OK 74.70是一款适用于高强度低
合金钢焊接的LMA
焊条。该焊条非常适用于包括
管道焊接在内的各种应用。
Typical Tensile Properties
As welded
Elongation Tensile Strength Yield Strength 保护气体 Stress Relieved Temperature Stress Relieved Testing Time
25 ％ 650 MPa 550 MPa ISO - -
Stress relieved
Elongation Tensile Strength Yield Strength 保护气体 Stress Relieved Temperature Stress Relieved Testing Time
- - - AWS 620 °C 1 hr
夏比V型缺口冲击性能
As welded
Impact Value Testing Temperature 保护气体
120 J -20 °C ISO
90 J -40 °C ISO
焊缝金属分析
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 ％
熔敷数据
Fusion time per electrode at 90％ I max kg weld metal/kg electrodes Number of electrodes/kg weld metal 安培 熔敷率 电压 V 直径
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
