•   0091-22-66157017
  •   info@torqbolt.com
    • Home
    2. ASTM A320/A320M Grade B8T

    ASTM A320/A320M Grade B8T Titanium Stabilized Stainless Steel Bolting

    Class 1 Low Temperature Fasteners - AISI 321 Austenitic Stainless Steel

    ASTM A320/A320M Grade B8T is the standard Class 1 titanium stabilized austenitic stainless steel bolting grade designed for low temperature and high temperature corrosive service. Manufactured from AISI 321 with 17-19% chromium and 9-12% nickel, B8T offers excellent resistance to intergranular corrosion and oxidation up to 1500°F. With 75 ksi minimum tensile strength and 30% elongation, ASTM A320/A320M Grade B8T provides outstanding toughness at cryogenic temperatures while maintaining structural integrity in cyclic thermal applications.

    ASTM A320/A320M Grade B8T Stud Bolts Properties

    ASTM A320/A320M Grade B8T Stud Bolts Chemical Requirements

    Austenitic Steels

    Grade Symbol UNS Designation C, max Mn, max P, max S, max Si, max Ni Cr Ti N
    ASTM A320 B8T S32100(321) Range,% 0.08 2.00 0.045 0.030, max 1.00 9.0- 12.0 17.0- 19.0 5 × (C+N) min -0.7 max 010, max
    Product Variation, % Over or Under 0.01 over 0.04 over 0.010 over 0.005 over 0.05 over 0.15 0.20 0.05 under 1

    ASTM A320/A320M Grade B8T Stud Bolts Mechanical Requirements

    Austenitic Steels

    Grade and Class Diameter, in. [mm] Heat Treatment Tensile Strength, min, ksi [MPa] Yield Strength, min, ksi [MPa] (0.2 % offset) Elongation in 2 in. or 50 mm, min, % Reduction of Area, min, % Hardness, max
    ASTM A320 B8T Class 1 All diameters carbide solution treated 75 [515] 30 [205] 30 50 223 HBWDor  96 HRB
    ASTM A320 B8T Class 2 3/4 [20] and under carbide solution treated and strain  hardened 125 [860] 100 [690] 12 35 321 HBW or 35  HRC
    over 3/4 to 1 [20 to 25], incl 115 [795] 80 [550] 15 30 321 HBW or 35  HRC
    over 1 to 11/4 [25 to 32], incl 105 [725] 65 [450] 20 35 321 HBW or 35  HRC
    over 11/4 to 11/2 [32 to 40], inclA 100 [690] 50 [345] 28 45 321 HBW or 35  HRC

    Related Keywords

  • ASTM A320/A320M Grade B8T Class 1 Stud Bolts
  • A320 B8T Class 1 Cap Screws
  • A320 Gr B8T Cl 1 Studs
  • A320 B8T Class 1 Hex Cap Screws
  • Grade B8T Class 1 Threaded Rods
  • Asme Sa 320 Grade B8T Class 1 Hex Cap Screws
  • Sa320 B8T Class 1 Studs
  • A320 B8T Class 1 Heavy Hex Screws
  • Sa320 B8T Class 1 Cap Screws
  • Astm A320 B8T Class 1 Stud Bolt
  • Astm A320 B8T Class 1 Stud Bolts
  • Sa320 Gr B8T Cl 1 Stud Bolt
  • Astm A320 B8T Class 1 Bolts
  • Sa320 Gr B8T Cl 1 Threaded Rods
  • Asme Sa 320 Gr B8T Class 1 Bolting
  • A320 Gr B8T Cl 1 Hex Bolts
  • Astm A320 Gr B8T Class 1 Stud Bolt
  • Sa320 B8T Class 1 Heavy Hex Screws
  • Grade B8T Class 1 Cap Screws
  • A320 Gr B8T Cl 1 Socket Head Cap Screws
  • Astm A320 Gr B8T Class 1 Cap Screws
  • Asme Sa 320 B8T Class 1 Hex Bolts
  • ASTM A320/A320M Grade B8T Class 1 Bolting
  • Sa320 Gr B8T Cl 1 Screws
  • A320 Gr B8T Cl 1 Bolts
  • ASTM A320/A320M Grade B8T Class 1 Cap Screws
  • A320 Gr B8T Cl 1 Screws
  • A320 B8T Class 1 Socket Head Cap Screws
  • ASME SA 320 B8T Class 2 Bolting
  • A320 B8T Class 2 Bolts
  • ASTM A320 Gr B8T Class 2 Socket Head Cap Screws
  • ASTM A320 B8T Class 2 Hex Cap Screws
  • A320 Gr B8T Class 2 Square Bolts
  • ASME SA 320 Gr B8T Class 2 Screws
  • ASME SA 320 Grade B8T Class 2 Stud Bolt
  • ASME SA 320 Gr B8T Class 2 Threaded Rods
  • SA 320 Gr B8T Class 2 Cap Screws
  • A320 B8T Class 2 Studs
  • SA 320 Gr B8T Class 2 Stud Bolt
  • SA 320 Gr B8T Cl 2 Threaded Rods
  • ASME SA 320 Grade B8T Class 2 Socket Head Cap Screws
  • ASTM A320 Gr B8T Cl 2 Square Bolts
  • ASTM A320/A320M Grade B8T Class 2 Studs
  • ASME SA 320 Gr B8T Cl 2 Square Bolts
  • Grade B8T Class 2 Hex Cap Screws
  • SA 320 Gr B8T Class 2 Screws
  • A320 Gr B8T Cl 2 Hex Bolts
  • ASTM A320 B8T Class 2 Screws
  • ASTM A320/A320M Grade B8T Class 2 Heavy Hex Screws
  • ASTM A320/A320M Grade B8T Class 2 Square Bolts
  • SA 320 Gr B8T Class 2 Threaded Rods
  • ASME SA 320 Grade B8T Class 2 Stud Bolts
  • A320 Gr B8T Class 2 Studs
  • ASME SA 320 Grade B8T Class 2 Hex Bolts
  • ASTM A320 Gr B8T Cl 2 Socket Head Cap Screws
  • ASME SA 320 Gr B8T Cl 2 Hex Bolts
    • Related Specifications
    Surface Treatments
    Certifications
    About Us
    Questions? Contact us.
    Showcase of our Microsites.
    Satisfaction Survey

    survey

    TUVRheinland CRETIFIED

    © TorqBolt P(Ltd) · Built with in INDIA.