FamilyEx. AlloysBenefits and ApplicationsLimitationsMachinabilityWeldabilityCorrosion Resistance
Aluminum BronzeC95200, C95500Higher strength and corrosion resistance than other bronzes and copper alloys. Resistant to seawater corrosion. Non-sparking.Vulnerable to impingement attack by abrasive substances (cavitation erosion), filtration sometimes necessary in high speed pumpsFairGoodGreat in seawater applications and many acids. Resistant to stress corrosion cracking and fatigue.
Anti-GallingWM88, WM23Bi, WM126, WM54CHigh resistance to galling in metal to metal contact where lubricants cannot be used. Common in the food industry for pump parts, especially rotors in contact with stainless steels. Usable with many chemicals, cleaners, and acidic foods.Generally non-weldable, other than nitronic 60. Only usable up to 500F other than WM54C.Moderate, comparable to 304 stainless steelNon-weldableGood, depends on the alloy
Austempered Ductile IronADI Gr 2 and 3High strength and abrasion resistant, competitive with steel, and less dense. Common in automotive, agriculture, construction, and mining.Unique heat treatment is required that can cause machining issues. Some shapes difficult to cast. Non-weldable.Fair to lowNon-weldableLow
Austenitic Stainless SteelCF8 (304), CF8M (316)Useable at a wide range of temperatures, non magneticNon-hardenable by heat treatment, susceptible to stress corrosion crackingModerateVery good, post-weld heat treatment sometimes required to restore corrosion resistance (unless using an ELC grade)Good in most environments depending on the grade.
Carbon and Low Alloy Steels8620, 4130, WCB, C5, C12Wide range of mechanical properties for an economic price. Adaptable to many requirements through different grades and heat treatments.Susceptible to corrosionFair to goodFair to goodLow
Carbon-Manganese SteelLCC, WCCAbility to handle high shock loading such as those seen in railroad applicationsSusceptible to corrosionFair to lowFair to goodLow
Cast IronDuctile and GrayGray iron has good wear resistance, ductile iron can be comparable to some steels, both are very economic in cost.Both are non-weldable. Gray is brittle.GoodFair, precaution must be taken in filler metal and techniqueLow
Cast Iron (White)HC250Good wear resistance (or high hardness) and some corrosion resistance. Used in applications that do not require impact strength.Very crack prone and non-weldable. Brittle and low impact strength.Fair, usually machined in the softened or annealed stateNon-weldableFair
Chromium Nickel Alloy50 Cr-50 Ni-Cb (50 / 50)Highly corrosion resistant at high temperatures. Mainly used in petrochemical furnaces.Susceptible to cold shut or misrun in the casting process, difficult to weld and straightenFair to lowLowExcellent
Controlled Thermal Expansion AlloysInvar, KovarMainly used as tooling for composites in aerospace. Almost no dimensional changes over normal atmospheric temperatures, low coefficient of thermal expansion between crogenic temperatures and 500F (high dimensional stability).Susceptible to cold shut or misrun in the casting processGoodGoodFair
Corrosion Resistant Copper AlloyWM3, CupronickelResistant to seawater corrosion, commonly used in desalination applications. High ductility.Susceptible to corrosion in the presence of sulfides or ammoniaFairNon-weldableGreat in seawater applications and many acids. Resistant to stress corrosion cracking and crevice corrosion.
Duplex Stainless SteelCD4MCuNHigh strength (~2x austenitic), resistant to erosion and corrosion (better than austenitic), lower nickel and molybdenum content than austenitic without sacrificing corrosion resistance. Less material is generally needed using this alloy for the same performance as austenitic stainless.Low impact toughness at low temperatures. Decreased performance at higher temperatures.GoodGood to moderate. Post-weld heat treatment required.Great
Ferritic Stainless SteelCB-30Resistant to stress corrosion cracking (chlorides).Not as formable or weldable as austenitic stainless. Decreased performance at lower temperatures.Fair to lowFairGood in environments with chlorides
Heat Resistant Stainless SteelsHK40, HTHigh strength and corrosion resistance at temperatures above 1200F. Resistant to thermal fatigue and shock that comes from repeated temperature change. Mainly used in petrochemical furnaces and oil refineries.Cannot be hardenedFairModerate. Some grades prone to HAZ cracking.Excellent in a wide range of temperatures
Manganese Bronze (High Str Yellow Brass)C86300, C86500High strength, wear resistance, and corrosion resistance.Low machinabilityFairModerateExcellent
Manganese SteelASTM A128High impact strength and resistance to abrasion when hardened, easily work hardened. Commonly used in mining and construction.Difficult to machine and weldLow, even after softening. Work hardens rapidly under cutting and grinding tools.Fair, heat must be kept low to avoid crackingFair
Martensitic Stainless SteelsCA15 (410), 420, 440Hardenable by heat treatment. Good corrosion resistance, good impact resistance, capable of elevated temperature strength. Commonly used in pumps and valves, turbines, and propellers.Sometimes brittle depending on heat treatmentModerate to goodModerate, requires post-weld stress reliefGood in mildly corrosive environments; good erosion resistance, good resistance to cavitation
MonelM30H, W MonelHigher strength than pure nickel, highly corrosion resistant. Commonly used in aggressive seawater applications.Non-weldableFair, work hardens quickly, slow feeds and speeds requiredNon-weldableExcellent, resistant to most acids and highly corrosive media.
NickelCZ100Resistant to strong caustic solutionsDifficult to weld, sometimes non-weldableFairLow, prone to gasGood, resistant to strong caustic solutions
Nickel SuperalloyInconel, Waspaloy, HastelloyUsable at very high temperatures for strength and corrosion resistance. Used in gas turibines and aerospace and nuclear markets.Sometimes difficult to weldModerateModerate to fair, depends on the gradeExcellent even at high temperatures and extremely corrosive environments
Ni-Resist (Ductile)D-2, D-5BGood combination of ductility, corrosion resistance, and wear resistance. Depending on the grade, can perform well at higher temperatures.Sometimes difficult to weldModerateFair to moderateModerate, mildly corrosive environments and sea water but not as good as stainless steels
Ni-Resist (Gray)Type 2, Type 3Good combination of corrosion resistance and wear resistance.Brittle, Sometimes difficult to weldGoodFairModerate, mildly corrosive environments and sea water but not as good as stainless steels
Precipitation Hardened Stainless SteelCB7Cu-1 (17-4), CB7Cu-2 (15-5)High-strength, toughness and weldability. Excellent resistance to stress corrosion cracking (chlorides). High resistance to sulfuric and nitric acids. Used in pump and valve components where hot corrosives or vapors are used.Complex heat treatment, difficult to machine after hardeningGood after annealing and before hardeningMust be welded in the softened condition, then re-heat treated and agedGood
Silicon BrassC87500High strength and good corrosion resistance.Cannot be hardenedModerateFairGood
Silicon BronzeC87610Good strength and corrosion resistance. Excellent bearing properties.Crack proneModerateFairGood
Super Austenitic Stainless SteelCN7M (Alloy20), CN3MN (AL6XN)Resistant to crevice and pitting corrosion (chlorides) and stress corrosion crackingEmbrittlement at higher temperatures. Prone to segregation and cracking in the casting process, sometimes higher costsFairFairVery good, better than normal austenitic stainless steels
Tin BronzeC90300, C90500, C90700High hardness and strength with good ductility. Good wear resistance and corrosion resistance, commonly used in seawater and brines.Tin addition makes this more expensive than lead or bismuth alloysModerateFairGood, used in seawater applications
Tool SteelD2, A2, H13Extremely high hardness and strength, especially compressive and impact strength.Non-weldableModerate in the annealed state before hardeningNon-weldableLow
//Customer Satisfaction

See what we can do for you.

Customer satisfaction is important to us. We work closely with our customers to engineer the right process for their application. To find out what Waukesha Foundry can do for you, contact us today.