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Arc Welding Stud

Weld Stud Supplied From AGICO

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ML15AL Arc Weld Studs for Steel Structural Plant Buildings refer to shear studs manufactured using ML15AL or other alloy metals as the raw material. It is also known as arc welding stud. The studs have a nominal diameter ranging from 10mm to Ф25mm. Custom sizes such as M16, M19, M22, and M25 are also available. Quality inspection certificates and other quality documents, such as a quality assurance sheet, can be provided.

According to the national standard GB10433, the surface of the cylindrical head weld studs for steel structural plant buildings should be free from rust, oxidation, grease, and burrs. The shank of the weld studs should not have any cracks that affect their usability, but the depth (radial) of cracks in the head should not exceed 0.25 (dk-d) mm.

Arc Weld Stud Equivalent Standard

Hot sell Standard Tensile strength Yield strength Elongation
EN ISO 13918 SD1 ≥450 Mpa ≥350 Mpa ≥15%
AWS D1.1 TYPE B ≥450 Mpa ≥350 Mpa ≥15%
BS 5400 ≥495 Mpa ≥385 Mpa ≥18%
AS/NZS 1554.2 ≥410 Mpa ≥345 Mpa ≥12%
JIS B1198 ≥400 Mpa ≥235 Mpa ≥20%
GB/T 10433 ≥420 Mpa ≥340 Mpa ≥14%

GB/T10433-2002 Dimensions of Arc Welding Studs

d Nominal 10 13 16 19 22 25
min 9.64 12.57 15.57 18.48 21.48 24.48
max 10 13 16 19 22 25
dk max 18.35 22.42 29.42 32.5 35.5 40.5
min 17.65 21.58 28.58 31.5 34.5 39.5
d1(1)  13 17 21 23 29 31
h(1)  2.5 3 4.5 6 6 7
k max 7.45 8.45 8.45 10.45 10.45 12.55
min 6.55 7.55 7.55 9.55 9.55 11.45
r min 2 2 2 2 3 3
WA  4 5 5 6 6 6
L1(2) (3)Mass per 1000 pieces (density 7.85g/cm 3 ) 5)    kg≈
40 37 62        
50 43 73 116      
60 49 83 131 188    
80 61 104 163 232 302 404
100 74 125 195 277 362 481
120 86 146 226 321 422 558
150 105 177 274 388 511 673
180 123 208 321 455 601 789
200   229 352 499 660 866
220     384 544 720 943
250     431 611 810 1050
300       722 959 1251

1) Measurement position: 2d from the end of the welding stud.
2) Guideline values. In special cases, such as penetration flat welding, this dimension may be different.
3) WA is the melting length.
4) L1 is the design value of the length after welding. For special occasions, such as penetration flat welding, it is shorter.
5) The theoretical mass of the welding stud before welding.

Arc Weld Stud Application:

Arc Weld Stud Application:

Chemical Composition of Arc Weld Stud

Chemical Component Of Material (%)
Material C Si Mn P S Al
SWRCH15A 0.13-0.18 ≤0.10 0.30-0.60 ≤0.035 ≤0.035 ≥0.020
SWRCH18A 0.15-0.20 ≤0.10 0.60-0.90 ≤0.030 ≤0.035 ≥0.020
Q345D ≤0.18 ≤0.50 ≤1.70 ≤0.030 ≤0.025 ≥0.015

Arc Welding Stud Material and Mechanical Properties

Material Standard Mechanical behavior
MI15、ML15Al GB / T 6478 σ b ≥400 N/mm 2 ,
σ s or σ p0.2 ≥320 N/mm 2
δ 5 ≥14%

Ceramic Ferrules for Arc Weld Studs (UF)

 Dimensions of B1 Type Ceramic Ferrules for Stud Weld (UF) (mm)
 diameter of stud weld studs with ceramic ferrules d   D   D1   D2   H 
 min max 
 10 10.3  10.8  14  18  11 
 13 13.4  13.9  18  23  12 
 16 16.5  17  23.5  27  17 
 19 19.5  20  27  31.5  18 
 22 23  23.5  30  36.5  18.5 
 25  26 26.5  38  41.5  22 
Key 1. B1 type ceramic ferrules are mainly used for general downward welding as well as welding M13mm and M16mm stud weld studs with ceramic ferrules through metal deck. 2. B2 type ceramic ferrules are only used for welding M19mm stud weld studs with ceramic ferrules through metal deck. 3. The types of ceramic ferrules are at manufacturer’s discretion.

5 Advantages of Arc Weld Studs for Steel Structural Buildings

  1. Materials such as ML15, ML15AL, SWRCH15A, and SWRCH18A are selected from high-quality wire rods produced by state-owned large steel mills.
  2. The raw materials undergo phosphating and wire drawing treatments to prevent rust.
  3. The dimensions strictly adhere to the national standard GB10433 and the international standard ISO13918.
  4. Automatic machine anchoring is used for the arc initiation point to prevent detachment, ensuring a more secure connection. The heads are chamfered, and the welding is uniform.
  5. Quality assurance documents, inspection reports, and certificates of conformity can be provided for products. The products can be subjected to testing by authoritative third parties.
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