Ductile Iron Castings, Ni-Resist Castings,
Ductile and Gray Iron Castings, Ni-Hard
Castings, ADI, CADI, Compacted Graphite,
Stainless Steel Castings & Custom Alloys

Ductile Iron Castings
(ASTM A-536) All grades

Ni-Resist Castings
(Ductile and Gray Iron Castings)
ASTM A-436, Class D-2 through D-5S

Ni-Resist ductile and gray iron castings offer the performance
properties of stainless steel castings, without the stainless
appearance. Depending on grade, Ni-Resist castings provide
excellent corrosion resistance, mechanical strength, low
thermal expansion and thermal shock resistance. Wellsville
recommends Ni-Resist castings for pumps, valves, pipe
fittings, flanges and marine industry products.

Ni-Resist ductile and gray iron castings are also well-suited
for applications involving sour gas (hydrogen sulfide – H2S),
which can cause sulfide corrosion cracking.

Austempered Ductile Iron Castings /
ADI Castings Grades 1-5

Austempered ductile iron castings (ADI castings) are
manufactured by heat treating ductile cast iron; small
quantities of nickel, copper and molybdenum are added to
enhance hardenability.  ADI castings offer exceptional
strength-to-weight ratios, with excellent fracture resistance
and fatigue strength.  ADI castings density is 10% less
than steel, so they’re an excellent replacement for steel
forgings.  Replacing steel forgings with ADI castings also
saves weight.  ADI castings provide great design flexibility;
they offer a unique combination of noise-damping
properties, high strength, and wear resistance. 

Recently, a Wellsville ADI hammer casting (shown top,
far right) replaced one of manganese steel, while
delivering 50% longer service life.

Wellsville recommends ADI castings for applications
including mining equipment and gears.

Carbidic Austempered Ductile
Iron Castings / CADI Castings

CADI uses a matrix of carbides and ausferrite to add wear
resistance and strength to ductile iron castings.  The result
is longer service life, and higher wear-resistance than
Grade 5 ADI.  Wellsville recommends CADI castings for
many off-highway, construction, agricultural and mining
components, and material handling applications such
as cranes.

Compacted Graphite Castings
(ASTM A-842) Class 250-450

Compacted graphite castings (also known as CG or CGI)
deliver double the tensile strength – and greater toughness
than standard gray irons – They are used in applications
requiring very high performance and durability.  One
well-publicized use for compacted graphite castings is
the clutch assembly for Aston Martin’s flagship V12
Vanquish Coupe. 

Gray Iron Castings
(ASTM A-48) All grades

White Iron / Ni-Hard Castings  
(ASTM A-532) Class 1-A (Ni-Hard) through 1-D (Ni-Hard)

Tool Steel Castings 
(ASTM A-597) A series, D-2, D-5, H series

Cobalt Alloy Castings 

• Stellite® 3,4,6,21
• Haynes®25,188
• UMCo-50®

Corrosion-Resistant and High-Temperature
Stainless Steel Castings 
(ASTM A-743, A-297, A-296, A-351)

Class:

• 300 Series stainless steel castings
• 400 Series stainless steel castings
• WASPALLOY®
• Hastelloy®
• Inconel®
• Monel®
• HC HD HE HF HH
• HI HK HL HN HP
• HT HU HW HX

Wellsville Proprietary Alloys

WD3 – High wear resistance at ambient temperatures
WD3+ – High wear resistance at elevated temperatures

Custom Alloy Development