Saar Hartmetall: PM- Alloys, Sarastel

Co-hardmaterials alloys are cobald-based alloys whose advantages over steels are their thermal and chemical resistance in a temperature range up to 800°C. Due to a variable share of hard particles it is possible to achieve a tailored wear resistance.

Furthermore the powder metallurgical production process creates a structural homogeneousness which enhances the distribution of hard particles and the isotropy of the structural components.

SARASTEL

The resistance to the oxidation at elevated temperatures and the improved resistance in an aggressive environment as well as the high wear resistance are definite advantages over steels thus opening up sophisticated fields of industrial applications.

In all cases where there is wear in combination with an elevated temperature or/and aggressive agents, the use of Co-hardmaterials alloys may prove to be advantageous:

Hot working and transforming tools for the glass industry, rolling mills and forging shops.
shear blades for hot cutting, milling and cutting tools
protectors in stationary steam turbines
engineering parts
nozzle components for the chemical and petrochemical industry
shafts and bushings for seawater pumps

Alloy	Hardness	Content					Industrial applications
	HRc	C	Cr	W	Mo	Co
Sarastel 1	54	2,5	32	13	/	balance	Milling tools, cutting tools
Sarastel 6	42	1,1	28	4	/		Corrosion resisting high temperature engineering parts, hot working tools
Sarastel 12	45	1,5	30	9	/
Sarastel 21	35	0,3	30	/	5