The document provides information about an MMA electrode with a basic flux coating and mild steel core wire used for welding low alloy steels. It lists the classifications, chemical composition, mechanical properties, operating parameters, packaging data, and fume data for the electrode.
The document provides information about an MMA electrode with a basic flux coating and mild steel core wire used for welding low alloy steels. It lists the classifications, chemical composition, mechanical properties, operating parameters, packaging data, and fume data for the electrode.
The document provides information about an MMA electrode with a basic flux coating and mild steel core wire used for welding low alloy steels. It lists the classifications, chemical composition, mechanical properties, operating parameters, packaging data, and fume data for the electrode.
The document provides information about an MMA electrode with a basic flux coating and mild steel core wire used for welding low alloy steels. It lists the classifications, chemical composition, mechanical properties, operating parameters, packaging data, and fume data for the electrode.
PRODUCT DESCRIPTION MMA electrode with a basic flux coating on high purity mild steel core wire. Moisture resistant coating provides very low weld metal hydrogen levels. Recovery is about 120% with respect to core wire, 65% with respect to the whole electrode.
CLASSIFICATIONS ASME IX QUALIFICATION
AWS A5.5M E10018-D2 H4 QW432 F-No 4 ISO 18275-A (E 624 MnMoB) QW442 A-No 11 APPROVALS DNV WELDING POSITIONS (ISO/ASME)
PA/1G PB/2F PC/2G PF/3Gu PE/4G
CHEMICAL COMPOSITION (WELD METAL WT %)
C Mn Si S P Cr Ni Mo Cu Min. 0.07 1.65 0.20 -- -- -- -- 0.25 -- Max. 0.15 2.00 0.60 0.025 0.025 -- 0.9 0.45 -- Typical 0.10 1.8 0.4 0.01 0.015 0.15 0.6 0.35 0.05
ALL-WELD MECHANICAL PROPERTIES
Typical after PWHT: min 620°C/1h * 645°C/4h ** Tensile strength (MPa) 690 760 700 0.2% proof strength (MPa) 620 690 620 Elongation (%) 4d 16 25 26 5d 18 21 22 Reduction of area (%) -- 65 67 Impact ISO-V(J) 0°C -- -- >100 - 40°C 27 >27 >60 Hardness HV -- 250 230 HRC -- -- <22 * PWHT according to AWS. ** PWHT typically applied to weldments in alloy 4130 to meet <22HRC in HAZ for oilfield sour service (NACE MR0175).
OPERATING PARAMETERS, DC +VE OR AC (OCV: 70V MIN)
Diameter (mm) 2.5 3.2 4.0 5.0 6.0 min. A 70 80 100 140 200 max. A 110 140 180 240 300
PACKAGING DATA Diameter Length Item No of pieces Weight (kg) (mm) (mm) number can box can box 2.5 350 E10018D2-25 230 690 4,5 13.5 3.2 350 E10018D2-32 117 351 4,2 12.6 METAL CAN 4.0 450 E10018D2-40 81 243 5,6 16.8 5.0 450 E10018D2-50 53 159 5,7 17.1 Redrying : 250 – 300°C/1-2h to ensure H2 < 10ml/100g, 300 – 350°C/1-2h to ensure H2 < 5ml/100g. Maximum 420°C, 3 cycles, 10h total.
FUME DATA (WT % TYPICAL)
Fe Mn Ni Cr Cu F OES (mg/m3) 16 7 <0.1 <0.1 <0.2 17 5
