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Hard-Facing - Iron Base
The Polywear® 300 Series
Polywear® 320 (AC/DC) - A complex carbide in
a tough matrix which offers extreme resistance to
abrasion, oxidation and erosion. It will maintain its
hardness at temperatures over 1,100F, making it an
excellent choice for cintering plants, cement works and
steel-mill blast-furnace bells.
Rc 60-65
Specification: NA
Available forms: E , FC
Polymang® 325 (AC/DC) - A versatile joining,
surfacing and buildup material depositing "Hadfield"-type
manganese steel. Excellent for buffer layers before
depositing hard-facing overlays. Used to join manganese
to manganese and to carbon and stainless steels. Other
uses include impact hammers, crusher rolls, bucket
teeth, railroad frogs and crossovers. Deposits can be
flame-cut but machinability is generally poor.
Non-magnetic.
Rc 35-38 as-welded; work-hardens to Rc 47-50
Specification: AWS-E FeMn-B
Available forms: E , FC
Polywear® 329 (AC/DC) - A
high-carbon/high-chrome/moly alloy for excellent
resistance to abrasion, heat and impact, good hardness
at temperatures over 1,000F and excellent resistance to
oxidation and corrosion up to 1,800F. Uses include
overlay of sand pumps, impellers and bucket teeth/lips.
Rc 56-61
Specification: NA
Available forms: E , FC
Polywear® 331 (AC/DC) - A chrome/nickel/moly
alloy used where resistance to abrasion or impact,
compressive strength and low friction are required.
Multi-layer deposits will cross-check slightly.
Applications include food processing equipment such as
expeller screws and liners, debarking hammers in the
paper industry and components in the mining industry.
Rc 35-39
Specification: NA
Available forms: E , FC
Polywear® 333 - A high-carbon/chrome/moly
alloy with excellent resistance to abrasion and moderate
impact properties. The deposit will uniformly
cross-check and cannot be flame cut. Used for pulverizer
rolls, steel-mill guides, bucket lips and slides.
Rc 58-62
Specification: NA
Available forms: FC
Polywear® 334 - An all-purpose medium-carbon,
medium-chrome hardfacing alloy with good resistance to
abrasion and impact. The deposit can be applied without
cross-checking, depending on the base metal and
procedure. Used primarily on moderate impact and
abrasion applications such as crusher rolls, hammer
mills dredge-pump shells and crusher components.
Rc 50-54
Specification: NA
Available forms: FC
Polywear® 335 (AC/DC) - An economical
hard-facing alloy for resistance to severe abrasion and
light to medium impact. It is a high-silicon,
chrome-steel alloy which can achieve Rc 58 on the first
pass. Uses include dredge parts, earth-moving and farm
equipment.
Rc 58-62
Specification: NA
Available forms: E , FC , TIG , MIG
Polywear® 339 (AC/DC) - A high-strength
chrome/manganese austenitic stainless steel designed as
an excellent universal alloy for buildup and general
repair of manganese and carbon steel components. Used
for joining manganese steel to manganese, mild,
low-alloy and stainless steels. Deposits cannot be
flame-cut, are non-magnetic and machinability is poor.
Applications include railroad frogs and switches,
steel-mill wobblers and couplings, earth-moving
equipment and crushing components
Rc 18-20 as-welded, work-hardens to Rc 45-55
Specification: NA
Available forms: E
Polywear® 350 (AC/DC) - A chrome/nickel/moly
alloy designed to resist galling, seizing, impact and
metal-to-metal wear at high temperatures. Primarily used
as an overlay on steel-mill rolls subject to heat
checking; also for hot shear blades, punches and trim
dies.
Rc 56-58
Specification: NA
Available forms: E , FC
Polywear® 353 (AC/DC) - A high-chromium alloy
that provides the ultimate chromium carbide formations
in an austenitic matrix for resistance to sever abrasion
and moderate impact. The uniformly extruded coating and
special core wire assures low temperature fusion wih
minimum penetration of the base metal. Welds take a high
polish in service and maintain hardness up to 900F. Uses
include hard-facing of muller tires, pug-mill knives,
conveyors and earth-moving equipment.
Rc 57-60
Specification: NA
Available forms: E
Polywear® 354 (AC/DC) - A high-carbon,
chromium alloy with molybdenum and nickel for resistance
to severe abrasion and heavy impact. Low temperature
fusion with minimum penetration of the base metal. Uses
include hard-facing of dipper teeth, crusher jaws,
hammer mills, shot- and sand-blasting equipment.
Rc 52-58
Specification: NA
Available forms: E
Polywear® 356 (AC/DC) - A medium-carbon,
high-chrome alloy with copper, providing outstanding
resistance to hot-impact, erosion and corrosion. Typical
applications are hot friction guides, stripper and
soaking-pit tong bits and skid pipe. Also used for
overlays on copper converter lips.
Rc 33-40
Specification: NA
Available forms: E , FC
Polywear® 357 (DC-RP) - A chromium
carbide/martensitic iron tubular coated electrode for
resistance to fine and wet abrasion under low to
moderate impact service conditions.
Rc 60-64
Specification: AWS-R FeCr-A1
Available forms: E
Polywear® 358 (DC-RP) - Chromium
carbide/austenitic iron, tublular coated electrode. For
hard-facing 11-14% manganese steel.
Rc 55-60
Specification: NA
Available forms: E
Polywear® 359 (DC-RP) - A
chromium-carbide/austenitic iron, tubular, coated
electrode which work-hardens in service. For resistance
to severe impact and moderate abrasion.
Rc 30-36 as-welded, Rc 46-50 work-hardened
Specification: NA
Available forms: E
Polywear® 361 (AC/DC) - A complex carbide
alloy which provides an abrasion resistance equal to or
approaching that of tungsten carbide. Weld deposits
retain hardness and withstand operating temperatures
over 1,100F. Uses include hard-facing of sinter claw
crushers, sieves and cement kilns.
Rc 65-68
Specification: NA
Available forms: E , FC
Polywear® 394 (AC/DC) - The alloying elements
in 394 are designed to resist impact, abrasion,
metal-to-metal wear, thermal shock and oxidation at high
temperatures. Typical applications are automobile
fragmentizer discs and knuckles, tong bits, shear
blades, skid pipe and hot-forming tools. It is
machinable and non-magnetic.
Rc 20-25 as-welded, work-hardens to Rc 40-45
Specification: NA
Available forms: E , FC
Polywear® 420 Mod. (AC/DC) - The standard for
most steel-mill roll reclamation, this modified 420
stainless alloy is designed to resist metal-to-metal
wear, metal pickup, oxidation at high temperatures and
hot abrasion with freedom from cross-checking. Uses
include overlays of blast furnace bells and hoppers,
steel-mill rolls, brake drums and crane wheels. Can be
tempered to lower hardness.
Rc 50-58Rc as-welded
Specification: AWS-E420
Available forms: E , FC
Polywear® 555 (DC-RP) - A semi and fully
automatic surfacing alloy similar in composition to H-12
tool steel for overlay of components subject to
abrasion, impact and high compressive loads. Uses
include overlay of steel-mill rolls, forging dies,
hot-work extrusion tools, mandrels and hydraulic
plungers.
Rc 50-53
Specification: NA
Available forms: E , FC
Polywear® 93A (DC/RP) - A
high-carbon/high-chrome alloy which is resistant to
severe abrasion and moderate corrosion. Typical
applications are grinder rings and rolls for Raymond?
and Hercules? mills; stationary steel-mill guides and
crusher components; overlays of all types.
Rc 60-62
Specification: NA
Available forms: E , FC
Polywear® 997 (DC/RP) - A chrome/nickel/moly
alloy with weld deposits that are hard, tough and free
of cross-checking and porosity. Used primarily in steel
mills for overlays on blast furnace bells and hoppers,
pinch rolls, scale breakers and table rolls.
Rc 50-54
Specification: NA
Available forms: E , FC
Polywear® KK22 (DC/RP) - A columbium-bearing
chrome/nickel/moly/vanadium overlay alloy developed to
resist thermal cracking, corrosion, and wear on
continuous casting machine rolls. A 400% improvement in
roll life has been experienced by steel producers who
have switched from 420 Mod. Stainless steel to KK 22.
Specification: NA
Available forms: E , FC
Polywear® 1304-FC - A high-manganese/vanadium
alloy designed for tough, multi-layer buildup that will
work-harden rapidly with impact. The weld deposit can be
flame cut and is non-magnetic. Used primarily for
reclamation of crusher rolls, impactor hammers and
similar applications where good strength and impact
resistance are needed.
Rc 18-23 as-welded, work-hardens to Rc 45-50
Specification: NA
Available forms: FC
Polywear® 1305-FC - A medium-carbon
chrom/austenitic/manganese steel alloy designed to
provide a tough, ductile layer of work-hardening weld
metal. Uses include the joining of medium- and
high-carbon steels to austenitic manganese steel and as
a buildup prior to overlaying with a more wear-resistant
alloy. Deposits are non-machinable, non-magnetic and can
be flame cut.
Rc 16-20 as-welded, work-hardens to Rc 50-55
Specification: NA
Available forms: FC
Polywear® 1325-FC - A chrome/nickel/moly
alloy designed for applications where a tough,
high-tensile, machinable weld deposit is required.
Excellent for buildups and the joining of heavy
equipment, as in the steel and construction industries.
Similar in properties to Weld Mold? 525. Machinability
is excellent.
Rc 25-30
Specification: NA
Available forms: FC
Polywear® 1335-FC - A companion alloy to
1325, but with higher hardness and physical properties.
Similar in properties to Weld Mold? 535. Machinability
is fair to good.
Rs 35-40
Specification: NA
Available forms: FC
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