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!