ASTM A193/A193M

ASTM A193/A193M is a specification from the ASTM International that primarily govern industrial piping applications. In the assembly of an industrial plant, many complex components are bolted together of which include parts such as valves, piping, and pressure vessels. ASTM A193 defines the methodology to procure and certify externally threaded fasteners according to specific chemical and mechanical criteria. It is standards such as this that allow industrial process applications to be safely engineered so they do not exceed the tensile strength of the fasteners that hold them together.[1]

Material grades that are governed under ASTM A193 include:

Ferritic steels

Grade: UNS designation

  • B5 5% Chromium
  • B6 12% Chromium
  • B6X S 41000
  • B7 Chromium-molybdenum steel
  • B7M Chromium-molybdenum
  • B16 Chromium-molybdenum-vanadium steel
  • Austenitic steels

Grade: UNS designation

  • B8 S 30400 (304)
  • B8A S 30400 (304)
  • B8C S 34700 (347)
  • B8CA S 34700 (347)
  • B8M S 31600 (316)
  • B8MA S 31600 (316)
  • B8M2 S 31600 (316)
  • B83 S 31600 (316)
  • B8P S 30500
  • B8PA S 30500
  • B8N S 30451 (304N)
  • B8NA S 30451 (304N)
  • B8MN S 31651 (316N)
  • B8MNA S 31651 (316N)
  • B8MLCuN S 31254
  • B8MLCuNA S 31254
  • B8T S 32100 (321)
  • B8TA S 32100 (321)
  • B8R S 20910
  • B8RA S 20910
  • B8S S 21800
  • B8SA S 21800
  • B8LN S 30453
  • B8LNA S30453
  • B8MLN S 31653
  • B8MLNA S 31653

"North America’s industrial ASTM A193/A193M fastener"

==Equivalent Grade Of A193 B6==

[2]

AISI UNS ASTM
410 41000 ASTM A193 GRADE B6

References
  1. "ASTM A193 / A193M - 16 Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications". www.astm.org. Retrieved 15 February 2017.
  2. "ASTM A193 Grade B6". Retrieved November 11, 2020.
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