Full Transcript:

What’s up guys?!?!?! We’re back and Michael’s Talkin Metal again. Today, our video will introduce another stainless steel found in specifications for aerospace applications. Two variants of type 416 exist in AMS Specifications.

Type 416 alloy with the UNS designation S41600 is the more common martensitic alloy; similar to type 410 but with added sulfer to improve machinability. UNS S41623 uses selenium instead of sulfer. Both alloys can be heat treated to moderate hardness and strength levels. Typical applications require some strength and hardness but where the limited corrosion resistance of these 12% chromium alloys is adequate. Elevated temperature applications are generally limited to a maximum of 1000 deg F.

Typical annealing temperature is from 1550 to 1650 deg F followed by slow cooling.

Typical hardening range is 1750 to 1850 deg F followed by an air or oil quench depending on section size. Temper as required for desired hardness

Maximum corrosion resistance is in the fully hardened condition.

Is 416 magnetic? Yes, 416 is magnetic.

416 SAE 51416 UNS S41600 —– 416 Se SAE 51416 Se UNS S41623
Density: point 28 lbs per cubic inch

Mean Coefficient of Thermal Expansion from 32 -212 deg F:
5.5 microinch per inch per deg F

Machinability rating: 110 % (of 1212)

Chemical Composition 416 UNS S41600 AMS 5610 Type 2:
Carbon 0.15 Max%
Manganese 2.50 % Max
Silicon 1.00 % Max
Phosphorus 0.060 % Max
Sulfur 0.15 % – 0.40 %
Chromium 11.50 – 13.50 %
Nickel 0.75 % Max
Molybdenum 0.60 % Max
Copper 0.50 % Max

Chemical Composition 416 Se UNS S41623 AMS 5610 Type 1:
Carbon 0.15 % Max
Manganese 1.25 % Max
Silicon 1.00 % Max
Phosphorus 0.060 % Max
Sulfur 0.030 % Max
Selenium 0.18 – 0.35 %
Chromium 11.50 – 13.50 %
Nickel 0.75 % Max
Molybdenum 0.60 % Max
Copper 0.50 % Max

Typical maximum hardness in the annealed condition: 241 BHN

Response to heat treatment in standard sample: 35 RC Minimum

Specifications for annealed condition:

AMS 5610: Bars and Forgings

ASTM standards for commercial applications are too numerous to detail here.

Refer to our website for more information and videos on stainless steels

Additional specifications and part requirements can alter what we have shown you here today. Time 80 – please do not forget, never forget to CHECK THE SPECS !!!!!!!!!!! Check out the earlier videos on stainless steels…. and visit us at our website www.michlinmetals.com. If you made it this far and haven’t subscribed please think about it, here. Missed last weeks’ video, click here! Thanks for watching, this is Michael with Michael Talks Metal. See you next Thursday 10am. I’m out!