High Alloy/Stainless Steel

Stainless Steel Casting and Duplex Steel Casting

High alloy and stainless steel casting alloys are high-value alloys that are suitable for many applications.

Badger Alloys offers more than 60 different high alloy and stainless steel alloys to meet your casting needs.

Types of High Alloy/Stainless Steel Alloys

AUSTENITIC

Austenitic stainless steels offer:

• Improved weldability
• Resistance to a great variety of corrosives
• Good castability, machinability, weldability
• Improved strength at elevated temperatures

Typical uses and applications for austenitic stainless steels include:

• Paper pulp solutions and nitric acids
• Hot sulfuric acids
• Dilute hydrochloric acid and hot chloride solutions
• Nitric-hydrofluoric pickling solutions

MARTENSITIC

Martensitic stainless steels are:

• Resistant to atmospheric corrosion
• Resistant to mild organic media in mild service
• Hardenable through heat treatment

In addition, these steels:

• Have good impact resistance
• Offer improved elevated temperature strength properties
• Have improved seawater corrosion resistance with additions of molybdenum

Martensitic stainless steels are commonly used for:

• Pumps, compressors
• Valves
• Hydraulic turbines
• Propellers
• Machinery components

DUPLEX

Duplex stainless steels:

• Are about twice as strong as regular austenitic or ferritic stainless steels
• Have a range of corrosion resistance
• Show good stress corrosion cracking resistance
• Have lower nickel and molybdenum contents than their austenitic counterparts of similar corrosion resistance, resulting in lower cost

Duplex stainless steels are commonly used in applications that have exposure to chlorides and require crevice corrosion resistance.

HEAT RESISTANT

Heat resistant stainless steels provide:

• Scaling resistance at high temperatures
• High sulfur applications where high strength is not required
• Corrosion resistance at high temperatures (moderate strength)
• Resistance to thermal fatigue and shock induced by severe temperature cycling

Common applications for heat-resistant stainless steels include:

• Ore roasting furnace parts, rabble arms and blades, steel mill furnaces
• Salt pots
• Grate bars
• Tube supports and beams in oil refinery heaters
• Scaling resistance at high temperatures
• Radiant tubes
• Oxidizing and carburizing atmospheres

PRECIPITATION HARDENED

Precipitation hardened stainless steels offer:

• Excellent resistance to stress corrosion and cracking in substances containing chloride (e.g. seawater)
• High resistance to sulfuric acid and nitric acids

Precipitation/age-hardened stainless steels are commonly used where high strength and improved corrosion resistance are required. For example:

• Highly stressed machined castings in the aircraft and food processing industries
• Pumps
• Valves
• Stressed components in the marine, chemical, textile and paper industries

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