Ordinary heat-resistance alloy (martensitic) which
has magnetism and is widely applied to Intake
Valve for internal combustion engine.
JIS SUH36 (21-4N)
High quality heat resistance alloy belonging to
austemtic steel (non-magnetic) that is excellent
in wear and corrosion resistance under high
temperature and applicable to Exhaust Valve for
Heavy Duty Engine use.
Cobalt-bast alloy to be welded on valve face
(Exhaust Valve for Heavy Duty Engine) for the
purpose of specially improving wear and corrosion
resistance under high temperature.