STANDARD ALLOYS INDIACr-Mo and martensitic steels
General duty with moderate abrasion.
IS 4896 · Customer specification
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Grinding paths
The grinding path sits close under the rotor and gives the feed a last crushing pass before it leaves the crusher. Its gap to the blow bars sets the product size, so even wear keeps the product in specification.
- Works in
- The grinding path beneath the rotor of impact crushers, which adds a final crushing stage.
- Industries
- Cement, Aggregate
- Materials
- Cr-Mo steel, High-chromium iron, Manganese steel
- Size
- Single pieces from 3 kg to 7 tonnes, to drawing
- Supplied
- As cast, or machined to drawing
- Inspection
- Chemistry and hardness on every heat; UT, MPI or DPT and a dimensional report as specified
- From a worn part
- Yes. Send the part or photographs with key dimensions and we will reverse-engineer it
01
How it fails and what we do about it
- 01Wear that opens the gap to the rotorGrade matched to the feed and to the blow bar alloy.
- 02Cracking from oversize or tramp metalA tougher grade where the feed is uncertain.
- 03Uneven wear across the widthSegments made to drawing so they can be changed one at a time.
02
Choosing the grade
Typical values from the governing standards. A metallurgist confirms the grade for your duty with every quotation.
High-chromium white iron
Abrasive feed of controlled size, with no tramp metal.
ASTM A532 Class II and III · IS 4771 · ISO 21988 / EN 12513
Austenitic manganese steel
Heavy impact from large or uncertain feed.
ASTM A128 · IS 276 · EN 10349
03
What we control
- Grade set by the dutyFeed size, abrasiveness and the risk of tramp metal decide the alloy, not habit.
- Fast quenchManganese parts go from furnace to water in about 45 seconds, so carbides stay in solution.
- Tested every heatChemistry by spectrometer and hardness on every heat; tensile and impact tests as specified.
- Fit where it mattersPin bores, seats and clamping faces machined to drawing.
04
For a quotation, send any of these
- Equipment make and model, or the OEM part number
- Drawing, or the worn part or photographs with key dimensions
- The grade used today and the life it gives
- Quantity per set and sets per year
No drawing? Send the worn part or photographs with key dimensions and we will reverse-engineer it.
Grinding paths
A metallurgist reviews every enquiry and replies with a price, a lead time or the right questions.
Or call +91 145 269 5110
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