An engineered high temperature resistant steelSocket Head Cap Screw

Alloy 330 socket head cap screws are specifically designed for high temperature furnace applications such as vacuum furnaces, heat treating and brazing applications. The most prized trait of alloy 330 is its ability perform under cyclic conditions of temperature extremes from heating and cooling; as well as in alternate carburizing and oxidizing atmospheres. An austenitic nickel-chromium-iron-silicon alloy, 330 socket head cap screws also offer industry a low coefficient of expansion, excellent ductility, and high strength.

Benefits & Corrosion Resistance

  • Resistance to thermal shock from repeated quenching
  • High level of resistance to oxidation and carburization
  • Ability to handle thermal cycling
  • Provides resistance to scale formation up to about 2000°F
  • Good resistance to nitrogen-containing atmospheres where the oxygen content is low
  • High nickel content of 34-37% provides high resistance to chloride stress corrosion cracking and embrittlement

Applications for Alloy 330 Socket Head Cap Screws

  • Alloy 330 socket head cap screws are often used in furnaces, thermal processing and heat treating applications.
  • Gas turbine components and boiler fixtures used in power generation often use Alloy 330 socket head screws.
  • Because of its resistance to nitrogen rich environments, alloy 330 screws are used extensively for components handling cracked ammonia.
Alloy 330 Properties
Tensile Strength (ksi)  80-85
Yield Strength (ksi) 30-43
Elongation in 2” 40-45
Rockwell B Hardness 70-85
Density (lb/in3) 0.292
Specific Heat (Btu/lb/°F (32°-212°F)   0.11
Modulus of Elasticity Tension 28.5

 

Resources: Alloy 330 Torque Specs

Alloy 330 Screw Types 12 Point Screws, Button Head Cap ScrewsFlat Head ScrewsHex Head Cap ScrewsPan Head ScrewsSet ScrewsSocket Head Cap ScrewsTamper Resistant Security Screws, Torx Screws, Vented Screws


Alloy 330 Socket Head Cap Screw Features and Benefits

When it comes to Alloy 330 socket head cap screws, it’s all about clearance. These screws are the best choice for applications with limited installation access or clearance. Yet if you have an application with a lot of debris, you may want to select a Alloy 330 hex head bolt or hex head cap screw, as they don’t have a socket drive which could get clogged.

Advantages:

  • Ideal for applications with limited access as they require very little clearance around the fastener.
  • Socket head cap screws can be used in locations where externally wrenched fasteners aren't desirable.
  • Weight reduction on application as Alloy 330 socket head cap screws are smaller – being that the cylindrical heads of socket screws need less space than hex heads and require no additional wrench space.
  • Also known for safety, reliability and economy.

 


330 Tensile Curve


Alloy 330 Chemistry and Specifications

Alloy 330 (UNS N08330) is best known for its extreme high temperature strength and stability. One of the most unique attributes of Alloy 330 is its ability to handle cyclic temperature changes from extreme high temperatures to cooling phases, as well as in oxidation-rich environements.

Alloy 330 Specifications: UNS N08330, AMS 5592, AMS 5716, ASME SB 511, ASME SB 536,  ASTM B 511, ASTM B 512, ASTM B 535, ASTM B 536, ASTM B 546, ASTM B 710, ASTM B 739, EN 10095, Werkstoff 1.4886

Alloy 330 chemical composition

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