At Namo Alloy, we are leading suppliers of high-integrity Stainless Steel 304 and 316 Flanges and Fasteners. Flanges are the critical connection points in piping systems, and our forged range—including Weld Necks, Slip-ons, and Blind flanges—ensures a leak-proof seal under high pressure. Complementing these are our precision-threaded Fasteners, including heavy hex bolts, studs, and nuts, engineered for maximum grip and vibration resistance. While Grade 304 is perfect for general food processing and architectural use, our Grade 316 components offer the molybdenum-enhanced protection necessary for marine environments and chemical plants. Every flange and fastener is 100% mill-certified to ASME B16.5 and ASTM A193/A194 standards, guaranteeing dimensional accuracy and exceptional corrosion resistance.
| Grade | C (Carbon) | Mn (Manganese) | P (Phosphorus) | S (Sulfur) | Si (Silicon) | Cr (Chromium) | Ni (Nickel) | Mo (Molybdenum) |
|---|---|---|---|---|---|---|---|---|
| SS 304 | 0.08% Max | 2.0% Max | 0.045% Max | 0.03% Max | 0.75% Max | 18.0 - 20.0% | 8.0 - 10.5% | - |
| SS 316 | 0.08% Max | 2.0% Max | 0.045% Max | 0.03% Max | 0.75% Max | 16.0 - 18.0% | 10.0 - 14.0% | 2.0 - 3.0% |
| SS 316L | 0.03% Max | 2.0% Max | 0.045% Max | 0.03% Max | 0.75% Max | 16.0 - 18.0% | 10.0 - 14.0% | 2.0 - 3.0% |
| Grade | Tensile Strength (MPa) min. | Yield Strength 0.2% Offset (MPa) min. | Elongation (%) min. | Reduction of Area (%) min. | Hardness (Brinell) Max. | Hardness (Rockwell B) Max. |
|---|---|---|---|---|---|---|
| SS 304 | 515 MPa | 205 MPa | 40% | 50% | 201 HB | 92 HRB |
| SS 316 | 515 MPa | 205 MPa | 40% | 50% | 217 HB | 95 HRB |
| SS 316L | 485 MPa | 170 MPa | 40% | 50% | 217 HB | 95 HRB |
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ASME B16.5, B16.47 Series A & B, MSS SP-44, DIN, EN1092-1 |
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Flange Types
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Weld Neck, Slip-On, Blind, Socket Weld, Lap Joint, Threaded, Spectacle Blind |
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Pressure Rating
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Class 150, 300, 600, 900, 1500, 2500 | PN6, PN10, PN16, PN25, PN40, PN64 |
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Size Range
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1/2" (15 NB) to 48" (1200 NB) |
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Face Types
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Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Male-Female (M&F) |
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ASTM A193 / A194 (High-Temp), ASTM A320 (Low-Temp), DIN 931/933/934 |
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Product Range
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Hex Bolts, Heavy Hex Bolts, Stud Bolts (Full Thread/Ends), Eye Bolts, U-Bolts, Nuts & Washers |
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Dimensions
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Diameter: M3 to M100 | 1/8" to 4" Length: Up to 5 Meters for Tie-Rods |
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UNC, UNF, BSW, Metric Coarse & Fine (Right-hand/Left-hand) |
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Hardness Test, Proof Load Test, Wedge Tensile Test, Charpy V-Notch Impact Test |
Traceability: All Flanges are die-stamped with Size, Rating, Material Grade, and Heat Number. Fasteners are marked with Grade Identifiers (B8/B8M) for 100% material traceability and compliance with global safety codes.
Namo Alloy is a leading stockist and global exporter of premium Stainless Steel, Carbon Steel, and High Nickel Alloys.
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