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Production, Supply, Stock Range of ASTM A320 B8 Cl 2 AISI SS 304
Thread Diameters : Up to 2-1/2 (ASTM A320 Table 1 Class 2 properties apply up to 1-1/2 in)
Threads Configuration : ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads
Certification : Dual Certified As per ASTM & ASME Codes
Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service
The ASTM A320 specification covers alloy steel and stainless steel bolting materials for low temperature service. This standard covers rolled, forged, or strain hardened bars, bolts, screws, studs, and stud bolts used for pressure vessels, valves, flanges, and fittings. Thread dimensions, finish, marking and certification follow the common requirements of ASTM A962/A962M (ASTM A320 Section 4).
Grades
| ASTM A320 B8 Class 2 Stainless steel | AISI 304, carbide solution treated, strain hardened |
ASTM A320 Grade B8 Class 2 Chemical Properties
| Element | B8 (AISI 304) |
|---|---|
| Carbon | 0.08% max |
| Manganese | 2.00% max |
| Phosphorus, max | 0.05% |
| Sulfur, max | 0.03% |
| Silicon | 1.00% max |
| Chromium | 18.0 – 20.0% |
| Nickel | 8.0 – 11.0% |
| Molybdenum |
ASTM A320 Grade B8 Class 2 Mechanical Properties
| Grade | Size | Tensile, ksi min | Yield, ksi, min | Charpy Impact | Elong, % min | RA, %, min |
|---|---|---|---|---|---|---|
| B8 Class 2 | Up to 3/4 | 125 | 100 | N/A | 12 | 35 |
| 7/8 – 1 | 115 | 80 | N/A | 15 | 35 | |
| 11/8 – 11/4 | 105 | 65 | N/A | 20 | 35 | |
| 13/8 – 11/2 | 100 | 50 | N/A | 28 | 45 |
ASTM A320 B8 Cl 2 AISI SS 304 Bolts Manufacturer, SA320 Cl 2 AISI SS 304 Bolts Supplier in India- ASME, DIN, AS, BS
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