Grade UNS S32760, or as commonly referred to as grade F55 is a stainless steel alloy that belongs to the duplex class. The mechanical properties of astm a182 F55 bolts have a high value amongst its users across several industries. Because the material has exceptional properties, the alloy for ASTM A182 Grade F55 Fasteners is referred to as super duplex stainless steel. The PREN value of super duplex stainless steel alloys tends to rate much higher than standard duplex alloys.
Therefore, Super Duplex Steel Gr F55 Heavy Hex Nuts can be used in applications that need to respond to issues such as pitting or crevice corrosion. Yet, the most interesting characteristic of the alloy is that the Super Duplex Gr F55 Round Head Bolts can resist a problematic issue such as stress corrosion cracking or SCC in halide containing environments. Halogens like chlorine are detrimental to the longevity and health of metals over a period of time. The inclusions of tungsten and copper included in the alloy of Super Duplex Steel Gr F55 Stud bolts makes it resistant to applications in aggressive chloride-containing environments. Fatigue is another issue that affects conventional stainless steel grades.
The use of Super Duplex F55 Threaded Rod is ideal for those applications that are most likely to cause problems such as fatigue or erosion corrosion. In comparison to grade 316, the Super Duplex Gr F55 Screws is about 10% lighter, which means they could be used in applications where lighter weight metals are desired. With high mechanical strength, the astm a182 gr f55 bolts is a cost effective solution to nickel alloys.
| Standard | IS, ANSI, ASTM DIN, ISO, JIS, GB, ASME, BS, UNI and all International Standards |
|---|---|
| Threads: | BSF, UNF METRIC, UNC, BSW or as required |
| Standard | ANSI – American National Standards Institute
DIN:DIN 933, DIN 931, DIN 970, DIN 934 UTS – Unified Thread Standard : UNF, NPT, NPTF, UNS, UNC, UNEF ISO – International Organization for Standardization ISO 4033, : ISO 4032, JIS standards |
| Fasteners/ Bolts Size | M10, M4, M16, M36 M2.5, M6, M30, M12, M8, M14, M2, M3, M20, M24, M5 to M160 |
| Length | 3 mm to 200 mm |
| Head drive: | Phillips, Slotted, Phillips/Slot, Six-Lobe etc |
| Test Certificate | as per EN 10204 / 3.1 Manufacturer Test Certificate |
| Finishing | Zinc white, (yellow, black, blue), black oxide,
Dacroment, Geometry, plated zinc-nickel, anodizing, nickel plated, Stainless steel: Passivated Self-Colour, Bright Zinc Plated (BZP), Hot Dip Galvanised (HDG), Sherardized, Stainless Steel, some special one like DACROMET and Mechanically Applied coating |
| raw materials of Source | JSPL, Usha Martin, Tata Steel, Mukund Steel, RINL, Dhamm Steel etc. |
| Form | Square, Hex, Threading as per Gauge, Round Etc. |
| Process of Production | M2-M24: Cold Froging, hot forging M24-M100, machining and CNC for Customized connecting element |
| Surface Coating |
|
| Packing | IN BULK: pallet, canton, carton / Small Boxs / pallet or customer request |
| For Bolts & Screws | A2-70, A2-80, A4-70, A4-80, F593C, F593D, F593G, F593H |
| For Nuts | A2-70, A2-80, A4-70, A4-80, F594C, F594D, F594G, F594H, A2-035, A4-040 |
| For SHCS | F837B, F837C, F837E, F837 |
| For Threaded Rods | A2-70, A2-80, A4-70, A4-80, F593C, F593D, F593G, F593H, B8, B8M CL1 & CL2 |
| Element | Content (%) |
|---|---|
| Chromium, Cr | 24 – 26 |
| Nickel, Ni | 4.5 – 6.5 |
| Phosphorous, P | 0.035 Max |
| Carbon, C | 0.03 max |
| Sulfur, S | 0.015 Max |
| Molybdenum, Mo | 3 – 4 |
| Manganese, Mn | 1.2 Max |
| Silicon, Si | 0.8 Max |
| Copper, Cu | Balance |
| Nitrogen, N | 0.25 |
| Iron, Fe | Balance |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) | Hardness Rockwell C (HR C) |
|---|---|---|---|---|
| Alloy GR F55 | 110 | 80 | 15 | 28 max |
| STANDARD | UNS | WERKSTOFF NR. |
| ASTM A182 GR.F55 | – | 1.4501 |
| Hexagon Bolts / Set Screws | Stud Bolts | Hexagon Nuts | Socket Cap screws |
|---|---|---|---|
| DIN 931 | BS4882 | DIN 934 | DIN 912 |
| DIN 933 | DIN 976 | BS 1768 | DIN 6912 |
| BS 1768 | BS 1769 | DIN 7984 | |
| UNI 5731 | BS 1083 | ANSI B18.3 | |
| UNI 5739 | BS 3692 | ISO 4762 | |
| ISO 4014 | ISO 4032 | UNI 5931 | |
| ISO 4017 | ISO 4033 | BS 2470 | |
| BS 1769 | ANSI B18.2.2 | BS 4168 | |
| BS 3692 | |||
| ANSI B18.2.1 |
