Kanakratna Steelage Private Limited
Mumbai, Maharashtra
GST No. 27AAECK9442R1ZP
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Stainless Steel Tube
Astm A276 S32750
Minimum Order Quantity: 100 Kg
Product Brochure
| Steel Grade | ASTM A240 |
| Size/Diameter | 3 inches |
| Material | ASTM A240 |
| Thickness | 2 - 100MM |
| Surface Treatment | Hot Rolled Pickled, Bright, Sand Blasting Finished, Cold Drawn, Hairline,Polished |
| Type | Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc. |
| Grade | ASTM A276 S32750 |
| Length | 100 to 6000mm Length |
| Finish | Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
Modern industries such as oil & gas, marine engineering, desalination, and chemical processing demand materials that can withstand corrosive chloride environments while maintaining high strength. Traditional stainless steels like 304 and 316L often fail in such conditions due to pitting, crevice corrosion, and stress corrosion cracking.
To overcome these challenges, engineers increasingly rely on Super Duplex Stainless Steel S32750 (commonly known as 2507). The ASTM A276 specification covers bars and shapes of stainless steel, including the super duplex S32750 grade, ensuring consistency in chemical composition, heat treatment, mechanical properties, and dimensional tolerances.
Chemical Composition of UNS S32750
| Element | Percentage (%) |
|---|---|
| Chromium (Cr) | 24.0 – 26.0 |
| Nickel (Ni) | 6.0 – 8.0 |
| Molybdenum (Mo) | 3.0 – 5.0 |
| Nitrogen (N) | 0.24 – 0.32 |
| Manganese (Mn) | ≤ 1.2 |
| Silicon (Si) | ≤ 0.8 |
| Carbon (C) | ≤ 0.03 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.020 |
| Iron (Fe) | Balance |
| Property | Value |
|---|---|
| Density | 7.8 g/cm³ |
| Melting Range | 1350 – 1400 °C |
| Thermal Conductivity | 14.2 W/m·K at 20 °C |
| Electrical Resistivity | 85 μΩ·cm |
| Modulus of Elasticity | 200 GPa |
| Specific Heat | 500 J/kg·K |
| Magnetic Properties | Slightly magnetic (due to ferrite content) |
| Property | Value |
|---|---|
| Tensile Strength | ≥ 800 MPa |
| Yield Strength (0.2% offset) | ≥ 550 MPa |
| Elongation | ≥ 15% |
| Hardness | ≤ 310 HB |
| Impact Toughness | > 27 J at -50 °C |
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Solution Annealing: 1020 – 1100 °C, followed by rapid quenching.
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Stress Relieving: Not recommended (may reduce corrosion resistance).
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Hardening: Cannot be hardened by heat treatment, only cold work.
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Mechanical Testing: Tensile, yield, hardness, impact.
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Corrosion Testing: ASTM G48 pitting test, ferrite balance.
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NDT: Ultrasonic, radiography, dye penetrant.
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Microstructure Analysis: Confirms 40–60% ferrite.
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Dimensional Inspection: Ensures ASTM/ASME tolerances.
Additional Information:
- Production Capacity: IN TONS
- Delivery Time: READY STOCK
- Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes
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