STANDARD ALLOYS INDIAAustenitic manganese steel
Heavy impact from large rock.
ASTM A128 · IS 276 · EN 10349
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Grizzly bars
Grizzly bars let the fines bypass the crusher and carry the rock to it. They take impact from falling rock and abrasion from everything that slides across them.
- Works in
- Vibrating grizzly feeders and scalping screens ahead of primary crushers.
- Industries
- Mining, Aggregate, Cement
- Materials
- Manganese steel, Cr-Mo 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 and rounding of the top faceA harder grade where the impact allows it.
- 02Bending or breakage under falling rockA tough grade, with a section designed for the drop.
- 03Gaps opening between barsSpacing and fixing faces held to drawing.
02
Choosing the grade
Typical values from the governing standards. A metallurgist confirms the grade for your duty with every quotation.
Cr-Mo and martensitic steels
Abrasive feed with moderate impact.
IS 4896 · Customer specification
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.
Grizzly bars
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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