CBN-A90 – High-Integrity CBN Grit

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Product Overview

CBN-A90 is a high-integrity monocrystalline CBN grit developed for metal-bond and electroplated tools requiring strong grains and stable particle geometry. Its regular, well-developed crystal morphology provides good resistance to abrasive wear and helps maintain consistent cutting action when grinding hardened steels and other demanding ferrous materials.

Features

Regular Monocrystalline Morphology: Provides stable grain geometry and predictable abrasive behavior.
High Crystal Strength: Helps resist premature grain breakdown under sustained grinding loads.
Good Wear Stability: Supports consistent cutting performance and useful abrasive life.
Metal and Electroplating Compatibility: Suitable for tools requiring durable grains and stable abrasive exposure.

Specifications

Abrasive Type	Monocrystalline Cubic Boron Nitride
Product Series	Mesh CBN Grit
Grade	CBN-A80
Color Family	Brown-Black / Dark Amber
Grade Direction	High-Strength / Multi-Bond Grade
Crystal Morphology	Irregular and angular monocrystalline particles
Relative Strength	High
Friability	Controlled
Selection Focus	High grain strength, sharpness and sustained cutting efficiency
Typical Bond Systems	Resin / Vitrified / Metal Bond

Comparison Table of Monocrystalline CBN Grit Size

US Mesh Size	GB/T 6406-2016 / ISO 6106	FEPA CBN Designation	Nominal Size Range (μm)
70/80	213	B213	212–180
80/100	181	B181	180–150
100/120	151	B151	150–125
120/140	126	B126	125–106
140/170	107	B107	106–90
170/200	91	B91	90–75
200/230	76	B76	75–63
230/270	64	B64	63–53
270/325	54	B54	53–45
325/400	46	B46	45–38
400/500	39	B39	38–32
500/600	33	B33	32–26

Particle size designations are provided according to commonly used superabrasive grit standards. Product-specific size availability should be confirmed according to the selected CBN grade.