JQ.YR302 gas-shielded flux-cored welding wire

JQ.YR302

GB：E551T1-B2
AWS：E81T1-B2
Current：Suitable for welding 1Cr0.5Mo (such as 15CrMo) steel below 520
Main Applications：

JQ.YR302

According with GB/T 17493-1998 E551T1-B2
Corresponding with AWS A5.29 E81T1-B2
JIS Z3318 YF1CM-C

Introduction: It is a kind of gas-shielded flux-cored welding wire for heat-resistant steel. JQ.YR302 is a kind of titania type flux-cored welding wire with acid slag system. It has excellent welding performance, fewer spatters, stable arc, good slag detachability, beautiful appearance of weld and high welding efficiency. All-position welding.

Uses: Suitable for welding 1％Cr－0.5％Mo (such as 15CrMo) steel below 520℃.

Chemical Composition of Deposited Metal (%)(CO₂Shielding Gas)

Chemical Composition	C	Mn	Si	S	P	Mo	Cr
Guarantee Value	≤0.12	≤1.25	≤0.80	≤0.03	≤0.03	0.40~0.65	1.00~1.50
General Result	0.06	1.06	0.38	0.012	0.013	0.48	1.15

Mechanical Properties of Deposited Metal

Test Item	R_m(MPa)	R_eL或R_p0.2(Mpa)	A(%)
Guarantee Value	≥470	≥550	≥19
General Result	540	620	25

Reference Current (DC+)

Welding Position	Wire Diameter(mm)	Welding Current(A)	Welding Voltage(V)	Flow Rate(L/min)
Downhand Welding	φ1.2	120～300	24～32	20
Downhand Welding	φ1.6	200～400	22～34	20
Vertical Welding	φ1.2	150～250	24～28	20

Instructions:
1.The oil stains and rust on the weldments should be cleared away.
2.When welding, the gas flow rate is generally 20～25L/min.
3.When welding with flux-cored welding wires, the extension elongation should be 15～25mm.
4.The humidity of the welding wire storerooms should be preserved below 60%.
5.It is not suitable for non-vacuum-packed welding wires to be stored for more than half a year, and it is not suitable for vacuum-packed welding wires to be stored for more than a year.