OK 76.98伊萨焊材

OK 76.98为一款适合焊接诸如T91/P91等改性9 Cr钢的低氢焊条。该焊条适用于管道和板材的全位置焊接。在此所列的机械性能参数为750°C热处理两小时之后测得。Typical Tensile Properties
PWHT 755°C 2h
Elongation	Tensile Strength	Yield Strength	保护气体	Stress Relieved Temperature	Stress Relieved Testing Time
21 %	820 MPa	720 MPa	ISO	-	-
Stress relieved
Elongation	Tensile Strength	Yield Strength	保护气体	Stress Relieved Temperature	Stress Relieved Testing Time
-	-	-	ISO	760 °C	3 hr
PWHT 755°C 2h
Elongation	Tensile Strength	Yield Strength	保护气体	Stress Relieved Temperature	Stress Relieved Testing Time
-	-	-	AWS	-	-

夏比V型缺口冲击性能
PWHT 755°C 2h
Impact Value	Testing Temperature	保护气体	Stress Relieved Testing Temp	Stress Relieved Testing Time
50 J	20 °C	ISO	-	-
Stress relieved
Impact Value	Testing Temperature	保护气体	Stress Relieved Testing Temp	Stress Relieved Testing Time
-	20 °C	ISO	760 °C	3 hr

焊缝金属分析
Mn
Mn	Mo	C	Nb	Si	V	Ni	Cr
0.8 %	-	-	-	-	-	-	-
Mo
Mn	Mo	C	Nb	Si	V	Ni	Cr
-	1 %	-	-	-	-	-	-
C
Mn	Mo	C	Nb	Si	V	Ni	Cr
-	-	0.1 %	-	-	-	-	-
Nb
Mn	Mo	C	Nb	Si	V	Ni	Cr
-	-	-	0.06 %	-	-	-	-
Si
Mn	Mo	C	Nb	Si	V	Ni	Cr
-	-	-	-	0.35 %	-	-	-
V
Mn	Mo	C	Nb	Si	V	Ni	Cr
-	-	-	-	-	0.24 %	-	-
Ni
Mn	Mo	C	Nb	Si	V	Ni	Cr
-	-	-	-	-	-	0.7 %	-
Cr
Mn	Mo	C	Nb	Si	V	Ni	Cr
-	-	-	-	-	-	-	9 %

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
56 sec	0.66 kg	71.4	70-100 A	0.90 kg/h	21 V	2.5 x 350 mm
68 sec	0.60 kg	45.5	90-135 A	1.20 kg/h	22 V	3.2 x 350 mm
85 sec	0.64 kg	22.6	130-200 A	1.90 kg/h	23 V	4.0 x 450 mm