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Forging Weld Materials


Unequalled alloys for the joining, overlay and repair of forge and steel plant equipment and hot-work die steels.


Weld Mold® 525


Higher in alloy than 515 with correspondingly higher physical properties and hardness. Polytrode® 525 displays excellent toughness while maintaining superior machining characteristics. Uses include the repair of forging-hammer bases, sow blocks, bolster plates, columns, die shanks, rams and insert holders.
Rc 25-30
Specification: NA
Available forms: SMAW, FCAW

Weld Mold ® 535


A chrome/nickel/moly/vanadium alloy which has established itself in as the forging industry standard for die-block repair. Good machinability and substantially improved die life makes this alloy the number one choice for the repair and reclamation of hot-work forging dies.
Rc 34-38
Specification: N/A
Available forms: SMAW, FCAW


Weld Mold® 540


For joining, buildup, and repairing cracked or fractured steels, fabricating structures, machinery, assemblies and repair of equipment. Hot work applications include flooding complete impressions on forging dies. Widely used for overlays on dies, punches, inserts and other parts that require this hardness.
Rc 38-42
Specification: N/A
Available forms: SMAW, FCAW

Weld Mold ® 545


A versatile alloy for repair and reclamation of certain hammer and press dies. EDM machining is recommended. Polytrode® H.D. 545 exhibits excellent properties at high temperatures.
Rc 40-45
Specification: N/A
Available forms: SMAW, FCAW


Weld Mold® 5550


An alloy designed to resist abrasion, erosion and alternate heating and cooling cycles without thermal checking, even when coolant spray is employed. Uses include overlays on hot-working extrusion dies, punches and mandrels.
Rc 46-48
Specification: N/A
Available forms: SMAW, FCAW

Weld Mold ® 9650


A medium-carbon chrome/nickel/moly wear-resistant alloy for standard and high-energy forging dies. Deposits shock-resistant, extra-high-performance weld metal that reaches maximum hardness as deposited and is highly resistant to heat-checking, corrosion and
Rc 44-46 as-welded, Rc 38-42 as tempered.
Specification: NA
Available forms: SMAW, FCAW


Weld Mold® 922


For welding flame-hardening AISI 4130 steel. A chrome/moly alloy for buildup or reclamation of dies, forgings and castings and for joining thin sections of 4130 steel when specific properties and chemistry must be maintained. Pre and post heat treatment is recommended.
Specification: AWS- ERNi- 1
Available forms: SMAW, GMAW

Weld Mold ® 923


A chrome/vanadium, flame-hardenable alloy for buildup and repair of AISI 6150 steel with good resistance to abrasion and compression. Primary applications are the repair and reclamation of AISI 6150 forgings, castings and dies.
Rc 42-46 as-welded, flame-hardens to Rc 51-55
Specification: AISI 6150
Available forms: SMAW, FCAW, GTAW, GMAW


Weld Mold ® 925


A carbon/vanadium alloy for welding AISI W-1 through W-5 water-hardening tool steel. A titania-coated electrode or bare rod that provides a fine-grained deposit for the most delicate and exacting work. Used for the repair of cold-working shears, trimmers, punches and dies.
R56-60 as-welded
Specification: AISI W-2
Available forms: SMAW, GTAW, GMAW

Weld Mold® 927


A chrome/moly alloy for buildup or reclamation of AISI 4140 steel dies, forgings and castings and for joining thin sections of 4140 steel when specific properties and chemistry must be maintained. Pre and post heat-treatment is recommended.
Rc 38-40 as-welded, flame-hardens to Rc 50-52
Specification: AISI 4140
Available forms: SMAW, FCAW, GTAW


Weld Mold® 935


For welding AISI 0-1 through 0-6 oil hardening steel. Provides a deposit that is hard as-welded, fine grained and completely heat-treatable. Uses include the repair and reclamation of blanking, forming and trim dies.
Rc 57-60
Specification: AISI 01
Available forms: SMAW, FCAW, GTAW, GMAW

Weld Mold ® 937


For welding AISI A-2 through A-6 air-hardening tool steels and upgrading wear areas on lower alloys. Deposits are hard as-welded, fine grained and completely heat-treatable. Uses include the repair and reclamation of extrusion, blanking, coining and forming dies.
Rc 56-58
Specification: AISI A-2
Available forms: SMAW, FCAW, GTAW, GMAW


Weld Mold® 938


For the welding, repair and reclamation of high-carbon, high-chromium AISI D-2 air-hardening tool steels, preferably in the annealed condition. Uses include the reclamation of blanking, forming and drawing dies. Also for cold-working punches, trimmers and slitting knives.
RC 38-42 as-welded, Rc 58-62 heat-treated
Specification: AISI D-2
Available forms: SMAW, FCAW, GTAW

Weld Mold ® 943


For the repair and reclamation of AISI S-Series shock-resisting tool steels (especially AISI S-7). Particularly suited for cold-working applications and for the composite fabrication of blanking, trimmer, header and brake dies.
Rc 54-57
Specification: AISI S-7
Available forms: SMAW, FCAW, GTAW & GMAW


Weld Mold® 954


A low-carbon chrome/moly/tungsten machinable hot work alloy with very good thermal fatigue resistance. Used to repair or reclaim damaged and worn dies where heat checking due to water cooling is a problem and where machining in the as-welded condition is necessary. This alloy is available in a softer version (Weld Mold® 953) and in a slightly harder and more wear-resistant version (Weld Mold® 954-N). Uses include the repair of upsetter, press, hammer and insert forging dies. Also all AISI H-Series tool steels, where as-welded machinability is required.
Rc 37-40
Specification: N/A
Available forms: SMAW, FCAW, GTAW, GMAW

Weld Mold ® 956


Weld Mold 956 is an enriched version of Weld Mold 954. This is a low carbon, chromium type hot work steel. Weld Mold 956 exhibits excellent machinability, toughness, and thermal shock and wear resistance.
Rc 38-42
Specification: N/A
Available forms: GTAW, GMAW


Weld Mold® 958


For the repair and reclamation of AISI H-12 hot-work tool steel. A chrome/moly/tungsten/vanadium alloy which resists wear, shock, heat checking and erosion at high temperatures. Excellent cold-working properties and uniform heat-treatment response. Water spray coolants should be avoided. This alloy is also available in a titania-coated version for superior re-strike and AC operation as Weld Mold® 957.
Rc 54-57
Specification: AISI H-12
Available forms: SMAW, FCAW, GTAW, GMAW

Weld Mold ® 9580


A superior 5% chrome/tungsten-enriched alloy. Used to upgrade standard AISI H-12 tool steel for extra-tough welds in hot and cold working applications. Excellent for composite tool applications such as hot shear blades, punches and automotive forming or blanking dies and trim sections for material up to 1/4″ thick. This alloy is also available with a titania coating for superior re-strike and AC operation as Weld Mold® 9570.
Rc 55-58
Specification: N/A
Available forms: SMAW, FCAW


Weld Mold® 959


For the repair and reclamation of AISI H-13 hot work tool steel. It is a tungsten-free 5% chrome/moly alloy used on hot-work tool and dies that are subject to heat checking, especially when water-based coolants are used. Uses include the repair and overlay of aluminum, zinc and magnesium die-casting dies, press-forging dies and inserts.
Rc 54-57
Specification: AISI H-13
Available forms: SMAW, FCAW, GTAW & GMAW

Weld Mold ® 960


A tungsten-rich chromium AISI H-21 hot-work tool steel designed to withstand extreme heat, high abrasion and shock. Uses include hot header dies, woodworking router bits and extrusion components.
Rc 56-58
Specification: AISI H-21
Available forms: SMAW


Weld Mold® 964


A highly wear-resistant alloy for hot-work applications such as overlays on aluminum die cast dies and open forging dies used for titanium and other unyielding exotic alloys. Production increases of up to 300% more than original die blocks have been reported. Double tempering is strongly recommended.
Rc 45-50
Specification: N/A
Available forms: SMAW, FCAW

Weld Mold ® 9650


A medium-carbon chrome/nickel/moly wear-resistant alloy for standard and high-energy forging dies. Deposits shock-resistant, extra-high-performance weld metal that reaches maximum hardness as deposited and is highly resistant to heat-checking, corrosion and wear.
Rc 44-46 as-welded, Rc 38-42 as tempered
Specification: N/A
Available forms: SMAW, FCAW


Weld Mold® 966


A high-quality, finely drawn, 8% molybdenum, high speed alloy used for the repair and reclamation of AISI M-1 and M-2 high-speed tool steel. It retains maximum hardness up to operating temperatures of 1,100 Deg. F., along with good wear and abrasion resistance. Typical applications include repair of broaches, drills, and piercing, blanking and trimming dies. Double tempering is strongly recommended.
Rc 60-63 as-welded
Specification: AISI M-2
Available forms: SMAW, FCAW, GTAW, GMAW

Weld Mold ® 9770


A premium alloy for welding maraging 250 and 300 tool steels. As-welded hardness permits machining prior to maraging (age-hardening). Used primarily on high-wear areas of aluminum and zinc die-casting components.
Rc 30-32 as-welded. Rc 48-52 @ 900 Deg. F./3 Hrs
Specification: AISI Marage 250
Available forms: SMAW, GTAW, GMAW


Weld Mold ® 9771


Maraging grade 300. Very similar to Maraging 250 (Weld Mold 9770) however grade 300 will register about three points higher on the Rockwell C scale.
Rc 33-35 as-welded. Rc 51-55 @ 900 Deg. F./3 Hrs
specification: AISI Marage 300
Available forms: GTAW


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