Steel-Bonded Carbide

Cermet is a structural material composed of a ceramic (hard) phase and a metal (or alloy) binder phase. Ceramic phases generally refer to high melting point oxides (such as alumina, beryllia, magnesia, zirconia, etc.) and refractory compounds (such as titanium carbide, tungsten carbide, tantalum carbide, boron carbide, zirconium diboride, titanium diboride and tantalum diboride, etc.). The metal phase is mainly transition elements (iron, cobalt, nickel, chromium, molybdenum, tungsten, vanadium, niobium, tantalum, etc.) or their alloys. Cermet not only has the advantages of toughness, high thermal conductivity and good thermal stability of metal, but also has the characteristics of high temperature resistance, corrosion resistance and wear resistance of ceramics.

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ADVANTAGES

Cermet (steel-bonded cemented carbide) is a composite material produced by powder metallurgy sintering and forging with steel as the binder phase and carbide (mainly titanium carbide and tungsten carbide) as the hard phase. It has the following characteristics: good process performance, machinability and heat treatability. In the annealed state, ordinary cutting equipment and tools can be used to carry out mechanical processing such as turning, milling, planing, grinding, and drilling. It can also be forged and welded. Compared with cemented carbide, it has lower cost and wider application range. Good physical and mechanical properties. Steel-bonded cemented carbide has high hardness in the hardened state. Because it contains a large amount of dispersed high-hardness hard phase, its wear resistance can be close to that of high-cobalt cemented carbide. Compared with high-alloy die steel, it has higher elastic modulus, wear resistance, compressive strength and bending strength. Compared with cemented carbide, it has better toughness. It has good self-lubrication, low friction coefficient and excellent chemical stability.

SPECIFICATIONS

GRADE OF CERMET (STEEL-BONDED CARBIDE)

Grade	Hard Phase	Binder Phase	Density	Hardness		TRS	Impact toughness
			g/cm³	Annealing	Hardening	Mpa	J/cm²
				HRC	HRA
GT35	TiC	Alloy steel	6.40～6.60	≤48	≥86	≥1400	≥3.5
R5	TiC	Alloy steel	6.30～6.50	≤48	≥86	≥1200	≥3.0
TM52	TiC	Alloy steel	6.10～6.30	sintered state:HRC≥60		≥1500	H2O toughing treatment ≧6.0
TM60	TiC	Alloy steel	6.30～6.50	sintered state:HRC≥56		≥1500
GB10	TiC	Alloy steel	5.80～6.20	sintered state:HRC≥65		≥1500
GW1	WC	Alloy steel	10.45～10.65	≤48	≥83	≥1650	Unforged≥6
GW1	WC	Alloy steel	10.45～10.65	≤48	≥83	≥1650	Forged≥8
TLMW50	WC	Alloy steel	10.21-10.37	35-40	66-68	≥2000	≥8
GW50	WC	Alloy steel	10.30-10.35	41-44	67-71	1870	6.5
GJW50	WC	Alloy steel	≥10.20	35-38	68-71	2070-5260	8.5
GW40	WC	Alloy steel	9.7-10.0	34-40	68-70	2400-2600	≥20
DT	WC	Alloy steel	9.75-9.90	32-38	62-65	2500-3600	15-25