What Are Chrome Blow Bars?
Chrome blow bars are made from high-chromium cast iron or steel alloys, with chromium content typically ranging from 12% to 28%. The addition of chromium significantly enhances the material’s hardness, wear resistance, and corrosion resistance. The microstructure of chrome blow bars often includes a matrix of hard, wear-resistant carbides dispersed in a tough martensitic or austenitic matrix, depending on the specific alloy and heat treatment.
Applicable Conditions
Properties: The outstanding characteristic of chromium steel is its enhanced hardness, which has a high wear resistance advantage in applications where both manganese and martensitic steels wear faster.
Recommended for:
- Secondary crushing of natural stone or river pebble
- When the feeding size is small
- No unbreakable object
Grade and Chemical Composition
| Grade | Chemical Composition (%) | ||||||||
| C | Si | Mn | Cr | Mo | Ni | Cu | S | P | |
| Cr12-DT | 1.1～2.0 | ≤ 1．5 | ≤ 2．O | 11.0～14.0 | ≤ 3．0 | ≤ 2．5 | ≤ 1.2 | ≤ 0．04 | ≤ 0．04 |
| Cr12-GT | 2.0～3.6 | ≤ 1．5 | ≤ 2．O | 11.0～14.0 | ≤ 3．0 | ≤ 2．5 | ≤ 1.2 | ≤ 0．04 | ≤ 0．04 |
| Cr15 | 2.0～3.9 | ≤ 1．2 | ≤ 2．O | 14.0～18.0 | ≤ 3．0 | ≤ 2．5 | ≤ 1.2 | ≤ 0．04 | ≤ 0．04 |
| Cr20 | 2.0～3.9 | ≤ 1．2 | ≤ 2．O | 18.0～23.0 | ≤ 3．0 | ≤ 2．5 | ≤ 1.2 | ≤ 0．04 | ≤ 0．04 |
| Cr26 | 2.0～3.9 | ≤ 1．2 | ≤ 2．O | 23.0～30.0 | ≤ 3．0 | ≤ 2．5 | ≤ 1.2 | ≤ 0．04 | ≤ 0．04 |
Note: This is only a standard chemical composition. The actual chemical composition needs to be adjusted according to the customer’s working conditions.
Metallographic Organization and Mechanical Properties
- Surface hardness: 60-64 HRC
- Impact Strengh: Around 10 J/cm²
No just Chrome Steel!
In order to meet the customer’s demand for higher wear resistance and longer service life. We’ve developed new high-end chrome ceramic blow bars.
With the same working conditions, the service life of the newly designed blow bars can be increased by 150% ~ 300%.
