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D-Monel Mech. Properties
2

D-Monel Mech. Properties

D-Monel Mech. Properties

(OP)
Hi all;

  I've tried to find, unsuccesfully, the mechanical properties (tensile and yield mainly) for Monel, A494, Grade M-25S. The ASTM spec has no data for this alloy other than hardness. I believe the Federal Spec for this is QQ-N-288 Comp. D, but again no data. Hours of web searching for more info on this casting grade was a no-go.

  Can anyone point me in a direction I haven't looked ??

Thanks,
Bob

RE: D-Monel Mech. Properties

This also peaked my curiosity. This is S-Monel, Grade M-25S under ASME SA-494. There are no mechanical properties listed under this specification.

RE: D-Monel Mech. Properties

I did find some additional information on Monel M-25S material;

Composition as listed in the Table;
C - < 0.25%
Cu -  30%
Fe -  < 3.5%
Si -  4%
Ni - Bal

Mechanical Properties
YS 0.2% min 415 MPa
UTS min     690 MPa

Ref translate page; www.fondinox.com/leghebasenichel.htm

RE: D-Monel Mech. Properties

(OP)
Thanks metengr;

  This is the info I was looking for, curious the ASTM spec has chemical composition info but no mechanical props, I wonder why ?  Anyway, I am trying to find a non-magnetic replacement for 15-15LC that I can cast ($ issue), and the foundry reccomended this, but had no info on it :)

Thanks again,
Bob

"You can observe a lot just by watching"
Yogi Berra

RE: D-Monel Mech. Properties

We have two references to other grades on our database. Chemistries are roughly the same as M25S.

Alloy 505:  0.2% proof 560MPa min, Tensile 830MPa min, 1% elongation min, 275-350HB or 29-38HRC

Alloy 350: 0.2% proof 500MPa min, Tensile 800MPa min, 1% elongation min, 300-350HB

Bruv


RE: D-Monel Mech. Properties

The Nickel Institute http://www.nickelinstitute.org/
has 732 papers for "Nickel Copper."
The one below has the mechanical properties of Nickel-Copper Alloy 505 (QQ-N-288, Comp. D) in the as-cast, annealed and annealed+aged [hardened] conditions.
NiDI Technical Paper 515 - SOME NICKEL-COPPER CASTING ALLOYS -- ENGINEERING PROPERTIES (1969)
"Presents chemical, physical and mechanical properties of nickel-copper casting alloys 410, 411, 505 and 506. Discusses their high strength and toughness and excellent resistance to corrosion by a variety of chemicals and marine environments. Includes information on heat treating, machining and joining."
http://www.nickelinstitute.org/index.cfm/ci_id/3125/la_id/1/tecArticle/1

I entered the following before bruv's post that Monel S = Alloy 505.  The data agrees with that from above except for hardened condition elongation, which I've noted. Also, some yield strengths for this alloy are for 0.5% strain.

MONEL,S,[As-]CAST
Tension Ultimate .... 120-145 Ksi
Tension Yield Point .. 80-130 Ksi
Modulus of Elasticity .. 24.1 Million psi
Elongation % ..........  1-4 %
http://www.martinsprocket.com/PDF/metalprop.pdf

NICKEL BASE ALLOYS
TYPICAL HARDNESS VALUES AND SEPARATELY CAST TEST BARS
Monel S
Condition Hardened  120 [Annealed + Aged]
Tensile Min. 120 (KSI)
Yield Min.     85 (KSI)
Approx. Elong.  0 %     [other sources give 1-3%]
Hardness Max.   Rc 38   [BHN 300-380]
http://www.dameron.net/images/DAF_alloyGuide.pdf

RE: D-Monel Mech. Properties

(OP)
Thanks everyone. The nomenclature for some of the Monel alloys is a bit confusing. I feel good now about using monel-s in place of the 15-15LC.
  Thanks for the links kenvlach, I must have hit >50 sites during my search, but I missed these.

"You can observe a lot just by watching"
Yogi Berra

RE: D-Monel Mech. Properties

Is 65% Ni really any less money than 15-15?
This doesn't sound right.

Just remember, these are low stength alloys.
They do look nice.

= = = = = = = = = = = = = = = = = = = =
Corrosion, every where, all the time.
Manage it or it will manage you.
http://www.trent-tube.com/contact/Tech_Assist.cfm

RE: D-Monel Mech. Properties

EdStainless must be right; the foundry maybe suggested in their own be$t interest.  Monel usage has steadily declined over the past 50 years due to better performance/price of newer SS's, aluminum bronzes, etc.  Probably why the Monel-S data was hard to come by and why it's not sold by Special Metals (with INCO's rights). Also, other Monels may be better choices (although I don't know how castable).
http://www.specialmetals.com/products/

For seawater resistance, even titanium may be less expensive since probably much less weight needed.
What is your application?

RE: D-Monel Mech. Properties

We have been casting ASTM A494 M35-1, M35-2, M25S and M30C successfully for many years. Like all things, it's easier when you know what you're doing...

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