Ni-Cr-Mo 4340 Bolts and Nuts

Ni-Cr-Mo AISI 4340

Buy Ni-Cr-Mo 4340 bolts, nuts and other fasteners from Boltport, an Indian manufacturer & supplier of Ni-Cr-Mo 4340 bolting materials to ASTM B446, B564, F467, F468, UNS N064340, DIN EN 2.4856, AMS 5666 and BS 3076 specifications with properties adequate for high strength, corrosion resistant and high temperature applications up to 1000º C (1800º F).

Boltport fasteners offer Ni-Cr-Mo 4340 bolts and nuts with standard and custom manufacturing to your specification. We covers Ni-Cr-Mo 4340 hex bolts, studs, stud bolts, hex nuts, washers, threaded rod and other fastener in metric and inch sizes with coarse, fine and extra fine threads to ASME, UN, BS, ISO and DIN standards.

Ni-Cr-Mo 4340 Bolting Material

AISI 4340 Specifications

  • ASTM B446 / ASME SB446
  • ASTM B443 / ASME SB443
  • ASTM B564 / ASME SB564
  • ASTM F467 / F467M
  • ASTM F468 / F468M
  • AMS 5666
  • BS 3076
  • AISI 4340
  • UNS N064340
  • DIN / EN / Werkstoff No. 2.4856

AISI 4340 Properties

Chemical Composition
Elements Ni Cr Mo Fe Nb + Tc Co Mn Si Al Ti C P S
Min % - 20.0 8.0 - 3.15 8.0 - - - - - - -
Max % Bal 23.0 10.0 5.0 4.15 1.0 0.5 0.5 0.4 0.40 0.10 0.015 0.015
Mechanical Properties
Temperature (°F) Ultimate Tensile (ksi) Yield Strength at 0.2% Offset(ksi) Elongation %
Room Temp. 144.0 84.0 44.0
400 134.0 66.0 45.0
4340 132.0 63.0 42.5
800 132.0 61.0 45.0
1000 130.0 61.0 48.0
1200 119.0 60.0 34.0
1400 78.0 59.0 59.0
14340 40.0 39.0 117.0
  • AISI 4340 for Aerospace Industry
  • AISI 4340 for Chemical Processing Industry
  • AISI 4340 for Food and Beverage Processing Industry
  • AISI 4340 for Marine and Offshore Industry
  • AISI 4340 for Oil and Gas Industry
  • AISI 4340 for Paper and Pulp Processing Industry
  • AISI 4340 for Power Generation Industry
  • AISI 4340 for Research and Development Projects
  • AISI 4340 for Water Desalination Plants

AISI 4340 Characteristics

  • Excellent resistance to chloride pitting and crevice corrosion cracking
  • Immune to Chloride ion stress corrosion
  • Maintains high strength at elevated temperatures
  • Resistant to sea water, in both flowing and stagnant condition
  • Heat resistant

AISI 4340 Applications

  • Marine engineering
  • Furnaces & gas turbines
  • Chemical processing plants
  • Boiler & pressure vessels
  • Nuclear power plants