Wear Resistant Alloys
Overview
Today, due to higher performance of equipment and products, more machines are operated at a higher speed and higher pressure, under heat and corrosion resistant conditions. In addition, users' demands are becoming more diversified and sophisticated with regard to wear and abrasion. Maintenance-free products with reduced detrition-caused noise and longer life cycle are required.
Based on accumulated during over 40 years technological experience, Hitachi Metals, Ltd. Okegawa Works manufactures various wear-resistant alloys and alloy powders and also offers related consulting services.
The following list, for reference, is a comprehensive introduction to the various types of wear-resistant alloys. Please note that the values presented are average and are not guaranteed.
Lineup
| Material | Typical application |
|---|---|
| BISHILITE (MHA) No.1 | Screw blade, crusher, mixer, saw blade |
| BISHILITE (MHA) No.4 | Dies for dry cell batteries |
| BISHILITE (MHA) No.6 | Internal combustion exhaust valve, high-pressure high-temperature valve, sleeve |
| BISHILITE (MHA) No.6H | Internal combustion exhaust valve, high-pressure high-temperature valve, sleeve |
| MS No.6B | Erosion shield |
| BISHILITE (MHA) No.12 | Internal combustion exhaust valve, hot extrusion dies, molten glass cutter |
| BISHILITE (MHA) No.21 | Hot forging dies, hot shear, valve mill screw |
| BISHILITE (MHA) No.32 | Automobile engine valve, chemical engineering valve |
| BISHILITE (MHA) No.190 | Rock bits for oil drilling |
| BISHILITE (MHA) No.1016 | Marine engine valve, chemical engineering valve |
| MC501 | Chemical engineering centrifuge |
| MC502 | Paper manufacturing centrifuge , shovel, shovel basket |
*MHA : HARDFACING ALLOYS
*BISHILITE is a registered trademark of Hitachi Metals, Ltd.
Composition
| Chemical composition of welding rod | Hardness HRC | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | Co | Ni | Cr | W | Mo | Fe | C | other | Oxy-acetylene | Coated arc | TIG | PTA |
| BISHILITE (MHA) No.1 |
Bal | ≦3 | 30 | 12 | - | ≦3 | ≦2.5 | - | 54 | 46 | 53 | 54 |
| BISHILITE (MHA) No.6 |
Bal | ≦3 | 28 | 4 | - | ≦3 | 1 | - | 44 | 37 | 43 | 40 |
| BISHILITE (MHA) No.12 |
Bal | ≦3 | 29 | 8 | - | ≦3 | 1.35 | - | 48 | 40 | 47 | 47 |
| BISHILITE (MHA) No.21 |
Bal | 2.5 | 27 | - | 5 | ≦2 | 0.25 | - | X | 33 | 25 | 30 |
| BISHILITE (MHA) No.32 |
Bal | 22 | 26 | 12 | - | - | 1.8 | - | 43 | - | 41 | 44 |
| BISHILITE (MHA) No.190 |
Bal | - | 26 | 14 | - | - | 2.5 | - | 56 | - | 57 | 56 |
| BISHILITE (MHA) No.1016 |
Bal | ≦3 | 32 | 17 | - | ≦3 | 3.2 | - | 57 | - | 57 | 58 |
| MC501 | Composite of Tungsten carbide+Hastelloy | 76 (HRA) |
- | - | ||||||||
| MC502 | Composite of Tungsten carbide+Bishilite (MHA) | 83 (HRA) |
- | - | ||||||||
*MHA : HARDFACING ALLOYS
*BISHILITE is a registered trademark of Hitachi Metals, Ltd.
Product Shape
(note) (G)Oxy-acetylene gas process, (D)Coated arc process, (T)TIG process, (P)PTA process, (C)Castings, (W)Forged and pressed
A=Available, N/A=Not Available
E=Excellent, G=Good, U=Unsatisfactory
| Material | Hardness (example) |
Available form | Properties | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Filler rod |
Covered rod |
Powder | Plate Bar Wire |
Metal to metal wear |
Impact | Erosion | Corrosion | Cold abrasion |
Hot abrasion |
||
| BISHILITE (MHA) No.1 |
54(G) 46(D) 53(T) 54(P) |
A | A | A | N/A | E | U | E | E | E | E |
| BISHILITE (MHA) No.4 |
44(P) 40(C) |
A | A | A | N/A | E | E | E | E | G | G |
| BISHILITE (MHA) No.6 |
44(G) 37(D) 43(T) 40(P) |
A | A | A | N/A | E | E | E | E | G | G |
| BISHILITE (MHA) No.6H |
45(T) 42(P) 38(D) |
A | A | A | N/A | E | E | E | E | G | G |
| MS No.6B |
38(W) | N/A | N/A | N/A | A | E | E | E | E | G | G |
| BISHILITE (MHA) No.12 |
48(G) 40(D) 47(T) 47(P) |
A | A | A | N/A | E | G | E | E | E | E |
| BISHILITE (MHA) No.12H |
48(T) | A | A | A | N/A | E | G | E | E | E | E |
| BISHILITE (MHA) No.21 |
25(T) 30(P) 33(D) |
A | A | A | N/A | E | E | E | E | G | G |
| BISHILITE (MHA) No.21E |
25(T) 30(P) 33(D) |
A | A | A | N/A | E | E | E | E | G | G |
| BISHILITE (MHA) No.32 |
43(G) 44(P) 41(T) |
A | N/A | A | N/A | E | E | E | E | G | G |
| BISHILITE (MHA) No.190 |
56(G) 56(P) 57(T) |
A | N/A | A | N/A | E | U | E | E | E | G |
| BISHILITE (MHA) No.1016 |
57(G) 58(P) 57(T) |
A | N/A | A | N/A | E | U | E | E | E | G |
| MC501 | HRA 76(G) |
A | N/A | A | N/A | E | U | G | G | E | E |
| MC502 | HRA 83(G) |
A | N/A | A | N/A | E | U | E | G | E | E |
*MHA : HARDFACING ALLOYS
*BISHILITE is a registered trademark of Hitachi Metals, Ltd.
Available Specifications
1) Bare bar
AWS A5.21
ASME Section Ⅱ Part C SFA-5.21
| Alloy | Alloy Code |
|---|---|
| BISHILITE (MHA) No.1 | ERCoCr-C |
| BISHILITE (MHA) No.6 | ERCOCr-A |
| BISHILITE (MHA) No.12 | ERCOCr-B |
| BISHILITE (MHA) No.21 | ERCOCr-E |
| BISHILITE (MHA) No.32 | ERCOCr-F |
| BISHILITE (MHA) No.190 | ERCOCr-G |
2)Coated arc welding rod
AWS A5.13
ASME Section Ⅱ Part C SFA-5.13
| Alloy | Alloy Code |
|---|---|
| BISHILITE (MHA) No.1 | ERCoCr-C |
| BISHILITE (MHA) No.6 | ERCOCr-A |
| BISHILITE (MHA) No.12 | ERCOCr-B |
| BISHILITE (MHA) No.21 | ERCOCr-E |
*MHA : HARDFACING ALLOYS
*BISHILITE is a registered trademark of Hitachi Metals, Ltd.
