Products

Waterjet
Cutting Abrasives

Waterjet Cutting Abrasives for Precision Cutting

Waterjet cutting abrasives are at the heart of every abrasive waterjet cutting system. Garnet sand (almandine) is the world's most widely used abrasive additive, offering excellent hardness, fracture toughness and uniform grain shape. For special applications, we also offer olivine sand as a cost-effective alternative. Werner Rumler supplies waterjet cutting abrasives in various standard grades from 12/24 mesh to 200 mesh for different requirements and cut qualities. Whether steel, aluminium, glass, stone or composites – with the right cutting abrasive, you achieve clean cut edges with minimal heat impact. We advise you on the right grain size for your material thickness and cutting speed.

Garnet Sand

Product Information Waterjet Cutting Media

12/24 mesh to 200 mesh

Our garnet sand is a natural almandine garnet – a chemically inert, non-metallic mineral. The garnet sand is recovered and processed as river and beach sand in south-eastern India and is known for its hardness and durability. With these properties, garnet sand is versatilely suited for abrasive applications such as sandblasting, high-pressure waterjet, sweeping of galvanised parts or façade cleaning. Both its high specific gravity as well as its chemical properties and wear resistance make it ideal for use as a filter material.

Standard grain sizes

Mesh	µm
12/24	600 – 1700
20/40	500 – 1000
30/60	200 – 600
80	180 – 350
120	180 – 250
200	75 – 150
Further grain sizes	on request

Chemical composition

CONSTITUENT	SHARE
SiO₂	34 – 36 %
Fe₂O₃	approx. 31 %
Al₂O₃	20 – 25 %
MgO	5 – 7 %
CaO	1 %
MnO	1 %

Product properties

PROPERTY	VALUE
Hardness	Mohs 7.5 – 8
Spec. weight	approx. 3.5 – 4.3 g/cm³
Bulk weight	approx. 1.9 – 2.2 kg/l

Possible blasting systems

Blasting system
Pressure blasting machines
Injector blasting machines
Waterjet cutting machines

Packaging

25 kg bags on pallets (max. 40 bags per pallet), minimum delivery quantity from 1 × 25 kg in a box.
Loose in big bags on pallets on request.

Downloads

Product information garnet sand

Olivine Sand

Product Information Waterjet Cutting Media

GL10 to GL100

Olivine sand is produced from olivine – a naturally occurring mineral consisting of forsterite (Mg₂SiO₄) and fayalite (Fe₂SiO₄). Hardness, grain shape and density make olivine sand an economical alternative to other blasting media such as silica sand and slag. Since olivine sand contains no chloride ions and no corrosive salts, virtually no conductivity arises on the treated surface; renewed rusting after treatment is prevented and a surface is achieved that meets industrial standards. Olivine sand is suitable for various surfaces, e.g. steel, aluminium, stones and masonry (further surface profiles on request). Olivine sand can be used not only as a standard blasting media but also as a high-speed waterjet cutting media. It contains no free crystalline quartz – the use of silica sand is prohibited in several countries due to the risk of silicosis; the use of olivine sand complies with the applicable health and safety regulations. All types are mined, further processed and classified into several fractions according to the strict rules of the manufacturer's ISO 9001 programme. A constant, uniform grain size distribution and chemical composition guarantee repeatable surface properties and cleanliness.

Chemical composition (average values)

wt.-%	GL10	GL30	GL40	GL45	GL50	GL55	GL60	GL65	GL70	GL80	GL100
MgO	46.2	48.8	49.3	49.6	49.6	49.6	49.7	49.6	49.7	49.0	48.9
SiO₂ *	41.6	41.8	41.9	41.8	41.7	41.7	41.6	41.7	41.5	41.6	41.7
Fe₂O₃	6.8	7.6	7.5	7.5	7.4	7.4	7.4	7.4	7.3	7.4	7.4
Cr₂O₃	0.43	0.66	0.44	0.41	0.31	0.31	0.30	0.30	0.30	0.33	0.38
NiO	0.31	0.32	0.32	0.32	0.32	0.32	0.32	0.32	0.32	0.32	0.32

* currently as silicates; contains < 0.1 % free crystalline silica. Values in wt.-%.

Product properties

PROPERTY	VALUE
Colour	greenish grey
Grain shape	angular
Hardness	6.5 – 7.0 Mohs
Spec. weight	3.3 g/cm³
Bulk density (loose)	1.7 g/cm³ (EN 1097-3)

Standard grain sizes (average values)

Sieve [mm]	GL10	GL30	GL40	GL45	GL50	GL55	GL60	GL65	GL70	GL80	GL100
2.00	–	–	–	–	–	–	–	–	–	0.0	0.0
1.40	–	–	–	–	–	–	–	0.0	0.0	5.0	24.4
1.00	–	–	–	–	–	0.0	0.0	0.1	0.1	10.0	47.2
0.710	–	–	–	–	0.0	2.0	3.5	5.0	10.2	17.0	20.5
0.500	–	–	–	0.0	0.1	6.8	11.9	17.0	34.3	26.0	4.5
0.355	–	–	0.0	4.7	6.1	12.9	18.2	23.5	40.7	30.0	1.8
0.250	0.0	0.0	0.3	39.8	50.2	42.2	36.5	30.9	12.0	8.0	0.8
0.180	0.3	0.2	32.5	33.4	33.3	27.3	22.6	17.8	1.8	2.0	0.3
0.125	1.0	31.8	50.7	17.2	8.4	7.1	5.8	4.5	0.5	1.5	0.2
0.090	3.2	43.7	12.6	3.7	1.4	1.3	1.1	0.9	0.2	0.2	0.1
0.063	6.2	17.5	3.4	1.0	0.4	0.3	0.3	0.2	0.1	0.2	0.1
Pan	89.3	6.8	0.5	0.2	0.1	0.1	0.1	0.1	0.1	0.1	0.1

Values = sieve residue in %. "–" = not classified / not relevant. This data sheet does not constitute a specification!

Possible blasting systems

Blasting system
Waterjet cutting machines

Packaging

25 kg bags on pallets (max. 40 bags per pallet), minimum delivery quantity from 1 × 25 kg in a box.
Loose in big bags on pallets on request.

Downloads

Product information olivine sand

Focusing Tubes

Product Information Waterjet Cutting Media

Focusing tubes for various waterjet cutting machine manufacturers — supplied on request. Please specify the machine type and the required inner diameter with your enquiry.

WaterjetCutting Abrasives