JQ.YR302 gas-shielded flux-cored welding wire

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
Rm(MPa)
ReL或Rp0.2(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
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.

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