ASTM A532 Class II Type B Chrome White Iron


ASTM A532 Class II Type B High Chromium Alloy

With the lower Cr and an expansion of Molybdenum, this amalgam is utilized in working situations where scraped spot and effect are the wear systems. With explicit warmth medicines it is conceivable to accomplish a high hardness for scraped spot opposition, and with a lower carbide proportion the strength is improved for sway. A Mo expansion improves the hardenability. With the lower Cr this material has lower erosion obstruction properties. 


Arrangement 


C

Mn

Si

Cr

Min%

2.7



14

Max%

3.3

1.3

1.0

17

 

Physical and Mechanical Properties (reference Abrasion Resistant Handbook)

Density lb/in(g/cm3)

0.26 (7.6)

Thermal Conductivity   Btu/hr·ft·F (W/m·K)

8.6-17.3 (15-30)

Specific Heat at 70F  Btu/lb·F (J/Kg·k)

0.119

Coefficient of Thermal Expansion Ɛ/F(Ɛ/C)X106 average between 70-1112F

7.2 (13)

Melting Temperature (F)

2300 F

Compressive Strength Ksi (MPa)

429 (2960)

Transverse Strength Ksi( MPa)

136 (938)




Typical Hardness


Brinell (depends on thickness)

As-Cast

450-550



Hardened

600-650


This amalgam meets the necessities for some, applications like mining smasher liners, feed-chute liners, cover feed liners, semi-autogenous ball plant liners, lifter bars, measuring grates, verti-plant liners and slurry siphons. 


This combination is likewise utilized in roller smasher applications. The roller smashers are utilized to crush coal, limestone, concrete, phosphate rock and other delicate to medium hard minerals. 


Balls in concrete clinker plants are another case of where this composite might be utilized.