Wear parts center


High manganese steel liner

High manganese steel liner

Mill liners

Mill liners

Bi-metal liner

High chromium iron liner

High chromium iron liner

High manganese steel liner

We can provide you with various brands of liner , also can customize and produce according to your working conditions

The semi-autogenous ball mill liner is made of alloy steel, high-manganese steel, and bi-metal composite materials. The semi-self-milling liner is a thick and heavy spare part. Our company will provide you with safe and reliable high-quality wear according to its work characteristics. Liner, to extend the life cycle, increase production and increase efficiency

we can provides comprehensive material selection for you

High chromium iron


We use proper alloying and and related technological measures to make the blow bars’ surface hardness reaches more than 58HRC ,  during the process of wearing will maintain high hardness and high wear resistance.

Technology process

In blow bars’ working part we use the technique of directional solidification to make Cr7C3 type carbide is perpendicular to the part.The macro-hardness and micro hardness of carbide can be improved without reducing thoghness.


Suitable for making wearable spare parts with lower impact load and simpler shape.

Chemical component %
C Si Mn Cr Mo Ni Cu S P
BTMCr15 2.0~3.3 ≤1.2 ≤2.0 14~18 ≤3.0 ≤2.5 ≤1.2 ≤0.06 ≤0.10
BTMCr20 2.0~3.3 ≤1.2 ≤2.0 18~23 ≤3.0 ≤2.5 ≤1.2 ≤0.06 ≤0.10
BTMCr26 2.0~3.3 ≤1.2 ≤2.0 23~30 ≤3.0 ≤2.5 ≤2.0 ≤0.06 ≤0.10
1:Allowed to add microscale V,Ti,Nb,B and Re etc.
2:We will choose grade and specific component according to blow bars’ weight ,thickness and sizes

 Mechanical Property

                                                                         Surface Hardness

Casting condition

Harded condition

Softening annealing condition
BTMCr15 ≥46 ≥450 ≥58 ≥650 ≥41 400
BTMCr20 ≥46 ≥450 ≥58 ≥650 ≥41 400
BTMCr26 ≥46 ≥450 ≥58 ≥650 ≥41 400

1:There are no exact corresponing value between rockwell hardness(HRC) and brine hardness(HB),so ,this two kind of hardness value can be inspend used
2:The hardness in the 40%deepness of casting section should be lower than 92% hardness of surface.

Bimetal compisite material


This material adopt special technological process to make two material with different property integrate in the same time when they are liquid state.

The bonded area could reach 100% and the impact toughness of the bonded area can get more than 14J/cm2  ,the working part use high Cr casting iron and adopt directional solidification to make Cr7C3 which included in high Cr casting iron perpendicular distribute to the working surface .

The hardness could reach to HRC62-65,and the impact to toughness(AK) is above 30J/cm2 ,It can resist the cutting from AL2O3 and SiO2 perfectly show the high anti-friction property . the hammer handle with high toughness and perfect combined mechanical properties.the material have both high anti-friction and safety property and solve the contradiction between the hardness and toughness effectively ,make the spare parts fit the wicked working condition.

The lifetime of the hammer which made from bimetal composite material is 2-3 times than the lifetime of normal high Mn hammer .Specially suit for the big crusher hammer ,blow bar and liner of big mill .The effect will be prominent in the wicked condition .It is widely used in limestone ,cementclinker,iron,sandstone,gangue ,basalt and so on.

 Chemical component

                                Chemical component %
C Si Mn Cr Mo Ni S P
ZG38CrMnSiMoNiRe 0.35~0.45 0.4~0.8 0.4~1.0 0.5~2.0 0.20~0.80 0.3~2.0 ≤0.004 ≤0.004


 Mechanical Property


Surface Hardness HRC
Shock absorption energy
ZG38CrMnSiMoNiRe 50 25
High manganese steel


High manganese steel refers to high alloy steels containing more than 10% manganese. The biggest features of high-manganese steel are:

The greater external compressive stress or impact load, the more conducive to the formation of hardened layer, so the higher the wear resistance of the casting;

With the gradual wear of the hardened layer, new work hardened layers will continue to form under the influence of external compressive stress or impact loads. Therefore, it is suitable for making wearable spare parts that are subject to high impact load and wear for a long time, and is widely used in metallurgy, mining, building materials, railways, electric power, coal and other broken grinding equipment.

 Chemical component

Chemical component%
C Si Mn Cr S P
ZG120Mn13 1.05~1.35 0.3~0.9 11~14 - ≤0.06 ≤0.04
ZG120Mn13Cr2 1.05~1.35 0.3~0.9 11~14 1.5~2.5 ≤0.06 ≤0.04
ZG120Mn17Cr2 1.05~1.35 0.3~0.9 16~19 1.5~2.5 ≤0.06 ≤0.04
1:Allowed to add microscale V,Ti,B and Re etc.
2:We can produce the other grade high manganese steel  hammer according to customers’ requirments


Mechanical Property

                                   Stretch property Hardness HB
yield strength ReH/Mpa tensile strength Rm/Mpa Section elongation% impact absorbing energy Ku2J
ZG120Mn13 - ≥685 ≥25 ≥118 ≤300
ZG120Mn13Cr2 ≥390 ≥735 ≥20 -



Medium alloy steel


The alloy structure cast steel is an iron-carbon alloy formed by adding an appropriate amount of one or more alloy elements on the basis of ordinary carbon steel.

Process technology

According to the different elements added, with appropriate smelting and heat treatment process to obtain high strength, high toughness, high wear resistance, corrosion resistance, low temperature resistance, high temperature resistance, non-magnetic and other related special properties.

Scope of application

It is suitable for producing the wear-resisting spare parts with good mechanical strength and good toughness that are required for various working conditions, and the main steel structure castings with the required dynamic load.


Chemical component

Chemical component%
C Si Mn Cr Mo S P Ai
ZG42CrMo 0.38-0.43 0.15-0.35 0.75-1.00 0.80-1.10 0.15-0.25 <0.04 <0.035 -
ZG35CrMo 0.32~0.40 0.17~0.37 0.40~0.70 0.80~1.10 0.15~0.25 ≤0.035 ≤0.035 -
ZG38CrMoAl 0.35~0.42 0.20~0.45 0.30~0.60 1.35~1.65 0.15~0.25 ≤0.04 ≤0.04 0.7~1.1
ZG40Cr 0.37~0.45 0.17~0.37 0.5~0.8 0.8~1.1 - - - -
ZG30Mn2SiCrMo 0.25~0.35 0.40~0.80 1.20~1.60 1.35~1.65 0.2~0.5 ≤0.04 ≤0.04 -


 Mechanical Property

 Grade tensile strength(Mpa) yield strength  (Mpa) Section elongation(%) rate of reduction in area(%) impact absorbing energy (KV2/J)
ZG42CrMo ≥1080 ≥930 ≥12 ≥20 ≥24
ZG35CrMo ≥985 ≥835 ≥12 ≥20 ≥24
ZG38CrMoAl ≥980 ≥835 ≥14 ≥20 ≥24
ZG40Cr ≥980 ≥785 ≥9 ≥20 ≥24
ZG30Mn2SiCrMo ≥1500 ≥1300 ≥3 - ≥24




In 1928, the International Nickel Corporation developed a white cast iron containing Ni3-5%, Cr1.5-3%, which is called nickel hard cast iron. After continuous development and long-term production practices, a nickel hard cast iron material that meets the requirements of different working conditions has been formed.

Nickel can effectively improve the gradual hardenability and obtain a matrix mainly composed of martensite. The as-cast microstructure of nickel hard cast iron is (Fe, Cr) 3C + martensite + retained austenite. Through heat treatment, Get bainite + tempered martensite.

Nickel hard cast iron chemical composition and hardness requirements (applicable to the mark of Standard ASTM A532-99)


Metallurgical rolls, linings and balls for ball mills, sticks and rings for coal mills, linings and scrapers for mills, pump and impeller pumps for mud pumps, conveying pipes, etc.

 Chemical component

Grade                                Chemical component%
C Si Mn P S Ni Cr Mo
NiCrHC    2.8~3.6    ≤0.8    ≤2.0    ≤0.30    ≤0.15    3.3~5.0    1.4~4.0   ≤1.0     
NiCrLC 2.4~3.0 ≤0.8 ≤2.0 ≤0.30 ≤0.15 3.3~5.0 1.4~4.0 ≤1.0
NiCrGB 2.5~3.7 ≤0.8 ≤2.0 ≤3.0 ≤0.15 ≤4.0 1.0~2.5 ≤1.0
NiHiCr 2.5~3.6 ≤2.0 ≤2.0 ≤1.0 ≤0.15 4.5~7.0 7.0~11.0 ≤1.5


Hardness requirement 

Grade Sand casting  Metal casting After annealing
Hardness after as-cast or stress relief treatment(Value) Quenching or quenching plus stress relief hardness after treatment (lowest value) hardness(lowest value) Hardness(highest value)
One quenching The second quenching
NiCrHC 550 53 600 56 650 59 600 56 - -
NiCrLC 550 53 600 56 650 59 600 56 - -
NiCrGB 550 53 600 56 650 59 600 56 400 41
NiHiCr 500 50 600 56 650 59 550 53 - -


 Crusher brand accessories we accept customized

Thyssen Krupp Fuller( FLSmidth) Mesto Sandvik Hongxing Humboldt
Raymond Pfeiffer Losche Polusius Svedala( Metso) CITIC( CITIC Heavy Industries)
Krupp Polysius( Cement industry) Tyazhmash( Russia) ANI      

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Luoyang Zhili cooperated with Lafarge-holcim cement group in India

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