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Material Specification

AISI 317L

AISI 317L Fasteners
Low-Carbon High-Molybdenum Stainless Steel

Austenitic Stainless Steel AISI 317L Fasteners

Buy AISI 317L bolts and studs from Exotic Alloy, specified for flue gas desulfurization (FGD) scrubbers and chemical reactors.

Exotic Alloy fasteners offer AISI 317L bolts, nuts, and studs with standard and custom manufacturing to your exact project specifications. We cover AISI 317L hex bolts, heavy hex bolts, studs, stud bolts, hex nuts, washers, threaded rod, and custom drawing fasteners in metric (M3 to M120) and inch sizes (1/4" to 5") with coarse, fine, and extra-fine threads to ASME, ISO, and DIN standards.

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AISI 317L Bolting Products

AISI 317L Specifications & Standards

  • ASTM A193 / A194
  • ASTM A276 / A479
  • UNS S31703
  • ASTM F593 / F594
  • DIN EN ISO 10088-3 (1.4438 / X2CrNiMo18-15-4)
  • ISO 3506-1 / 3506-2
  • BS 970 / BS EN 10088
  • JIS G4303
AISI 317L Material Datasheet

AISI 317L Properties

Chemical Composition (AISI 317L)
Elements C Mn P S Si Cr Ni Mo Fe
Min % - - - - - 18.00 11.00 3.00 Balance
Max % 0.030 2.00 0.045 0.030 1.00 20.00 15.00 4.00 Balance
Mechanical Properties (AISI 317L)
Condition / Heat Treatment Tensile Strength (MPa) Yield Strength (MPa) Elongation (%) Hardness
Annealed (Soft) 550 - 650 220 - 290 40 - 55 % 150 - 180 HB / 80 - 88 HRB
Cold Drawn (Class 70) 700 450 25 % 190 - 220 HB / 90 - 95 HRB
Cold Drawn (Class 80) 800 600 15 - 20 % 240 - 280 HB / 22 - 29 HRC

AISI 317L Characteristics

  • Proven metallurgical corrosion resistance across chemical, atmospheric, and marine media
  • Superior ductility and high toughness from cryogenic depths (-196°C) to elevated temperatures
  • Standard austenitic Face-Centered Cubic (FCC) lattice ensuring non-magnetic characteristics
  • Excellent weldability and compatibility with standard industrial TIG/MIG welding techniques
  • Comprehensive compliance with global ASTM, ASME, DIN, ISO, and BS bolting specifications

AISI 317L Applications

  • High-integrity industrial bolting (hex bolts, heavy hex nuts, stud bolts, tie rods)
  • Chemical and petrochemical process piping, pressure vessels, and heat exchanger flanges
  • Food, beverage, brewery, and dairy processing sanitary machinery and conveyor systems
  • Architectural structural facades, marine railings, coastal cladding, and glass wall spider bolts
  • Cryogenic storage tanks, LNG transport valves, and pharmaceutical cleanroom equipment