Nohab Polar SF18VS Valve Spindle:
1. Material:
Nimonic 80A(NiCr20TiAl ) .
(comply with European Standard EN10090: 1998 Valve Steels and Alloys for Internal Combustion Engines)
2. Upset forging and die pressing for grain flow along head profile.
3. Close controlled heat treatment for achieving proper mechanical properties and metallurgical structure.
4. Stress released completely.
5. Supersonic detection for welded point at stem, dye penetrant inspection for entire valve.
6. LR, BV, CCS Certificate depends on needs.
7. Proven Reliability by European customers.