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Alloy Casting: Making The Best Choice

Table below features a few of the more popular casting alloys we pour for customers out of our 250+ total.

  MARTENSITIC STAINLESS STEELS (HARDENABLE) AUSTENTIC STAINLESS STEELS (NON-HARDENABLE) PRECIPITATION HARDENING STAINLESS STEEL DUPLEX STAINLESS STEELS NICKEL BASED ALLOYS COBALT BASED ALLOYS HEAT RESISTANT STAINLESS STEELS CARBON AND LOW ALLOY STEELS
Representative Alloys CA15, CA6NM. CF8, CF8M, CN7M CB7Cu-1 and CB7Cu-2. ILLIUM® P, ILLIUM® PD, CD4MCu, CD3MN (2205) Monel®, Inconel®, Hastelloy®, ILLIUM® G, ILLIUM® 98 ILLIUM® 6, ILLIUM® 21, (STELLITE®) HK40, HT 8620, 4130, WCB, LC3, C5
Applications For good wear & corrosion Most widely used corrosion resistant Alloys; useful at temperatures from cryogenic to 1000 F (500 C), depending on the grade For high-strength requirements (to 175 KSI); a superior combination of strength, toughness and weldability with moderately good corrosion resistance Where higher strength is advantageous; resisting erosion and corrosion Where maintenance or product purity is important. Well-suited to high temperature conditions Hot or corrosive atmosphere where lubrication is difficult; for resistance to wear, galling, impact, and thermal shock For high strength and corrosion resistance at temperatures above 1200 F Machine parts, structural components
Limitations CA15 is prone to cracking in heavy sections; special procedures improve stress corrosion cracking resistance Special grades available for applications requiring higher strength, low magnetic permeability, etc. Should be used in an aged condition Some grades difficult to produce in heavy sections Difficult for the inexperienced Foundry to produce Low ductility in many grades Exposure to service conditions may degrade room temperature ductility and weldability; cannot be hardened Low corrosion resistance.
Typical Uses Aerospace, gas turbines, marine, petro-chemical, pulp and paper, food processing Chemical processing, marine, power plant, pulp and paper, fertilizer, food and dairy Structural parts requiring at least moderate corrosion resistance Pump parts, mixers Fluid handling systems, chemical processing, fresh and salt water applications Bushings, sleeves, knives, pump components, valves Petrochemical refining, heat treatment furnaces Knives, cutter blades, die casting dies
Machinability Fair to good, based on grade & conditions Fair Good when in condition A (solutioned) Good Good to fair. Lower feeds and speeds generally Fair Fair. Slow feeds and deep cuts recommended Fair to good, depending on grade and condition
Weldability Requires post-weld stress relief Generally very good; fully austenitic grades may require special procedures Should be welded in soft condition, then re-solutioned and re-aged Good to fair. Post-weld heat treatment required Generally good Good to poor, depending on grade Shielded metal arc welding (SMAW) produces good results Fair to excellent, depending on grade and condition.
Corrosion Resistance Good in mildly corrosive environments; good erosion resistance, some grades have very good resistance to cavitations Though some grades are used as-cast, heat treatment maximizes corrosion resistance Moderate to good Subject to stress corrosion cracking in some media Good resistance to stress corrosion cracking. Some grades especially resistant to attack from hydrochloric acid; others to hydrofluoric acid Excellent Superior resistance to air, combustion gases, flue gases (reducing and oxidizing) and steam Low

Associations

  • Stainless Foundry | Steel Castings | Investment Sand Foundry
  • Stainless Foundry | Steel Castings | Investment Sand Foundry
  • Stainless Foundry | Steel Castings | Investment Sand Foundry
  • Stainless Foundry | Steel Castings | Investment Sand Foundry
  • Stainless Foundry | Steel Castings | Investment Sand Foundry
  • Stainless Foundry | Steel Castings | Investment Sand Foundry
  • Stainless Foundry | Steel Castings | Investment Sand Foundry