logo
Kingsun & Top CNC Machining Service supplier from China
Ultimate Guide to CNC Machining
Plastic Machining *
Metal Machining *
Ultimate Guide to CNC Machining Surface Finish

Stainless Steel 416

Stainless Steel 416 is a type of martensitic stainless steel that attracts attention due to its high strength, corrosion resistance, and machinability. It is widely used in applications where strength and hardness are essential, such as in the manufacture of valves, pumps, and fasteners.

Material Type

Stainless Steel 416 falls into the category of martensitic stainless steel. Martensitic stainless steels have a very good combination of strength and hardness owing to some carbon and chromium in it.

Alternative Names

The term “Stainless Steel 416” describes the composition of the steel, which is iron, at least 12% of chromium, and normally around 0.15 and 0.25 percent of carbon. It also includes a small amount of other constituents like manganese, silicon, phosphorus, and nickel, which alter its features. Such designated standard is accepted in most of the common related systems such as ASTM A276/A479, and it is widely known for its machinability and resistance to corrosion.

Process Compatibility

Stainless Steel 416 is a material that can be used in many kinds of manufacturing processes. It has good machinability and can, therefore, be used for precision working parts. The alloy can also be further heat-treated to achieve higher hardness and strength properties, but welding is not usually recommended. The alloy can be formed at room temperature, but it is given preference to austenitic grades since it is more difficult. In the end, it provides several alternatives in surface finishing for particular and practical purposes.

Stainless Steel 416
Picture of Jason xue
Jason xue

Kingsun's senior machining engineer

Stainless Steel 416 Properties

Stainless Steel 416 is very well known for its machinability and good resistance to corrosion which is why it is widely used in different industries. Where long-lasting products with performance are needed – this is the material to go!
1

Mechanical Properties

  • Proof Stress: Minimum 450 MPa
  • Tensile Strength: 650 - 850 MPa
2

Physical Properties

  • Density: 7.75 g/cm³
  • Modulus of Elasticity: 200 GPa
3

Thermal Properties

  • Thermal Expansion: 9.9 x 10⁻⁶ /K
  • Thermal Conductivity: 24.9 W/m.K
4

Electrical Properties

Electrical Resistivity: 0.57 x 10⁻⁶ Ω.m

5

Post Treatments

  • Heat Treatment: Normalizing is performed at a temperature within the range of 815 – 900 °C, Pre – heating stress relieving is done within 650 – 760 °C and hardening involves heating to a temperature range of 925 – 1010 °C.
  • Weldability: Poor, however, can be enhanced with the use of low-hydrogen electrodes of Grade 410.
6

Common Applications

  • Automatic screw machined parts
  • Washing machine parts
  • Valve parts
  • Gears
  • Pump and motor shafts
  • Studs, bolts, and nuts

Recommended Reading

5.1
Read More
Mastering the Art of Milling Aluminum: CNC Techniques and More
Read More
Unlocking the Potential of Injection Molding for Medical Devices: A Comprehensive Guide
Read More

Frequently Asked Questions (FAQs)

Q: What is 416 stainless steel?

A: It is a martensitic alloy of stainless steel 416 that is renowned for its high machinability as well as impressive resistance to wear. It finds its use in many industries that require materials that can withstand various machining processes yet remain durable.

Q: What are the physical properties of 416 stainless steel?

A: Physical properties of 416 stainless steel include a density of about 7.75 g/cm³, a melting point that ranges between 1400 – 1450 Celsius degrees, and fairly high thermal and electric conductivities. They also retain remarkable high strength and toughness, especially after procuring the heat treatment process of hardening and tempering.

Q: In what way is 416 stainless steel important with regard to corrosion resistance as compared with other stainless steel grades?

A: Even though 416 stainless steels have corrosion resistance thanks to the chromium content, they are relatively susceptible to corrosion compared to other austenitic grades like stainless steel 304 and 316. Nevertheless, these materials can be used in applications that are exposed to mild corrosion such as water and acids making it quite beneficial.

Q: What are the mechanical properties of 416 stainless steel?

A: Mechanical properties of 416 stainless steel include tensile strength of approximately 90,000 psi, yield strength of approximately 60,000 psi and a Brinell hardness of around 200-250 HB in the hardened state. Such properties may supply enough characteristics for the generation of improved and lasting components.

Q: Is 416 stainless steel easy to machine?

A: Yes, 416 stainless steel is identified as the first free machining grade stainless steel or may actually be the stainless steel grade that has the maximum machinability. The sulphur content makes 416 easier to work with, making it possible for higher cutting speeds at relatively lower costs of the tools.

Q: What does the heat treatment of 416 stainless steel involve?

A: In the treatment process, the 416 stainless steel is firstly heated to about 1000-1100°C to be hardened and subsequently quenched. In addition, this material survives tempering at heat treatment temperatures in the range of 650 to 675°C to obtain necessary mechanical properties such as enhancement of its toughness.

Q: What types of processing services are used for 416 stainless steel?

A: Available processing services of 416 stainless steel incorporate machining, fabrication, heat treating and surface finishing. These services enable some of the performance and dimensional standards of components constructed from such steel grade to be achieved.

Q: Can 416 undergo welding?

A: The weldability of 416 grade stainless steel is quite low because of high carbon content which makes cracking more likely. There are instances where preheat and post weld heat treatments are suggested in order to minimize the risk of failure when welding 416 stainless steel.

Q: Where can I source 416 stainless steel rod and other products?

A: 416 stainless steel rod and numerous other products may be obtained from specialized suppliers and distributors of stainless steels and welding consumables. It is very important to note that such a material has to meet the ASTM requirements ASTM A582 to be accepted in the industry.

Scroll to Top