CBN-A70 – Metal & Electroplating Grade CBN Grit

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Product Overview

CBN-A70 is a golden, blocky monocrystalline CBN grit developed for metal-bond and electroplated abrasive tools requiring high grain toughness and stable particle geometry. Its strong crystal structure provides good resistance to premature grain breakdown, supporting consistent grinding performance on hardened tool steels, high-alloy steels and other difficult-to-machine ferrous materials.

Features

Blocky Monocrystalline Morphology: Provides stable abrasive geometry under sustained grinding loads.
High Crystal Toughness: Helps resist premature grain breakdown in demanding applications.
Good Grain Stability: Supports consistent abrasive exposure and controlled wear.
Metal and Electroplating Compatibility: Suitable for bonded and single-layer tools requiring durable CBN grains.

Specifications

Abrasive Type	Monocrystalline Cubic Boron Nitride
Product Series	Mesh CBN Grit
Grade	CBN-A70
Color Family	Golden / Amber
Grade Direction	Metal Bond / Electroplating Grade
Crystal Morphology	Blocky, well-developed monocrystalline particles
Relative Strength	High
Friability	Low
Selection Focus	Grain toughness, retention and stable abrasive geometry
Typical Bond Systems	Metal Bond / Electroplated Tools

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.