H09MnDR SJ208DR GB/T 12470 H10Mn2

H09MnDR SJ208DR GB/T 12470 H10Mn2

H09MnDR is a kind of copper coated submerged arc welding wire used with SJ208DR and designed for automatic submerged arc welding. It has excellent slag removal, good bead appearance and good impact toughness under -46℃.
Application: Used for welding low temperature steel structures under -46℃, such as 16MnDR etc.

Notes on Usages:
1. The wires must be baked under 300℃~400℃ for two hours before welding. The wires must
be dry, oil free, rust free before used.
2. The stains on the weldments, such as rust, oil stains, moisture, etc., must be cleared away
before welding.
3. According to the different thickness and steel grade, preheating shall be carried out at 50℃~100℃
when welding.
4. The welding heat input must be controlled when welding the first weld bead on groove, so as
to prevent cracking and burning through.