410 Stainless Steel – AMS 5611 – AMS 5612 Aircraft Quality – AQ to AMS 2301

Full Transcript:

What’s up guys?!?!?! This is Michael with Michael Talks Metal, back for Part 2 on 410. Couldn’t wait, could you? So our video today will introduce another common stainless steel found in specifications for aerospace applications.

This week we will focus on the  type 410 alloy modified to control any ferrite present in the hardened condition. The UNS designation S41001. It is a martensitic alloy that can be heat treated to moderate hardness and strength levels. Typical applications require some strength and hardness but where the limited corrosion resistance of this 12% chromium alloy is adequate.  Elevated temperature applications are generally limited to a maximum of 1000 deg F.

This alloy is commonly supplied to aircraft quality AMS 5612 which requires AMS 2301 cleanliness.

Premium aircraft quality AMS 5611  requires Consumable Electrode Melting (CEM)  and AMS 2303 cleanliness.

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

Typical hardening range is 1700 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 stainless steel 410 magnetic? Yes 410 is magnetic .

410       SAE 51410 modified    UNS S41001

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: 54 %   (of 1212)

410 Chemical Composition: 

Carbon            0.12 – 0.15 %

Manganese      0.60 % Max

Silicon              0.50 % Max

Phosphorus      0.025 % Max

Sulfur                0.025 % Max

Chromium        11.50 – 12.50 %

Nickel                0.75 % Max

Molybdenum     0.50 % Max

Copper              0.50 % Max

Tin                     0.05 % Max

Nitrogen            0.08 % Max

Typical maximum hardness in the annealed condition:  241 BHN

Response to heat treatment in standard test sample:

Hardened and Double Tempered

180,000  Min Tensile Strength

147,000  Min Yield Strength*

10 % Min Elongation

30 % Min Reduction of Area

Hardness 39 -44 Rc

* Yield Strength 145,000 Min in AMS 5611

Delta Ferrite determination per AMS 2315:

AMS 5611 –  5% Max     AMS 5612  –  2 % Max

Specifications for annealed condition:

AMS 5612: Bars, Forgings, Tubing, and Rings; Ferrite Controlled

AMS 5611: Bars Forgings, Tubing, and Rings;  Ferrite Controlled, Consumable Electrode Melted

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. I will remind you for the umpteenth time 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, 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!