HARD 65T
DIN 8555 E10-UM-65-GRZ
EN 14700 E Fe 16
CHARACTERISTICS
•HARD 65T produces a “premium” carbide weld deposit with a hardness range of 62-70HRc.
•The premium carbide microstructure makes HARD 65T ideally suitable for applications of high stress abrasion (crushing of abrasive particles), severe abrasion and abrasion at elevated temperatures (>700°C)
DESCRIPTION AND APPLICATIONS
The electrode deposits a high density of wear resisting carbides in an austenitic matrix capable of resisting extreme conditions of abrasion up to 700 °C. Recovery approximately 220 %. Typical applications include exhaust fans, ash ploughs, conveyor screws and sinter plant components.
DEPOSIT PROPERTIES
HARD ARC 43 deposits are non-machinable, grindable, prone to fine relief cracking and should be restricted to 3 layers high. While two layers of HARD ARC 43 may be required for maximum wear resistance, this complex carbide alloy has lower dilution sensitivity than straight chromium carbide deposits.
Notes on usage
(1) Preheat at 150℃ and over in general.
(2) It is desirable to postheat at about 600℃ .
(3) In case of multi-layer build-up welding or welding mother plates with hardening property, under-lay with low hydrogen type electrodes for mild steel.
(4) Dry the electrodes at 300~350℃ for 120 minutes before use.
Welding Position:
Typical Chemical Compositon(Wt%):
C | Mn | Si | Cr | Mo | Nb | W | V | Fe |
6.0 | 0.7 | 1.9 | 24.5 | 6.6 | 5.4 | 1.7 | 0.8 | Bal |
Typical hardness of weld metal
SINGLE-LAYER ONTO MILD STEEL | 62-65 HRC |
MULTI-LAYER | 65- 69 HRC |
• Single layer deposit hardness may vary depending on base metal type and degree of dilution.
Size & recommended current range
Dia.(mm) | 3.2 | 4.0 | 5.0 |
L(mm) | 350 | 400 | 400 |
Amp. | F | 100~ 150 | 140~ 200 | 170~250 |
• Recommended for DC + or AC (minimum 60 OCV) operation
