ASTM A320 B8M Class 2 Stud Bolts fasteners are similar to Grade B8 but instead are manufactured from AISI 316 stainless steel as opposed to AISI 304 stainless steel. Although more expensive, type 316 stainless offers superior corrosion resistance compared to type 304 stainless. Grade B8M Class 1 fasteners require carbide solution treatment, while Class 2 fasteners require an additional strain hardening operation. A320 Grade B8M bolts also do not require an impact test.
Savoy Piping Inc. stocks ASTM A320 Stud Bolts from 3/8” - 4” diameter in Imperial Sizes: Plain (black) finish, Teflon Blue, and Cadium Plating. We also stocks B8 and B8M stud bolts. We can also provide larger stud bolts, stud bolts made from different materials (L7, L43, B8M, B8M, , Alloy 20, Monel, Hastelloy, Inconel, Titanium, etc), as well as different coatings. While many of the larger diameter items can be made available for a next-day delivery, some of the special alloys and coatings may be subject to a longer lead time.
GRADES | |
ASTM A320 L7 Alloy steel | AISI 4140/4142 Quenched and tempered |
ASTM A320 L43 Alloy steel | AISI 4340 Quenched and tempered |
ASTM A320 B8 Class 1 Stainless steel | AISI 304, carbide solution treated |
ASTM A320 B8M Class 1 Stainless steel | AISI 316, carbide solution treated |
ASTM A320 B8 Class 2 Stainless steel | AISI 304, carbide solution treated, strain hardened |
ASTM A320 B8M Class 2 Stainless steel | AISI 316, carbide solution treated, strain hardened |
See Also: ASTM A320 at ASTM.org
Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min | Charpy Impact 20-ft-lbf @ temp |
---|---|---|---|---|---|---|
B8M Class 1 | All | 75 | 30 | 30 | 50 | N/A |
B8M Class 2 | Up to 3/4 | 110 | 95 | 15 | 45 | N/A |
7/8 - 1 | 100 | 80 | 20 | 45 | N/A | |
1-1/8 - 1-1/4 | 95 | 65 | 25 | 45 | N/A | |
1-3/8 - 1-1/2 | 90 | 50 | 30 | 45 | N/A |
Element | B8M (AISI 316) |
---|---|
Carbon | 0.08% max |
Manganese | 2.00% max |
Phosphorus, max | 0.045% |
Sulfur, max | 0.030% |
Silicon | 1.00% max |
Chromium | 16.0 - 18.0% |
Nickel | 10.0 - 14.0% |
Molybdenum | 2.00 - 3.00% |
Bolt Grade | Nuts | Washers |
---|---|---|
B8M Class 1 | A194 Grade 8M | SS316 |
B8M Class 2 | A194 Grade 8M | SS316 |
ASTM A320 B8M Class 2 Stud Bolts Size Range | 3/8" to 4" Diameter (Imperial & Standard) . |
ASTM A320 B8M Class 2 Stud Bolts Types | All Thread, Double End, Single End |
ASTM A320 B8M Class 2 Stud Bolts Industry Standards | ANSI – American National Standards Institute: ANSI B 18.2.4 2M, ANSI B 28.2.4 1M DIN: DIN 934, DIN 970 UTS – Unified Thread Standard: UNC, UNF, UNEF, UNS, NPT, NPTF ISO – International Organization for Standardization: ISO 4032, ISO 4033 |
ASTM A320 B8M Class 2 Stud Bolts Specification | ASTM A320 / ASME SA320 |
ASTM A320 B8M Class 2 Stud Bolts Grades | Carbon Steel: B7, B7M, L7 Stainless Steel:B8, B8 CL2, B8M, B8M CL2, B16 Exotic Alloys: A20, 17-4PH, Monel, Inconel, Incoloy, Hastelloy |
ASTM A320 B8M Class 2 Stud Bolts Surface Coating | |
ASTM A320 B8M Class 2 Stud Bolts Packaging | Cartoon Box / Wooden Pallet / Wooden Box / Thread Protector |
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We are Suppliers of ASTM A320 B8M Class 2 Stud Bolts to Kanpur, Faridabad, Navi Mumbai, Caracas, Visakhapatnam, Moscow, Algiers, Jakarta, Haryana, Noida, Mumbai, Seoul, Surat, Coimbatore, Jamshedpur, Singapore, Kolkata, Pimpri-Chinchwad, Mexico City, Manama, Los Angeles, Istanbul, Ahmedabad, Bangkok, Madrid, Petaling Jaya, Muscat, Ludhiana, Riyadh, Ankara, Dallas, Chennai, New York, Port-of-Spain, Thane, Kuala Lumpur, Santiago, Colombo, Vadodara, Abu Dhabi, Baroda, Indore, London, Vung Tau, Granada, Nashik, Edmonton, Ernakulam, Hyderabad, Gurgaon, Kuwait City, New Delhi, Lahore, Bogota, Al Jubail, Sydney, Pune, Perth, Houston, Courbevoie, Rajkot, Ho Chi Minh City, Cairo, Toronto, Ahvaz, Howrah, La Victoria, Al Khobar, Gimhae-si, Sharjah, Thiruvananthapuram, Dubai, Tehran, Busan, Rio de Janeiro, Jaipur, Ulsan, Bengaluru, Dammam, Chandigarh, Geoje-si, Karachi, Jeddah, Secunderabad, Calgary, Brisbane, Nagpur, Lagos, Melbourne, Atyrau, Ranchi, Hong Kong, Bhopal, Hanoi, Milan, Chiyoda, Montreal, Doha, Aberdeen
For a Standard or Special Fastener, we are at your service! We specialize in Xylan Coated Stud Bolts, those made from Stainless Steel and Non-Ferrous Alloys. Look to Savoy Piping Inc. for fine Products and Reliable Information. Contact us today for All your Fasteners Need
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