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Shear Stud

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Shear Stud
Shear Stud
Shear Stud
Shear Stud

Shear Stud

Shear Connectors / Shear Studs for Composite Steel Construction

Shear connectors, also known as shear studs or concrete anchors, are fundamental components in composite steel-concrete construction. Their primary function is to securely tie a concrete slab to underlying steel members (such as beams or girders), creating a unified composite structure that efficiently resists shear forces and ensures full composite action. This synergy significantly enhances the load-bearing capacity, stiffness, and overall structural integrity of applications like commercial buildings, industrial facilities, and bridges.

A key feature of these studs is the compatibility with Welding Through Metal Deck. For this specific application, we recommend using special Type UFT ceramic ferrules to ensure consistent, high-quality welds through the deck profile.

Product Details

Manufactured to Global Standards

Our shear connectors are engineered to meet the most stringent international standards and hold relevant European certifications (ETA & CE), guaranteeing their reliability and performance. They are designed to comply with:

ISO 13918: Welding - Studs and ceramic ferrules for arc stud welding

AWS D1.1: Structural Welding Code - Steel

AWS D1.5: Bridge Welding Code

AWS D1.6: Structural Welding Code - Stainless Steel

GB/T 10433: Cheese Head Studs For Arc Stud Welding

JIS B 1198: Headed Studs

The manufacturing quality assurance meets the rigorous Grade 1 (QA1) standards required for critical applications such as nuclear power stations.


Engineered for Superior Performance & Weldability

High-Quality Material: Made from premium low-carbon steel, our studs guarantee excellent mechanical strength and weldability, with a crack-free head for consistent structural performance.

Precision Cold-Forming: Manufactured on multi-station cold forming machines for exceptional dimensional accuracy and consistency. The round chamfer at the stud end facilitates easy insertion into ceramic ferrules.

Optimized Welding Design: The precise shank diameter ensures a secure grip in welding gun chucks. The flat weld end with a round chamfer allows for perfect alignment within the ferrule, resulting in a strong, uniform 360-degree weld collar every time.

Automated Flux Embedding: An accurately measured aluminum flux charge, embedded by automated equipment, ensures a stable arc and high-integrity welds, effectively minimizing cavities in the weld bead.

 

Surface Treatment

For long-term durability and corrosion resistance during storage and handling, our shear connectors undergo a pickling and phosphating surface treatment.


Properties & Specifications

Standard

Symbol

Material

Mechanical Properties

ISO 13918:2017

SD1

S235J2G3+C450

Yield point

(ReH) min.

350N/mm2

Tensile Strength

(Rm) min.

450N/mm2

Elongation

(A5) min.

15%

AWS D1.1:2015

Type B

ASTM A29 1010-1020

Yiled strength
(0.2% offset) psi

psi min.
MPa min

51,000
350

Tensile Strength

psi min.
MPa min

65,000
450

Elongation

% in 2 in min.

20%

% in 5x dia. Min.

15%

Reduction of area

% min.

50%

AWS D1.5:2015

Type B

ASTM A108 1010-1020

Yiled strength
(0.2% offset) psi

psi min.
MPa min

50,000
345

Tensile Strength

psi min.
MPa min

60,000
415

Elongation

% in 2 in min.

20%

Reduction of area

% min.

50%

AS/NZS 1552.2:2003

N/A

AS 1443 1010-1020

Yiled strength
(0.2% offset)

MPa min.

345

Tensile Strength

MPa min.

410

Elongation

% on 5.65√So min.

12%

Reduction of area

% min.

50%

BS 5400:2005

N/A

SWRCH 18A

Yiled strength
(0.2% proof stress)

MPa min.

385

Tensile Strength

MPa min.

495

Elongation

% on 5.65√So min.

18%

GB/T 10433:2002

N/A

ML15
ML15Al
SWRCH 15A

Yiled strength
(0.2% proof stress)

MPa min.

320

Tensile Strength

MPa min.

400

Elongation

% in 5x dia. Min.

14%

JIS B 1198-1995

N/A

SWRCH15A

Yiled strength
(0.2% proof stress)

MPa min.

235

Tensile Strength

MPa

400-500

Elongation

% on 5.65√So min.

20%

 

Specifications

Nominal Diameter (Ømm)Length Before Weld (mm)
Ø855 - 100
Ø1055 - 125
Ø1327 - 200
Ø1637 - 300
Ø1955 - 550
Ø2255 - 550
Ø2555 - 550

When inquiring or ordering, specify type, diameter, length before weld (LBW), quantity, ferrule type, terms, 

Exemple: SD1, 19 X 105LBW, 50,000pieces, UF19 ferrule, FOB China.

 

Welding Process

Drawn arc stud welding is the standard method for installing shear connectors, offering flexibility for both manual (using welding guns) and automated (using welding heads) applications on the construction site or in the factory. This reliable process ensures a strong, consistent connection between the steel member and concrete.

Here's a step-by-step breakdown of the shear stud welding procedure:

  • Setup & Preparation: The shear stud is securely inserted into the chuck of the stud welding gun. A ceramic ferrule, which is essential for shaping the weld, is placed over the welding end of the stud. The gun is then positioned against the prepared steel workpiece.

  • Ignition & Melting: Upon triggering the weld cycle, the stud is lifted slightly, drawing a pilot arc followed by the main arc between the stud tip and the base metal. The intense heat of the arc instantly melts the end of the stud and the corresponding area on the workpiece, creating a molten pool.

  • Plunging & Solidification: After a precisely controlled weld time, the spring mechanism of the gun plunges the stud into the molten pool with a controlled, low force (typically < 100 N). The welding current is simultaneously cut off. As the metal rapidly cools and solidifies, it forms a high-strength metallurgical bond.

  • Finishing: The ceramic ferrule, which has contained the molten metal and shaped the weld collar, is broken away and removed. This reveals a complete, 360-degree weld fillet that guarantees the specified shear strength.


The sequence of events is illustrated in the figure below.

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Drawn Arc Stud Welding Machine is a specialized equipment designed for the high-performance fastening of large-diameter studs to metal workpieces. Utilizing a controlled electrical arc, it rapidly heats and fuses studs to the base material, creating robust, permanent connections without the need for drilling, bolts, or additional consumables. This method is indispensable in steel construction, bridge building, and heavy manufacturing where structural integrity is critical.

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