Blasting
- Excellent quality at sharp prices
- More than 1.000 tons of abrasives on stock in Holland
- Own production steel shot and grit
Steel grit
High Carbon Steel Shot & Grit
Airblast-Abrasives B.V. has its own production line for high quality steelgrit with an excellent durability. In our warehouse in Holland we keep a stock of more than 750 tons of steel shot and steel grit.
Steel grit is a very cost economic blasting media in shot blasting machines and blast rooms, because it can be recycled many times. There are three different hardness’, steel grit GP, steel grit GL and steel grit GH.
Steel grit blasting in surface preparation is used for cleaning rust, old coating layers and creating an anchor profile for the coating system to adhere. Steel grit blasting media are also used to remove mill scale and in the foundry industry for removal of the sand from the work pieces.
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Contact information
Airblast-Abrasives B.V.
Kelvinstraat 8
1704 RS Heerhugowaard
The Netherlands
Do you have questions about how we can help your company? Send us an email and we’ll get in touch shortly.
- More than 50 years of experience
- Airblast offices in 12 countries
Grain sizes
| Product | Size range |
| Steel grit GH12 / Steel grit GL12 / Steel grit GP12 | 1,70 – 2,40 mm |
| Steel grit GH14 / Steel grit GL14 / Steel grit GP14 | 1,40 – 2,00 mm |
| Steel grit GH16 / Steel grit GL16 / Steel grit GP16 | 1,00 – 1,70 mm |
| Steel grit GH18 / Steel grit GL18 / Steel grit GP18 | 0,70 – 1,40 mm |
| Steel grit GH25 / Steel grit GL25 / Steel grit GP25 | 0,40 – 1,20 mm |
| Steel grit GH40 / Steel grit GL40 / Steel grit GP40 | 0,30 – 1,00 mm |
| Steel grit GH50 / Steel grit GL50 / Steel grit GP50 | 0,20 – 0,70 mm |
| Steel grit GH80 / Steel grit GL80 / Steel grit GP80 | 0,10 – 0,40 mm |
| Steel grit GH120 / Steel grit GL120 / Steel grit GP120 | 0,10 – 0,30 mm |
Specifications
| Chemical composition | (C): 0.80 – 1.20% | (Mn): 0.60 – 1.20% | (Si): ≥ 0.40 | (S): ≤ 0.05% | (P): ≤ 0.05% |
| Hardness | GP: 42 – 52HRC, GL: 53 – 60HRC, GH: 60 – 64HRC | ||||
| Hardness deviation | Max. deviation ±3.0 HRC | ||||
| Microstructure | Tempered martensite or sorbite | ||||
| Density | 7.6 g/cm³ | ||||
| Bulk density | 4.2 g/cm³ | ||||
Application
| Steel Grit | Application |
| G10/SG2.5 G12/SG2.0 | Sand removal of large sized castings, scale removal of large sized products from forging, stamping, dieforging, drawing and rolling or after heat treatment (e.g. pipes, sections, plates, fittings, wire). |
| G16/SG1.4 G14/SG1.7 | Sand removal of large and medium sized castings, scale removal of forging and heat-treated work pieces, surface blast cleaning of steel plates, sections and steel structures, shot peening of work pieces, cutting of granite. |
| G18/SG1.2 G25/SG1.0 | Sand removal of medium and small sized castings, surface blast cleaning of forgings, heat-treated pieces, steel pipes, sections and steel structures, surface treatment before painting, shot peening of work pieces. |
| G25/SG1.0 G40/SG0.7 | Surface blast cleaning of small sized castings, forgings and heat-treated pieces, aluminium and copper alloy castings, steel plates, steel pipes, sections and steel structures, shot peening of work pieces. |
| G50/SG0.4 G80/SG0.3 G120/SG0.2 | Surface blast cleaning of stainless steel plates, thin steel plates, non ferrous alloys, dacromet coat. |
Steel grit Applications
The most cost efficient blasting media in a closed system, where recycling is possible. Due to long extremely long life time, savings are made on abrasive cost itself, but also on disposal costs.
Blast rooms
In blast rooms mainly our steel grit GH is used. This is the hardest and most aggressive steel grit available (60-64 HRC). Because compressed air and personal are expensive, it is favorable to use the steel grit GH, because it has the quickest cleaning action.
In blast rooms the steel grit is used to remove old coatings, rust and mill scale. Steel grit is ideal for surface preparion and creating and anchor profile prior to coating, metalisation or powder coating. Our steel grit GH25, GH40, GH50 and GH80 are very often used in blast rooms. In case a very deep anchor profile is required of Rz > 120 um, the steel grit GH18 and GH16 can be considered.
Wheel Blast Machines
In shot blasting machines, mainly the softest steel grit GP is used (42-52 HRC). Steel grit GP is also referred to as angular shot, because it starts of angular but becomes round after some cycles in the wheel blast machine. When a more angular surface profile is required, steel grit GL (53-60 HRC) can also be used, for example when metallization follows after the blasting process. Not every wheel blast machine is suitable to work with the more aggressive GL hardness. Steel grit GH may never be used in wheel blast machines, because it will be brutal on the wear parts and inside of the machine.
In wheel blast machines steel grit is used for the removal of mill scale, rust, old coating layers on steel plates, steel beams and small steel parts. Steel grit is also used for deburring of metal parts and in the foundry industry the steel grit GP can be used for desanding of the foundry parts. Larger parts require a larger size abrasive.
Sometimes steel grit GP is added to work mix of shot to get some extra profile and aggressiveness to the blasting process.
Blast Cabinets
In pressure blast cabinets steel grit of GH hardness can be used, normally a finer grain size. Vacuum injection blast cabinets are not suitable, because the specific weight of steel grit is too high for this blasting method.
Vacuum Blasting Machines
In strong vacuum blasting machines like the AB1070, steel grit GH can be used. Normally the grain size GH40 or GH25 is suitable for this application.
