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Food-Grade Stainless Steel Rod | 310S & 309S Alloys
Food-Grade Stainless Steel Rod | 310S & 309S Alloys
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Food-Grade Stainless Steel Rod | 310S & 309S Alloys
Product Specifications
| Parameter | Details |
|---|---|
| Material Grades | 310S (06Cr25Ni20), 309S (022Cr24Ni13), 304 (ASTM A276) |
| Diameter Range | Round Rods: 3–600mm; Threaded Rods: 3/16 stainless steel rod (M6–M30); Customizable |
| Length | 0.1–12m (Standard), Custom Lengths Available |
| Hardness (HV) | 160–200 HV (310S/309S); 150–200 HV (304) |
| Tensile Strength | 520–860 MPa (310S); 520–700 MPa (309S); 505–860 MPa (304) |
| Surface Finish | Polished, BA (Bright Annealed), Passivated, Cold Drawn, Electroplated (Optional) |
| Welding Compatibility | threaded stainless steel rod (TIG/MIG with ER308/316L filler) |
| Certifications | ISO 9001, ASTM A276, EN 10088, FDA Compliance (304) |
Mechanical & Chemical Properties
Tensile Strength
310S stainless steel rod exhibits exceptional tensile strength (≥520 MPa), making it ideal for high-temperature environments like industrial furnaces and exhaust systems. Its 25% chromium and 20% nickel content ensure resistance to oxidation up to 1,150°C, while 309S alloy (with 24% Cr and 13% Ni) provides superior resistance to hydrogen sulfide (H₂S) in oil refineries. The 304 stainless steel rod, widely used in food processing, balances strength (505–860 MPa) with hygienic corrosion resistance.
Bend Strength
Bend strength for 3/16 stainless steel rod averages 60–70% of tensile strength, optimized for precision applications like medical equipment or food-grade machinery. Cold-drawn 310S rods achieve 30% higher bend resistance than standard grades, ideal for seismic-resistant structures.
Identification & Marking
Stainless steel rods are labeled per global standards:
- ASTM A276: Specifies 304/310S/309S chemical compositions.
- ISO 15510: Ensures traceability for threaded stainless steel rod batches.
- NACE MR0175: Certifies H₂S resistance for 309S oilfield applications.
Laser-etched markings include grade (e.g., 310S), tensile class, and manufacturer code.
Weight Calculation
Weight (kg) = Volume (m³) × Density (7,930 kg/m³ for austenitic steel).
Example for a 10mm diameter, 1m round rod:π × (0.005m)² × 1m × 7,930 kg/m³ ≈ 0.62 kg.
For 3/16 stainless steel rod (4.76mm diameter):Weight ≈ 0.15 kg/m. Custom weights vary with alloy density.
Why Stainless Steel Rusts: Causes & Solutions
While stainless steel resists corrosion via a chromium oxide layer (≥10.5% Cr), specific conditions trigger rust:
- Chloride Exposure: Saltwater or cleaning agents degrade passive layers. Use 316L or 310S.
- Galvanic Corrosion: Contact with carbon steel accelerates oxidation. Insulate metals with nylon spacers.
- Mechanical Damage: Scratches expose iron. Passivate surfaces with nitric acid.
- Low Oxygen: Stagnant water in crevices breeds corrosion. Design gaps >0.5mm.
Why Choose Our Stainless Steel Rods
- Certified Quality: ISO 9001 and FDA-compliant production, with third-party SGS/BV inspections.
- Customization: Tailor 304 stainless steel rod, threaded rods, or 3/16 rods to exact dimensions (e.g., medical-grade 316L).
- Fast Delivery: 15–30-day lead time via DHL/FedEx.
- Sustainability: 100% recyclable alloys reduce environmental impact.
- Technical Support: Expert guidance on welding parameters and corrosion prevention.
