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Home> Industry Information> ASTM A193 Grade B8M Stud Bolts

ASTM A193 Grade B8M Stud Bolts

April 29, 2024

ASTM A193 Grade B8M Stud Bolts

ASME is an ISO 9001 certified fastener manufacturer specializing in ASTM A193 Grade B8M Stud Bolts. Alongside various sizes and grades of ASTM A193 Grade B8 Stud Bolts, we boast one of North America's largest inventories of ASTM A194 Grade 8 & 8M stainless heavy hex nuts. Widely utilized in industrial pipe and valve assembly, ASTM A193 Grade B8M Stud Bolts are closely akin to grade 316 stainless steel. For inquiries, reach out to us at https://www.asmefastener.com/


Many of our customers may be familiar with ASTM A193/A193M, a specification encompassing both inch and metric series of carbon alloy steel and stainless steel bolting materials. This specification covers externally threaded bolts, screws, and studs, intended for use in pressure vessels, valves, flanges, and fittings subjected to high temperature service. Bars and wire are typically hot-wrought and may undergo further processing via centerless grinding or cold drawing.Austenitic stainless steel, part of the 300 series stainless, predominantly consists of austenite, a metallic, non-magnetic allotrope of iron. These alloys typically contain chromium, nickel (and sometimes nitrogen and molybdenum). Although they cannot be through-hardened, they can undergo carbide solution treatment or carbide solution treatment combined with strain-hardening (considered "class 2").

Heat treatment conditions for ferritic materials include:

  • Normalized and tempered
  • Quenched and tempered

Heat treatment conditions for austenitic stainless steels include:

  • Carbide solution treated (Class 1)
  • Carbide solution treated after finishing (Class 1A)
  • Carbide solution treated nitrogen-bearing stainless steels (Class 1B & 1C)
  • Carbide solution treated by rapid cooling from the rolling temperature (Class 1D)
  • Carbide solution treated and strain-hardened (Classes 2, 2B, and 2C)





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