Products

YAWATA BT-52 (For Mild Steel)

Classification : AWS A 5.1 : E6013, JIS Z 3211 : E4313

Approvals : ABS, BV, DNV, LR, TIS

Applications : Welding of mild steel sheet for ships, rolling-stocks, structures, and finished welding of heavy structural works.

Property

YAWATA BT-52 is a rutile-cellulosic type electrode for a wide variety of mild steel fabrication and assembly application. Ideally suited for welding in the vertical-downward position where it produces slightly concave welds merging smoothly into the base metal without any undercutting. Due to its excellent all positions operability and weld pool control, it is preferably used for welding sheet metal containers, storage vessels, and oil tanks. In assembly work, it is possible to apply the same current setting in all positions. The slag comes off very easily as in most cases self-releasing. Welding bead appearance is smooth with fine ripple formation. Also use with welding transformers having a low O.C.V. (42V).

Classification

AWS A 5.1 : E6013
JIS Z 3211 : E4313

Chemical Composition

	C	Si	Mn	P	S	Cr	Mo	Ni	V	C.L.
Req.	≤0.20	≤1.00	≤1.20	N.S.	N.S.	≤0.20	≤0.30	≤0.30	≤0.08	N.S.
Typ.	0.08	0.33	0.40	0.010	0.010	0.06	0.01	0.06	0.03	0.55

Req. = Requirement
Typ. = Typical results
N.S. = Not Specified
C.L. = Combined Limit for Mn + Ni + Cr + Mo + V

Mechanical Properties

	Tensile Strength N/mm² (kgf/mm²)	Yield Strength N/mm² (kgf/mm²)	Elongation %	Charpy 2V-notch at 0^๐C, J (kgf.m)
Req.	≥430 (42)	≥430 (42)	≥17	N.S. (AWS A5.1) ≥47 (ISO 2560-A)
Typ.	498	450	25	66 (6.7)

Recommended Size and Power Range

Diameter /Length (mm)	2.6/350	3.2/350	4.0/400	5.0/400
Welding Position	Current (A)
All	60-85	90-130	140-180	180-240

Recommendations for Use

1. Use dry electrodes only.
2. If coating flux absorbs excessive moisture, arc and slag fluidity become unstable, spatters increase, undercuts and blowholes are apt to occur. Damp electrodes should be redried at 70～120℃ for 60 minutes.