708-425-9080
Meyer Tool & Mfg.
  • Services
    • Engineering Services >
      • Pressure Vessel Design
      • Vacuum Chamber Design
      • Custom Cryogenic System Design
    • Machining Services >
      • CNC Milling
      • Lathe Turning
    • Welding Services >
      • ASME Code Welding
      • Aluminum Welding
      • Brazing and Soldering
      • Precision Welding Services
    • Assembly / Testing Services >
      • Helium Leak Testing
      • Pneumatic Pressure Testing
      • Hydrostatic Pressure Testing
      • Electrical Wiring / Sensor Testing
      • Cold Shock Testing
      • Precision Cleaning
      • Dye Penetrant Testing
  • Products
    • Vacuum Products >
      • Custom Vacuum Chamber >
        • Custom Aluminum Vacuum Chamber
        • Custom Stainless Steel Vacuum Chamber
        • Custom Exotic Material Vacuum Chamber
      • Custom Combination Pressure and Vacuum Chamber
    • Pressure Products >
      • Custom ASME Code Pressure Vessel
      • Non ASME Code Pressure Vessels
      • Custom ASME B31.3 Piping Systems
    • Cryogenic Products >
      • Custom Cryostats / Dewars >
        • Custom Aluminum Cryostats / Dewars
        • Custom Stainless Steel Cryostats / Dewars
      • Custom Cryogenic Distribution Boxes / Cold Boxes
      • Custom Heat Exchangers
      • Custom Cryogenic Thermal Shrouds and Shields
    • Machined Products >
      • Precision Mechanical / Electrical Assemblies
      • Custom Precision Machined Parts
      • Radio Frequency Components
    • MLI - Multi Layer Insulation
  • Markets Served
    • Customers / Industries >
      • Quantum Technology
      • Energy Industries
      • Aerospace Industry
      • Nuclear Industry
      • Coatings Industry
      • Semiconductor Industry
      • Astronomy Telescope Industry
      • Engineered Diamonds Industry
      • National Laboratories
      • Research Universities
      • Advanced Industrial Process Customers
      • CBD and Essential Oils
    • Customer Testimonials
  • Learning Center
    • Fabrication Tips
    • Subscribe to Our Newsletter
    • Newsletter Archive
    • Articles >
      • Custom Fabrication General Interest
      • Custom Cryogenic Technology
      • Custom Vacuum Chambers
      • Custom Pressure Vessels
  • About
    • Celebrating 55 Years
    • Why Us?
    • VIdeo Archive
    • Photo Gallery
    • Careers
  • Open Positions
  • Contact
    • Newsletter Signup
  • Services
    • Engineering Services >
      • Pressure Vessel Design
      • Vacuum Chamber Design
      • Custom Cryogenic System Design
    • Machining Services >
      • CNC Milling
      • Lathe Turning
    • Welding Services >
      • ASME Code Welding
      • Aluminum Welding
      • Brazing and Soldering
      • Precision Welding Services
    • Assembly / Testing Services >
      • Helium Leak Testing
      • Pneumatic Pressure Testing
      • Hydrostatic Pressure Testing
      • Electrical Wiring / Sensor Testing
      • Cold Shock Testing
      • Precision Cleaning
      • Dye Penetrant Testing
  • Products
    • Vacuum Products >
      • Custom Vacuum Chamber >
        • Custom Aluminum Vacuum Chamber
        • Custom Stainless Steel Vacuum Chamber
        • Custom Exotic Material Vacuum Chamber
      • Custom Combination Pressure and Vacuum Chamber
    • Pressure Products >
      • Custom ASME Code Pressure Vessel
      • Non ASME Code Pressure Vessels
      • Custom ASME B31.3 Piping Systems
    • Cryogenic Products >
      • Custom Cryostats / Dewars >
        • Custom Aluminum Cryostats / Dewars
        • Custom Stainless Steel Cryostats / Dewars
      • Custom Cryogenic Distribution Boxes / Cold Boxes
      • Custom Heat Exchangers
      • Custom Cryogenic Thermal Shrouds and Shields
    • Machined Products >
      • Precision Mechanical / Electrical Assemblies
      • Custom Precision Machined Parts
      • Radio Frequency Components
    • MLI - Multi Layer Insulation
  • Markets Served
    • Customers / Industries >
      • Quantum Technology
      • Energy Industries
      • Aerospace Industry
      • Nuclear Industry
      • Coatings Industry
      • Semiconductor Industry
      • Astronomy Telescope Industry
      • Engineered Diamonds Industry
      • National Laboratories
      • Research Universities
      • Advanced Industrial Process Customers
      • CBD and Essential Oils
    • Customer Testimonials
  • Learning Center
    • Fabrication Tips
    • Subscribe to Our Newsletter
    • Newsletter Archive
    • Articles >
      • Custom Fabrication General Interest
      • Custom Cryogenic Technology
      • Custom Vacuum Chambers
      • Custom Pressure Vessels
  • About
    • Celebrating 55 Years
    • Why Us?
    • VIdeo Archive
    • Photo Gallery
    • Careers
  • Open Positions
  • Contact
    • Newsletter Signup

Call: 708-425-9080

Picture
more articles
Picture

​Welding Basics: The Fillet Weld

Fillet welds and groove welds are the two most common types of weld configurations that Meyer Tool sees on our customers’ prints and that we use in our own designs. The fillet weld is used either by itself or in conjunction with a groove weld.
​
The strength of a fillet weld is determined by its effective area, which is the product of its throat thickness and length (See Figure 1). The ASME Section VIII B&PV Code Division specifies the required throat of a fillet weld in standard weld sketches or formulas in Section UW. However, in standard drawing practice per ANSI/AWS A2.4, it is the leg of the fillet weld that is specified, not its throat (See Figure 2).
Picture
Figure 1 Fillet Weld, Throat and Length
Picture
Figure 2 Fillet Weld Callout
Picture
Figure 3 Throat and Leg Relationship
When determining the leg size to specify based on the required throat thickness, the fillet weld is considered to be an isosceles triangle. The throat thickness bisects the isosceles triangle, splitting the single triangle into two right triangles with the throat thickness on one side and the weld leg of the fillet weld being the hypotenuse. Thus the weld leg of the fillet weld is found to be L = T/COS(45) or as commonly approximated L= T/(0.7). (See Figure 3).

Company Information

About Meyer Tool
Careers
Newsletter

Proud Member

Picture

Contact Us

Phone: 708-425-9080
Fax: 708-425-2612
Email: [email protected]
​​
Address: 4601 W. Southwest Highway, Oak Lawn, IL, 60453
​
​Request a Quote

​Building The Impossible Since 1969

Links

Home
Services
Products
Experience
Education
​Contact
Why Meyer Tool?

Stay Connected

© COPYRIGHT 2025. ALL RIGHTS RESERVED.