Cast Steel Grit

Name: China Cast Steel Grit Manufacturers Suppliers - Wholesale Cast Steel Grit Made in China
Brand: Promisteel
SKU: 311109434

NAME: High Carbon Cast Steel Grit
BRAND: PROMISTEEL
MATERIAL: High-carbon cast steel
SHAPE: Crushed, angular metallic abrasive
SIZES: Common supplied range: G10–G120
HARDNESS GRADES: GP / GL / GH, selected against the confirmed process
REFERENCE: SAE J444 size classification; SAE J1993 cast steel grit reference
APPLICATION: Heavy descaling, casting sand removal, and profile development
PACKAGING: Steel drums, bulk bags or palletized export packs as confirmed

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Product Introduction

Angular cutting action for descaling and profile creation

Cast steel grit is produced by crushing high-carbon cast steel shot to create angular particles. Its edges cut into compact scale and contamination, making it suitable for heavier cleaning work and for developing the anchor profile required by coating systems.

As a steel grit media, it is selected around contamination level, workpiece geometry, blast method, target profile and the required balance between cutting speed and abrasive life. Sandblasting steel grit can be effective in air-blast work as well, but the grade must suit the equipment and recovery system. Confirm the selected crushed steel shot grade through a controlled line trial.

GP, GL and GH are commonly used steel-grit hardness labels, but their exact ranges can differ between suppliers. Confirm the agreed HRC range and certificate requirement; do not select by the letters alone.

Technical specifications

Reference properties to agree before supply
Parameter	Reference	Selection note
Material	High-carbon cast steel	Crushed to an angular form for stronger cutting action.
Size range	G10–G120	Confirm the grade against workpiece condition and target profile.
Hardness grade	GP / GL / GH or an agreed HRC range	Use the agreed hardness range, not the label alone, in the purchase specification.
Particle condition	Angular / half-round working mix as agreed	Particle form changes during reuse and affects profile, cleaning action and fines generation.
Density	≥ 7.0 g/cm³	Confirm the test method where density is a release criterion.
Certificate	COA, TDS or SDS as agreed	State the test values and traceability required for the ordered lot.

Values shown are industrial reference points for quotation and selection. Final acceptance must follow the confirmed product specification and customer process requirement.

Size guide

Coarse sizes	General cleaning sizes	Fine profiling sizes
G10 / G12 / G14 / G16	G18 / G25 / G40 / G50	G80 / G120
For heavier scale and larger workpieces where cutting action is the priority.	Common starting range for descaling, cylinder work and coating preparation.	For finer work and controlled surface-profile development.

The size labels above are not a final application recommendation. Validate the grade through a stable line trial, including media top-up, separator condition and the achieved surface result.

Hardness-grade selection

Choose the cutting behaviour, then verify it on the line

General-purpose grit

A lower or medium hardness range is often chosen for general cleaning where durability and a progressively rounded working mix are useful. It can be a practical first option, but it is not automatically the best option for every coating profile.

Higher-hardness grit

A higher hardness range is commonly considered where stronger cutting action, removal of compact scale or more persistent angularity is needed. It can also change breakdown, dust and recovery behaviour, so confirm it with the actual separator and workpiece.

Quality plan

What to verify for stable profile development
For coating preparation, the useful question is not only whether the grit removes scale. It is whether it holds a controllable working mix and repeatedly reaches the required cleanliness and anchor profile.

Inspection item	Why it matters
Screen size distribution	Controls the contact pattern and helps maintain the selected cleaning and profile range.
Hardness distribution	Influences cutting behaviour, angularity retention, breakdown rate and abrasive life.
Particle morphology	Angular and half-round proportions evolve in service; agree the incoming condition and review the working mix during trials.
Density and internal condition	Support consistent impact energy and can affect early breakdown; agree the method and limit if specified.
Certificate and traceability	Connect the delivered lot to the agreed tests, acceptance criteria and packing identification.

Agree the inspection item, test method, acceptance limit and certificate format with the buyer. A generic grit data sheet cannot replace an approved coating-preparation procedure.

Machine and process fit

Where cast steel grit is commonly used

Heavy Scale & Castings

Remove compact scale and casting sand where an angular cutting action is required before the next manufacturing stage.

Cylinder Internal Cleaning

Prepare internal surfaces before inspection or coating, with the grade selected around equipment access and the required surface condition.

Coating Preparation

Develop an anchor profile before paint or epoxy application. Match the final profile to the coating supplier's requirement.

Quality and trial support

Measure cleaning result and operating stability

Very low-priced steel grit media can raise the real operating cost through fines, top-up rate, dust, separator load and downtime. Compare cost per accepted cleaned area or part, not only FOB price per ton.

Keep blast pressure or wheel settings, workpiece mix and separator settings stable during the trial.
Record media top-up in kg/hour, accepted output and collected fines.
Check achieved cleanliness, surface profile, machine load and separator condition.
Request the applicable COA, TDS or SDS for the confirmed grade or batch.

FAQ

Q: Which hardness grade should I choose?

A: First define the contamination, equipment, target surface, desired cleaning rate and intended operating life. Then specify an agreed HRC range and validate the grade through a stable line trial; GP, GL and GH labels alone are insufficient.

Q: Will steel grit keep the same sharpness throughout use?

A: No. The working mix changes as media is reused. Monitor the size distribution, fines and particle form with the separator condition so that profile and cleaning results remain controlled.

Q: What information is needed for coating-preparation selection?

A: Share the steel condition, required cleanliness grade, coating system and target profile, blast method, recovery system, current media, production rate and acceptance method.

Q: Can I receive a sample and batch documents?

A: A 1–5 kg evaluation sample may be arranged for qualified projects. The applicable COA, TDS or SDS is supplied according to the confirmed product and batch.