We perform precise flanging and edge preparation for automotive exhaust systems, process plant piping, and industrial heat exchangers.
Type 304 stainless steel serves as a foundational material across various industrial sectors. Our products are selected for critical services where material reliability is paramount.
Sihe Steel maintains strict quality control systems. Our production processes are verified by international testing agencies and comply with key industry certifications.
As the steel industry moves toward lower carbon emissions, the production processes for 304 and 316 series stainless steels are changing to improve resource efficiency and reduce carbon intensity.
Modern stainless steel production increasingly incorporates recycled scrap metal using electric arc furnace (EAF) technologies. This process requires up to 60% less energy compared to producing steel from raw virgin ore. Minimizing trace contaminants during melting helps prevent phase instability and ensures consistent mechanical properties.
Industrial projects require full material traceability. We support these compliance needs by providing complete documentation with every shipment, including certified Mill Test Reports (MTRs) to ASTM A240 standards, EN 10204 3.1 certification, and detailed chemical analyses to verify project specifications.
In addition to flat-rolled sheets and plates, we offer a range of coiled tubing, capillary tubes, and welded piping to support industrial process lines.
Explore additional products from our facilities, including custom heat exchanger tubes, flexible seamless coil lines, and specialty alloy components.
2205 duplex stainless steel containing balanced austenitic and ferritic microstructures for high-chloride applications.
1/2 inch coiled stainless steel tubing manufactured for high-pressure industrial control lines.
High-temperature furnace tubes manufactured to withstand continuous oxidation up to 1035°C.
