• CAT MINH TECHNOLOGY EQUIPMENT CO., LTD
    ASTM A193 B7 Stud Bolt
    ASTM A193 B7 Stud Bolt

    Price: Contact

      Mã số nhà sản xuất: CM-ASTM-A193-B7 Mã số đặt hàng:
    • Manufacturer : Korea, Singapore, Australia, America, China
    • Guarantee : 24 Month
    • Đóng gói :
    • Status: Hàng có sẵn

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      Email: info@catminh.com

    ASTM A193 193M is the standard that covers alloy and stainless steel bolting material for pressure vessels, valves, flanges, and fittings for high-temperature service.   The term bolting material as used in this specification covers bars, bolts, screws, studs, stud bolts, and wire. Bars and wire shall be hot-wrought. The material may be further processed by centerless grinding or by cold drawing. Austenitic stainless steel may be carbide solution treated or carbide solution treated and strain-hardened.  One of the most common alloy and stainless industrial fasteners is the Grade B7 studs and Grade B8 stud respectively.

    Several grades are covered, including ferritic steels and austenitic stainless steels designated B5, B8, and so forth. Selection will depend upon design, service conditions, mechanical properties, and high-temperature characteristics.


     

    ASTM A193 TENSILE STRENGTH / HARDNESS CHART

      Grade and Class Diameter Tensile Strength Min KSI Yield Strength 0.2% Offset KSI Elongation in 4D, Min, % Reduction of Area Min, % Hardness Max Brinell Hardness Max Rockwell
      B5 up to 4" incl 100 80 16 50 - -
      B6  up to 4" incl 110 85 15 50 - -
      B6X  up to 4" incl 90 70 16 50 - C26
      B7    to 2-1/2"  125 105 16 50 - C35
    over 2-1/2 to 4" 115 95 16 50 - C35
    over 4" to 7" 100 75 18 50 - C35
      B7M   up to 4" incl 100 80 18 50 235 B99
    over 4" to 7" 100 75 18 50 235 B99
      B16   to 2-1/2" 125 105 18 50 321 C35
    over 2-1/2" to 4" 100 95 17 45 321 C35
    over 4" to 7" 100 85 16 45 321 C35
      Classes 1 and 1D: B8, B8M, B8P, B8LN, B8ML All 75 30 30 50 223 B96
      Class 1: B8C, B8T All 75 30 30 50 223 B99
      Class 1A: B8A, B8CA, B8MA, B8PA, B8TA, B8LNA, B8MLNA, B8NA, B8MNA, B8MLCuNA All 75 30 30 50 192 B90
      Classes 1B & 1D: B8N, B8MN, B8MLCuN All 80 35 30 40 233 B96
      Class 1C and 1D: B8R All 100 55 35 55 271 C28
      Class 1C: B8RA All 100 55 35 55 271 C28
      Classes 1C and 1D: B8S All 95 50 35 55 271 C28
      Classes 1C: B8SA All 95 50 35 55 271 C28
      Class 2: B8, B8C, B8P, B8T, B8N     to 3/4" 125 100 12 35 321 C35
    over 3/4" to 1" 115 80 15 45 321 C35
    over 1" to  1-1/4" 105 65 20 45 321 C35
    over 1-1/4 to 1-1/2" incl  100 50 28 45 321 C35
      Class 2 B8M, B8MN, B8MLCuN    to 3/4" 110 96 15 45 321 C35
    over 3/4" to 1" 100 80 20 45 321 C35
    over 1" to  1-1/4" 95

    65

    25 45 321 C35
    over 1-1/4 to 1-1/2" incl  90 50 30 45 321 C35
      Class 2B: B8, B8M2    to 2" incl 95 75 20 40 321 C35
    over 2" to  2-1/2" incl  90 65 30 40 321 C35
    over 2-1/2 " to 3" incl  80 55 30 40 321 C35
     Class 2C: B8M3  to 2" incl 85 65 30 60 321 C35
    over 2" 80 60 60 60 321 C35

     

     

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