OK 74.70是一款適用于高強度低合金鋼焊接的LMA焊條。該焊條非常適用于包括管道焊接在內(nèi)的各種應(yīng)用。

Typical Tensile Properties

As welded
Elongation	Tensile Strength	Yield Strength	保護氣體	Stress Relieved Temperature	Stress Relieved Testing Time
25 %	650 MPa	550 MPa	ISO	-	-
Stress relieved
Elongation	Tensile Strength	Yield Strength	保護氣體	Stress Relieved Temperature	Stress Relieved Testing Time
-	-	-	AWS	620 °C	1 hr

夏比V型缺口沖擊性能

As welded
Impact Value	Testing Temperature	保護氣體
120 J	-20 °C	ISO
90 J	-40 °C	ISO

焊縫金屬分析

Mn
Mn	Mo	C	Si
1.5 %	-	-	-
Mo
Mn	Mo	C	Si
-	0.45 %	-	-
C
Mn	Mo	C	Si
-	-	0.08 %	-
Si
Mn	Mo	C	Si
-	-	-	0.4 %

熔敷數(shù)據(jù)

Fusion time per electrode at 90% I max	kg weld metal/kg electrodes	Number of electrodes/kg weld metal	安培	熔敷率	電壓 V	直徑
63 sec	0.58 kg	50	80-140 A	1.14 kg/h	23 V	3.2 x 350 mm
91 sec	0.61 kg	25	80-140 A	1.6 kg/h	23 V	3.2 x 450 mm
93 sec	0.63 kg	24	90-190 A	1.66 kg/h	24 V	4.0 x 450 mm