• STANDARDS OF STUD & CERAMIC FERRULE
  • Product Sheet

MECHANICAL PROPERTY REQUIREMENTS

Tensile Strength
(PSI) Mpa
YIELD STRENGTH (PSI) Mpa (0.2% OFFSET)ELONGATION %REDUCTION AREA %SPECIFICATION
450 MIN (65,000)350 MIN (51,000)MIN 20MIN 50AWS D1.1 :2000
DIN 17100 ST37-3
BS5950 pt.3
JIS B1198
ISO 13918(SD)
GB/T 10433-2002
495 MIN (72,000)385 MIN (56,000)MIN 18-BS 5400 pt.5

STUD DIA.BODY DIAMETER (d)BEFORE WELD LENGTH (L1)HEAD DIA. (D)HEAD HEIGHT (T)FERRULE TYPEAD1H
(1/2)0+1VERTICAL14.021.010.0
12.9525.4 ± 0.48-
13-0.250WELD THRU---
(5/8)0+1VERTICAL17.030.014.5
15.9531.7 ± 0.48
16-0.250WELD THRU17.030.018.0
(3/4)0L1 ± 1.6+1VERTICAL20.532.016.5
19.031.7 ± 0.49.5
19-0.380WELD THRU20.532.016.5
(7/8)0+1VERTICAL23.536.018.0
22.134.9 ± 0.49.5
22-0.380WELD THRU23.540.021.0
(1)0+1VERTICAL26.541.021.0
25.441.3 ± 0.412.7
25-0.380WELD THRU---


  • MOLTEN AREA TEST

  • TENSILE TEST
    TESTED & CONSIDERED
    AS QUALIFIED IF SPECIMENS
    DO NOT FAIL IN THE WELD
    AREA.

  • HAMMER TEST
    ALTERNATIVELY,
    15° OR 45° HAMMER,
    FRACTURE DOES NOT
    OCCUR IN WELD AREA.

PATTERN GUN SET-UP APPLICATION



  1. VERTICAL WELD – 4mm APPROX.

  2. WELD-THRU DUCK – 8mm APPROX.

APPLICATIONS:

  1. Studs should be free from rust, rust pits, oil, moisture.
  2. The arc shields of ferrules should be kept dry and free from broken knots in concrete.
  3. Should moisture occur in any of the ferrule or shield, studs and base metal during its operation may possibly cause welding defects.
  4. The areas to which the studs are to be welded shall be free to the necessary extent to obtain satisfactory welds and prevent objectionable fumes.
  5. Studs shall be welded with automatic equipment connected to a suitable power source with proper voltage, current time and gun settings for lifts and plunge optimum settings. One gun only at a time.
  6. First two studs tested for each start of new production shift or change in size are required.
  7. A stud on which not being well welded could be welded an additional stud just right beside it.
  8. Any studs that does not show a full 360 welding flash shall be made by bending test at opposite direction.
  9. Striking away ferrule right after welding with visual inspection.
DIA(d)
LENGTH(L1)
13mm (1/2)16mm (5/8)19mm (3/4)22mm (7/8)25mm (1)
5074----
5579121161--
6083130173--
6487137182237-
7094146195255364
7699155208273388
80104161217285404
85109169227300424
90144176238314444
95119184248329464
100124192259342484
106-199271358508
110-207281373524
115-214292388544
120-222303402564
125-230313417584
130-238324432604
140-346462644
150-368490684
160-390520724
165--400535744
180--433595804