Habonim Catalog Interactive 2024 V04 15022024 - Catalog - Page 137
LTPN technology
The quality of each LTPN batch is approved for hardness profile, thickness, and uniformity of
the hard layer. An effective testing process of the hardened layer has been established, which
includes: cutting a sample, bakelite embedding, grinding and polishing of the metallographic
specimens, and finally a micro-hardness test. Upon request Habonim QA will generate a copy
of the metallurgical test report as part of the complete QA documentation for the product.
Figure 2
Figure 3
1200
Knoop Hardness (25g) [Kg/mm2]
1100
1000
900
800
700
44.73 µm
600
500
400
300
200
10
15
20
25
30
35
40
45
20 µm
50
Distance from surface [um]
Figure 4 - Comparison of wear rates between
untreated 316L, LTPN treated AISI 316L, Cr3C2
spray coat (HVOF), and Stellite 6 overlay
Figure 5 - Hard coating done by HVOF technology
8
7
6
5
4
3
2
1
0
316L
LTPCN
HVOF Cr3C2
Stellite
HIGH TEMP. VALVES
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