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YAWATA H-800 (For Earth & Sand Abrasion)

Classification : DIN 8555 : E 6-UM-65

Approvals : TIS

Applications : Surfacing of dredger pump mouths, impellers, liners and cutter knives.

Property

YAWATA H-800 is a low hydrogen type electrode to give extremely hard deposited metal due to dispersedly precipitated borides and carbides. Although it is not suitable for impact abrasion since deposited metal tends to crack, it shows excellent resistance to earth and sand abrasion.

Classification

DIN 8555 : E 6-UM-65

Chemical Composition

	C	Si	Mn	Cr	Mo	B
Req.	0.20-2.00	N.S.	N.S.	>5.00	N.S.	N.S.
Typ.	0.83	1.04	1.18	7.44	0.45	0.24

Req. = Requirement
Typ. = Typical results
N.S. = Not Specified

Mechanical Properties

Vicker(Hv)	Rockwell C (HRC)	Shore	Heat treatment
624	56	75	As welded; preheat, interpass 250^๐C

Recommended Size and Power Range

Diameter /Length (mm)	3.2/350	4.0/400	5.0/450
Welding position	Current (A)
F	120-150	150-190	180-230

Recommendations for Use

1. Use dry electrodes only. Damp electrodes should be re-dried at 300～350℃ for 60 minutes before use.
2. Preheating at more than 200℃ is required.
3. Multi-layer welding is not recommended. It should be used for the surfacing of the final layer.