Nimonic (high nickel alloy - 1%Fe; 0.5%C; 15%Cr, 15%Al, 15% Co, 4%Mo, 1%Ti, remaining Nickel. {FeC,CrAlCo,MoTi}
Stellite- 50% Co, 20%Cr, 18%Mo, 10% Tin, 2%C. {C,CoCroMoTin}
Cast nikallium Cu80.2,Al9.3,Fe5,Ni4.3,Mn1.2
Brass
Admiralty brass cu ; zn 29; tin 1
Naval brass cu; zn 39; tin 1
Brazing brass cu 50; zn50
BRONZE copper tin5
Phosphor bronze Cu,Tin4,phosp1
Muntz metal Cu60 zn40
Stainless steel C0.12; cr 18; ni8 ; Fr
Monel metal Ni60,Cu38,Al2
Cast steel fe+ C0.2,Mn0.7,Si0.32,S0.015,ph0.01
SHIP HULL MILD STEEL
STERN FRAME cast steel
Stern tube spheroidal CI.
LINER
A compacted vermicular graphite CI incorporate a type of graphite which falls between lamellar and spheroidal.
It had good mech prop close to that of spheroidal graphite CI; Good thermal stability and anti wear prop as that of lamellar graphite CI; good castability.
MAN B&W uses Tarkalloy C grey CI which is a lamellar graphitic CI with small proportions of Boron and Phosphorus.
PISTON CROWN
Heat resistant chrome molybdenum steel for crown with chrome plated grooves
PISTON SKIRT
Nodular CI bronze sliding bands for large bite engines.
PISTON RINGS
Pearlitic Grey CI with chrome plating or plasma coating (very hard material Cr/Mo fused to rubbing surface).
CPR ring is vermicular grey CI.
Both have cermet coating(is a ceramic metal 50% chrome carbides in a matrix of Ni-Cr with some molybdenum) and Alu-bronze coating on the running surface and bottom is chrome coated.
PISTON ROD
Forged steel
CYLINDER COVER
Alloy steel
EXHAUST VALVE
Valve is made up of Austentic alloy steel and have a sintered layer of Inconel or Nimonic on the underside of the valve. It's spindle is molybdenum chrome alloy steel.
Alternatively, whole valve and spindle is forged nimonic
Chrome plated stem had wear problems.. so HVOF based cermet coating s being used.
EXHAUST VALVE SEAT
Molybdenum steel with stellite welded onto the seating surface.
EXHAUST VALVE SPINDLE GUIDE
Grey CI
EXHAUST VALVE HOUSING
Cast Iron
CLEANING PISTON RING
Steel
FUEL VV
body case hardened steel
Vv high speed steel
TIE ROD/FOUNDATION BOLTS/chain n it's tightener - high tensile steel
Chain - nickel chrome or.moly steel
TURBOCHARGER
TURBINE CASING cast iron
Nozzle ring,wheel,shaft,blades- Nimonic
Compressor side impeller,volute casing,diffuser,inducer - aluminium alloy
BEDPLATE
For small bore- casted CI
For large bore cast steel transverse girder welded to fabricated steel longitudinal girder
The fabricated long girder is formed from several steel sections, steel casting and steel plates. The steel is <0.23%C low carbon steel
CRANKSHAFT
Forged 0.4% carbon steel(500-550MN/sq.mtr) with Nitralloy cr-1.5%, al- 1%, mo-0.2%.
Fillets(5% of journal dia) are cold rolled/strain hardened at 220BHN and running surface flame/induction hardened to abt 480BHN.
BOILER
Drum 0.28% low Carbon steel, 0.5% mn, 0.1% silicon
Tube plain carbon steel.
Gauge glass special toughened glass containing silicon oxide or manganese oxide
BOILER TUBE - low carbon alloy steel containing cr,Ni,mo. Or solid drawn mild steel
Mild steel plug.
SAFETY VALVE seat,vv,spindle,bushes n compression screws must be stainless steel or monel metal. VALVE CHEST is cast steel.
GENERATOR
CON ROD forged steel i.e plain carbon steel
Nickel steel with 3% Ni
MAIN AIR COMPRESSOR
Valve seat 0.4% carbon steel
Spring hardened steel
Valve nickel steel, stainless steel, chrome vanadium steel.
Bursting disc copper alloy or Phosphor bronze.
Fusible plug of air reservoir eutectic alloy
STEERI G GEAR
Rotary and fixed vane- spheroidal CI
Stator s made up of cast steel
High tensile steel bolts
Rudder carrier bearing is meehanite with gunmetal thrust ring n bush
Grease used is wtr resistant calcium soap base with graphite.
MAIN AIR COMPRESSOR
BODY close grained casting of Iron or steel
Valve high grade steel
Valve seat stainless steel
Heat exchanger tubes n tube plate cupro nickel.
Fusible plug copper alloy/ phosphor bronze at 121
CRANKCASE RELIEF VALVE
Valve disc Aluminium alloy
REFR
Liner CI
Piston Al alloy
Rings plain CI.
Seal - steel n carbon; or ceramic n carbon
CO2 BOTTLE
bottle solid drawn seamless manganese steel
Pipeline - solid drawn MS galvanised
Cable - Phosphor bronze
Seal/ bursting disc 0.3mm phosp bronze
Siphon tube copper
SHIP SIDE VV body - ni-al bronze / cast steel
Stem/seat/disc monel metal or cupro nickel
STERN TUBE
S/T spheroidal CI
SEAL bushes bronze
S/frame cast steel.
PROPELLER
Ni-Al bronze
Manganese bronze
FPP Cast nikallium.
RUDDER
Rudder stock forged steel
GEAR PP
Rotors n shafts - integrally forged of Nitralloy steel
Gears - case hardened, med carbon steel
Casing n brg housing close grained grey CI
CENTRIFUGAL PUMP
FW pp casing CI; impeller bronze; shaft ss EN57
SW pp: casing gunmetal; impeller Al-br; shaft ss EN57
Blr feed pp casing cast steel; shaft n impeller ss EN58
SCREW PUMP
casing n brg housing CI
Screw shaft ss or high grade carbon steel
Sea water pipe galvanised iron with epoxy coating.
WINDLASS
BRAKE LINIMG MATERIAL FERRODS.
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