JIANGSU CHINA STEEL UNION INDUSTRIAL CO.,LTD.
江苏中钢联合实业有限公司
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ASTM A479 316 Stainless Steel Hex Bar - 25mm Flats, Chemical Plant Equipment Material
ASTM A479 316 stainless steel hex bar (25mm flats) is a high-performance material designed for demanding chemical processing environments. Manufactured to ASTM A479 specifications, this hex bar combines superior corrosion resistance, elevated temperature stability, and mechanical strength. The 316 grade’s addition of molybdenum (2–3%) enhances resistance to chlorides, acids, and caustic solutions, making it ideal for reactors, piping systems, and valves in chemical plants. With precision-machined 25mm flat surfaces and a uniform grain structure, it ensures reliability in aggressive media, including sulfuric acid, brine, and organic solvents.
| Parameter | Details |
|---|---|
| Material | 316 Stainless Steel (UNS S31600) |
| Element Composition | Cr: 16–18%, Ni: 10–14%, Mo: 2–3%, C: ≤0.08%, Mn: ≤2%, Si: ≤1%, Fe: Balance |
| Standard | ASTM A479, ASME SA479, EN 10088-1 |
| Dimensions | Hexagonal, 25mm flats (±0.1mm tolerance), lengths 1–6 meters |
| Surface Finish | Pickled, blasted, or polished (Ra ≤3.2μm) |
| Tensile Strength | ≥515 MPa |
| Hardness | ≤95 HRB |
| Certifications | NACE MR0175, PED 2014/68/EU, ISO 9001 |
| Applications | Reactor components, heat exchangers, pump shafts, valve bodies |
① Extreme Chemical Resistance
Molybdenum-enriched 316 stainless steel resists pitting and crevice corrosion in chloride-rich or acidic environments, outperforming 304 grades.
② ASTM A479 Compliance
Guaranteed dimensional accuracy and metallurgical integrity for high-stress applications in chemical and petrochemical industries.
③ High-Temperature Durability
Maintains structural stability up to 870°C, suitable for heat exchangers and exhaust systems exposed to thermal cycling.
④ Versatile Fabrication
Precision hexagonal bars simplify machining into bolts, nuts, and custom fittings for complex chemical equipment.
⑤ Global Certifications
NACE MR0175 compliance ensures compatibility with sour gas environments, while PED certification supports pressure equipment safety.
⑥ Surface Finish Options
Customizable finishes (e.g., pickled for weldability or polished for cleanroom compatibility) meet diverse operational needs.
Why Choose This Product?
Engineered for critical chemical applications, ASTM A479 316 hex bars deliver unmatched resistance to corrosion, heat, and mechanical stress. Their precision manufacturing and compliance with global standards ensure seamless integration into equipment requiring long-term reliability in harsh operational conditions.
FAQ
Q: Why choose us?
A: Our company have been in steel business for more than ten years, we are internationally experienced, professional, and we can provide variety of steel products with high quality to our clients.
Q: Can provide OEM/ODM service?
A: Yes. Please feel free to contact us for more details discuss.
Q: How is your Payment Term?
A:One is 30% deposit by TT before production and 70% balance against copy of B/L; the other is Irrevocable L/C 100% at sight.
Q: Can we visit your factory?
A: Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case.
Q: Can you provide sample?
A: Yes, for regular sizes sample is free but buyer need to pay freight cost.
Q: How long is your delivery time?
A: Our daily inventory is more than 8000 tons, so for common product size, just need 3 days from stocks; if the special size from new production, delivery 15-20 days.