Back to White Cast Iron
ML00003 - Apr.2017

Cast iron Engine Valve Seats

The intake valve seat cylinder, manufactured in a high alloy white cast iron, presents a network of primary carbides, not degradated even after high temperature exposition during all lifetime.

1

632
The intake seat cylinder, manufactured in a high alloy , presents a network of , not degradated even after exposition during all lifetime.
M

Material

White Cast Iron
  • ASTM A 532 Class II Type A
Ds

Description

The seats have worked during their lifetime in the same , and the microstructural evolution for the exhaust valve is different from the intake valve due to the higher temperature.

C

Chemistry (% in weight)

Intake Valve Seat

2.51C; 1.00Si; 0.54Mn; 0.034P; 0.021S; 13.7Cr; 0.14Ni.

Exhaust Valve Seat

2.08C; 1.54Si; 0.70Mn; 0.011P; 0.005S; 14.0Cr; 0.14Ni.

Associated Images
The intake valve seat cylinder, manufactured in a high alloy white cast iron, presents a network of primary carbides, not degradated even after high temperature exposition during all lifetime.
632
VIEW
ML00003 / Apr.2017
Cast iron Engine Valve Seats
M - White Cast IronP - Valve SeatAp - MaritimeCd - Microstructural Evolution
Cm - Micrography by OMDf - Network of Primary Carbides
The intake valve seat cylinder, manufactured in a high alloy white cast iron, presents a network of primary carbides, not degradated even after high temperature exposition during all lifetime.
206
VIEW
ML00003 / Apr.2017
Cast iron Engine Valve Seats
M - White Cast IronP - Valve SeatAp - MaritimeCd - Microstructural Evolution
Cm - Micrography by OMDf - Network of Primary Carbides
The exhaust valve seat cylinder, manufactured in a high alloy white cast iron, presents a coalesced structure, degradated by high temperature exposition during the lifetime.
182
VIEW
ML00003 / Apr.2017
Cast iron Engine Valve Seats
M - White Cast IronP - Valve SeatAp - MaritimeCd - Microstructural Evolution
Cm - Micrography by OMDf - Coalesced structure
The exhaust valve seat cylinder, manufactured in a high alloy white cast iron, presents a coalesced structure, degradated by high temperature exposition during the lifetime.
137
VIEW
ML00003 / Apr.2017
Cast iron Engine Valve Seats
M - White Cast IronP - Valve SeatAp - MaritimeCd - Microstructural Evolution
Cm - Micrography by OMDf - Coalesced structure