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What You Need to Know About Stainless Steel Casting Grades

Update On Aug 04.2022

Stainless Steel Casting Grade

If your project requires specific castings with corrosion resistance, high dimensional accuracy, smooth surface finishes, complex geometries and high detail levels. Then stainless steel investment casting is your best choice! Stainless steel is a chromium-containing iron alloy that provides a protective layer against staining and corrosion. It performs well in liquid environments and provides heat resistance at high temperatures.

 

Stainless Steel Casting Grades

There are many stainless steel alloy grades on the market today. Based on your performance and application requirements, our metallurgical experts can help you select the best alloy for your stainless steel investment casting needs.

Austenitic Stainless Steels Grades

Austenitic stainless steels benefit from very high ductility and toughness. When delivered in the quench-annealed state they are very soft and formable, and when delivered as cold stretched or temper rolled they have increased hardness and strength. The strength of austenitic steel grades is reinforced with increased levels of carbon, nitrogen and, to a certain extent, molybdenum.

Austenitic stainless steel series 200 and 300 have become staples in a wide range of industries such as chemical, pharmaceutical, food and beverage, textile, and pulp and paper.

Austenitic stainless steel
Application
304 and 304L (standard grade)
Tanks, storage vessels and pipes for corrosive liquids
Mining, chemical, cryogenic, and pharmaceutical equipment
Kitchen equipment and cutlery
Architecture
309 (high chrome and nickel grades)
Furnace, kiln, and catalytic converter components
310 (high chrome and nickel grades)
316L (high molybdenum content grades)
Chemical storage tanks, pressure vessels, and piping
318 (high molybdenum content grades)
316Ti (stabilized grades)
Afterburners
Superheaters
Compensators
Expansion bellows
321 (stabilized grades)
200 Series (low nickel grades)
Dishwashers and washing machines
Cutlery and cookware
In-house water tanks
Indoor and non-structural architecture
Food and beverage equipment

 

Ferritic & Martensitic Stainless Steel Grades

Martensitic steel grades and precipitation hardening (PH) stainless steels are heat treatable and can therefore provide hardness and strength in a wide range of applications. Allowing for workability they are supplied in solution annealed condition.

AISI Grade
Applications
410
General-purpose martensitic steel. Used for applications where corrosion is mild. Applications include cutlery, steam and gas turbine blades, bushings, etc.
416
Contains additional sulphur and phosphorus to improve its machinability. Its variant 416Se replaces sulphur with selenium. Applications include screws, gears etc.
420
Contains increased carbon for improved mechanical properties. Applications include dental and surgical instruments.
431
Contains increased chromium for better corrosion resistance. Applications include valves and pumps.
414
Contains added nickel for improved corrosion resistance. Applications include springs.
440
Contains increased chromium and carbon for improved hardness and corrosion resistance. Applications include measuring instruments, ball bearings, gauge blocks, moulds and dies, etc. It has sub-grades, 440A, 440B and 440C which have varying amounts of carbon to increase/reduce its hardness and toughness.

 

Precipitation Hardening (PH) - Martensitic Stainless Steel Grades

Precipitation hardening stainless steels are chromium and nickel containing steels that provide an optimum combination of the properties of martensitic and austenitic grades. Like martensitic grades, they are known for their ability to gain high strength through heat treatment and they also have the corrosion resistance of austenitic stainless steels.

Precipitation Hardening Stainless Steels Applications
17-4PH Widely used in military as well as aerospace and petrochemical applications
15-5PH

 

Austenitic and Ferritic (Duplex) Stainless Steel Grades

Duplex stainless steel refers to a material whose microstructure is composed of ferrite phase and austenite phase, each of which accounts for about 50%. Duplex stainless steel is a kind of steel that combines excellent corrosion resistance, high strength and easy processing and manufacturing.

Duplex Stainless Steel Grades Applications
2205 storage tanks, container or vessels, in pulp and paper, as well as in chemical industry

 

The Benefits of Choosing Stainless Steel Castings

Stainless steel casting belongs to investment casting or precision casting. It is a casting process with little or no cutting. It is an excellent process technology in the foundry industry. It is widely used and is mainly used in the automotive industry, food machinery, medical industry, etc. So why is stainless steel casting widely used and what are its advantages?

Because investment castings have high specification precision and surface finish, it is possible to reduce machining work by leaving only a small amount of residual processing at a higher specified position on the parts, and even some castings are only left for grinding, polishing and polishing. capacity, can be applied without machining. It is not difficult to see that the choice of stainless steel casting method can save a lot of mechanical equipment and comprehensive production and processing time, and greatly save metal materials.

Another advantage of the stainless steel investment casting method is that it can cast complex castings of various alloys, and is very capable of casting high temperature alloy castings. For example, the leaves of a jet-type diesel engine have a streamlined outer contour and an inner cavity for refrigeration that are basically impossible to produce by machining processes. Manufacturing with stainless steel casting processing technology can not only ensure mass production, ensure the consistency of castings, and prevent the stress of residual knife lines after machining.

 

Reliable Stainless Steel Casting Supplier

Besser Casting is specialized in producing stainless steel castings of various specifications. With our professional knowledge, we can provide the best stainless steel casting solution for your project. And we can guide you in choosing the perfect stainless steel grade for your application. We are able to supply any quantity of stainless steel castings weighing from 0.1kg-60kg.

Additionally, any machining requirements for stainless steel castings can be obtained from our company due to our ability to provide machined investment castings. We can provide one-stop service from moulding, casting, and machining. On the certificate, we have passed ISO 9001-2015. All quality is guaranteed.

Working with us, you will enjoy our competitive prices, high quality, and impressive service. Contact us now and you will get an answer within 24 hours.

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