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.

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