Tips Soldadura Fundicion

Welding of Cast Iron
Welding-cast-iron deals with classes known as Gray, Malleable and Nodular (or Ductile) according to typical appearance of their microstructure, which affects their properties.
Cast irons are alloys of iron, carbon and silicon (may have over 2% carbon and 1-3% silicon), and which may include specific amounts of other elements to achieve definite characteristics.
AcceptedASTM Specifications on Cast Iron are listed hereafter:
ASTM A47/A47M-99(2004)
Standard Specification for Ferritic Malleable Iron Castings .
ASTM A48/A48M-03
Standard Specification for Gray Iron Castings
ASTM A74-06
Standard Specification for Cast Iron Soil Pipe and Fittings

ASTM A126-04
Standard Specification for Gray Iron Castings for Valves, Flanges, and Pipe Fittings.
ASTMA159-83(2006)
Standard Specification for Automotive Gray Iron Castings

ASTM A247-06
Standard Test Method for Evaluating the Microstructure of Graphite in Iron Castings .
ASTM A278/A278M-01(2006)
Standard Specification for Gray Iron Castings for Pressure-Containing Parts for Temperatures Up to 650 degrees F (350 degrees C).
ASTM A319-71(2006)
Standard Specification for Gray Iron Castings forElevated Temperatures for Non-Pressure Containing Parts
ASTM A327-91(2006)
Standard Test Methods for Impact Testing of Cast Irons

ASTM A 339 - Discontinued
ASTM A395/A395M-99(2004)
Standard Specification for Ferritic Ductile Iron Pressure-Retaining Castings for Use at Elevated Temperatures
A 396 - Discontinued
ASTM A436-84(2006)
Standard Specification for Austenitic Gray IronCastings AS
ASTM A438 - Withdrawn
ASTM A439-83(2004)
Standard Specification for Austenitic Ductile Iron Castings

ASTM A476/A476M-00(2005)
Standard Specification for Ductile Iron Castings for Paper Mill Dryer Rolls.
ASTM A518/A518M-99(2003)
Standard Specification for Corrosion-Resistant High-Silicon Iron Castings .
ASTM A532/A532M-93a(2003)
Standard Specification for Abrasion-ResistantCast Irons .
ASTM A536-84(2004)
Standard Specification for Ductile Iron Castings
ASTM A571/A571M-01(2006)
Standard Specification for Austenitic Ductile Iron Castings for Pressure-Containing Parts Suitable for Low-Temperature Service
ASTM A602-94(2004)
Standard Specification for Automotive Malleable Iron Castings
ASTM A608/A608M-06
Standard Specification for Centrifugally CastIron-Chromium-Nickel High-Alloy Tubing for Pressure Application at High Temperature .
ASTM A644-05
Standard Terminology Relating to Iron Castings .
ASTM A667/A667M-87(2003)
Standard Specification for Centrifugally Cast Dual Metal (Gray and White Cast Iron) Cylinders
ASTM A748/A748M-87(2003)
Standard Specification for Statically Cast Chilled White Iron-Gray Iron Dual Metal Rolls for PressureVessel Use .
ASTM A823-99(2003)
Standard Specification for Statically Cast Permanent Mold Gray Iron Castings .
ASTM A834-95(2001)
Standard Specification for Common Requirements for Iron Castings for General Industrial Use .
ASTM A842-85(2004)
Standard Specification for Compacted Graphite Iron Castings .
ASTM A874/A874M-98(2004)
Standard Specification for Ferritic Ductile Iron CastingsSuitable for Low-Temperature Service .
ASTM A888-07a
Standard Specification for Hubless Cast Iron Soil Pipe and Fittings for Sanitary and Storm Drain, Waste, and Vent Piping Applications.
ASTM A897/A897M-06
Standard Specification for Austempered Ductile Iron Castings.
ASTM A942-95(2001)
Standard Specification for Centrifugally Cast White Iron/Gray Iron Dual Metal Abrasion- Resistant RollShells.
The properties sought for when selecting cast iron are usually economy, good castability even in complex forms, damping of vibrations, resistance to heat checking or heat shock, although strength may not be the primary consideration.
Common applications examples are housings, enclosures, machine frames and bases, pipe fittings, clutch plates, brake drums, counterweights etc.
Cast iron...