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Wear/Abrasion Resistant Clad Hardbanding Bimetal Steel Plates
1. Base Material:
ASTM A36(Q235B), ASTM A529A(Q345B), other weldable steel is optional;
Base thickness: 3 to 30 mm
2. Hardfacing Layer:
Chromium carbon alloy on Fe basis(austenite)
Bulk hardness: >630HV
Mean hardness: >55HRC
Layer thickness: 3 to 30 mm
3. Welding Processes:
Advanced open arc welding and submerged arc welding
4. Alloy Description:
Austenitic chrome carbide iron(Chromium white iron)
5. Carbide Hardness:
>1500HV
6. Volume Fraction of Carbide:
>30%
7. Chemical Composition:
Carbon: 3-6%
Chromium: 18-34%
*Various alloys to be used depend on different operating condition and applications.
Thick | C% | Cr% | Mn% | Si% | HRC | |
3 on 3 | 3~4 | 18~20 | 0.5~1 | 0.5~1 | 56~58 | |
3 on 4 | 3~4 | 18~20 | 0.5~1 | 0.5~1 | 56~58 | |
3 on 5 | 3~4 | 18~22 | 0.5~1 | 0.5~1 | 58~60 | |
3 on N | 3.5~4.5 | 20~25 | 0.5~1 | 0.5~1 | 58~62 | N>5 |
4 on N | 3.5~4.5 | 20~25 | 0.5~1 | 0.5~1 | 58~62 | |
5 on N | 4~6 | 23~25 | 0.5~1 | 0.5~1 | 58~62 | |
6 on N | 4~6 | 24~28 | 0.5~1 | 0.5~1 | 58~62 | |
7 on N | 4.5~6 | 24~28 | 0.5~1 | 0.5~1 | 58~62 | |
8 on N | 4.5~6 | 24~28 | 0.5~1.5 | 0.5~1 | 58~62 | |
9 on N | 5~6 | 26~30 | 0.5~1.5 | 0.5~1 | 60~64 | |
10 on N | 5~6 | 26~30 | 0.5~1.5 | 0.5~1 | 60~64 | |
11 on N | 5~6 | 26~30 | 0.5~1.5 | 0.5~1 | 60~64 | |
12 on N | 5~6 | 26~34 | 0.5~1.5 | 0.5~1 | 60~64 | |
N on N | 5~6 | 26~34 | 0.5~2 | 0.5~1 | 60~64 | N>12 |
8. Microstructure:
Composed of a high proportion of extremely hard primary M7C3 chromium rich carbides dispersed in a ductile eutectic austenite matrix.
Maintains 30% to 50% of primary carbides to provide a good wear resistance and homogenous bonding.
9. Typical Applications:
HART-P-100 Plate is widely used in the mining, power generation(Coal), cement, dredging, steel production, waste handling, glass production, and pulp and paper industries. Some specific applications include:
INDUSTRY | APPLICATONS |
Mining | Chutes, hoppers, liners for truck beds, dozer blades, shovel buckets, dragline buckets, excavators |
Cement | Separator guide vanes, discharge cones for clinker storage bins, chutes for sintering ore conveying, outlet ducts for clinker grinding mills, receiving hoppers |
Dredging | Dredging pipes and pumps, suction pipelines, pump discharges |
Steel | Dredging pipes and pumps, suction pipelines, pump discharges |
Power | Coal handling chutes, coal feeder liners, crusher screen plates, classifier cones, journal liners, silo bunkers |
10. Wear properties of HART-P-100 (ASTM G65 and SGS test report)
*ASTM G65 is a standard test measuring sliding abrasion resistance using a dry sand/rubber wheel apparatus.
HARDBANDING ALLOY | ASTM G65 -- WEIGHT LOSS | HARDNESS (RC) |
10+10-8 | 0.162 g/6000 revs | 64.7 |
10+10-4 | 0.183 g/6000 revs | 63.7 |
10+10-2 | 0.149 g/6000 revs | 64.0 |
11. Service
SERVICE | DESCRIPTION |
Cutting | 1. Can be cut by plasma, laser, water jet, arc gouge, and abrasive saw cutting; |
Welding | 1. Use 480 MPa (70 ksi) or 560 MPa (80 ksi) consumable to join base metal; |
Machining | 1. Not machinable by conventional methods; |
Forming | 1. Commonly formed with overlay to the inside; |
Drilling | 1. When drilling, the distance between two holes should be at least 15mm (5/8''); Otherwise, the partition may not be strong enough and can crack; |