Abrasion resistant carbide tool materials

Comparison chart of abrasion-resistant carbide tools

*Standard of the Japan Cemented Carbide Tool Manufacturer’s Association

Cemented carbide usage classifications

Usage classification symbol	Hardness HRA	Transverse rupture strength N/mm2 {kgf/mm2}	Metal component	Rigid phase component
			Co	Rigid phase primarily composed of tungsten
V10	89 or more	1,170 or more {120 or more}	3～6	88～91
V20	88 or more	1,275 or more {130 or more}	5～9	88～90
V30	87 or more	1,471 or more {150 or more}	8～16	78～87
V40	85 or more	1,864 or more {190 or more}	11～20	73～85
V50	83 or more	2,060 or more {210 or more}	14～25	70～82
V60	78 or more	2,256 or more {230 or more}	17～30	65～78

(Japan Cemented Carbide Tool Manufacturer’s Association Standard CIS 019C-1990)

Notes 1. The usage classification symbols and numerical values for V10 to V30 are the same as in JIS B 4053.
2. Usage classification symbols must not be used for material marks.
3. Some cemented carbide manufacturers have multiple material marks for the same usage classification symbol.

Ultrafine-particle cemented carbides

Usage classification symbol	Hardness HRA	Transverse rupture strength N/mm2 {kgf/mm2}
Z01	92 or more	1,177 or more {120 or more}
Z10	91 or more	1,275 or more {130 or more}
Z20	89.5 or more	1,471 or more {150 or more}
Z30	88.5 or more	1,668 or more {170 or more}

（JIS B 4053－1989）

Cemented carbide selection criteria

Product name			Usage classification symbol
Large category	Product name and category		High ← Abrasion resistance → Low Low ← Impact resistance → High
			V10	V20	V30	V40	V50	V60
Punching die	Die	Small loads
		Large loads
	Punch	Small loads
		Large loads
Drawing die	Drawing die	Small loads
		Large loads
	Drawing punch	Small loads
		Large loads
Powder molding die	Die body	Round
		Atypical
	Punch
Other abrasion and impact resistant tools and parts	Low-impact item	Gauge, valve, nozzle, seal ring, precision ball, etc.
	Medium-impact item	Bending die, crusher, spike, etc.
	High-impact item	Letter punch, coining die, coining punch, impact die, swaging die, nail-making tool, hot extrusion die, polishing disk, etc.

(Japan Cemented Carbide Tool Manufacturer’s Association Standard CIS 019C-1990)

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