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Does anyone have the allowable stress charts for 17-4 stainless?

Posted: Sun Jan 04, 2015 11:18 am
by baba
I can't seem to find them online. I've been searching so long I'm cross eyed. Found plenty of 300 series charts...

I will offer up this link to the Ti charts which I found. Probably old news for some of you guys but may be helpful to others.

http://www.azom.com/article.aspx?articl ... e_Strength

Thanks,
Brian

Re: Does anyone have the allowable stress charts for 17-4 stainless?

Posted: Sun Jan 04, 2015 12:40 pm
by Rich V

Re: Does anyone have the allowable stress charts for 17-4 stainless?

Posted: Sun Jan 04, 2015 2:03 pm
by ChimeraPrecision
Use Matweb.com

I have never been unable to find a material property.

Re: Does anyone have the allowable stress charts for 17-4 stainless?

Posted: Sun Jan 04, 2015 5:46 pm
by speed6
If I can remember I will see if it's in ASME Section II or RCC-M tomorrow. I am not sure it is considered a code material in the B&PVC, and the RCC-M will list the European material spec (X6CrNiCuZn 17.04 or somesuch), but it will be close and list them at different temps.

Re: Does anyone have the allowable stress charts for 17-4 stainless?

Posted: Sun Jan 04, 2015 6:17 pm
by T-Rex
this might be useful

Re: Does anyone have the allowable stress charts for 17-4 stainless?

Posted: Sun Jan 04, 2015 8:04 pm
by Mr. Teck
Anyone know which hardness state is preferable for 17-4 suppressor internals? H900 or H1150?

Re: Does anyone have the allowable stress charts for 17-4 stainless?

Posted: Sun Jan 04, 2015 8:22 pm
by baba
That is great info. Exactly what I was after. Thank you all.

Oh, and I always hear H900 is the holy grail of 17-4, though it looks like the H1150 is still quite strong, giving up also some erosion resistance (hardness)

-Brian

Re: Does anyone have the allowable stress charts for 17-4 stainless?

Posted: Sun Jan 04, 2015 8:31 pm
by missilemantdi
http://www.grantadesign.com/userarea/mil/mil5.htm
On the left side navigation tree, click steel, then precipitation hardened, then 17-4.
Scroll thru the pages to find the H-condition you want. This is materials allowables that is now MMPDS.
Temperature plots in there too.

Re: Does anyone have the allowable stress charts for 17-4 stainless?

Posted: Mon Jan 05, 2015 8:34 am
by speed6
ASME B&PVC 2010 edition section II table Y1 (yield strength data) shows 109.2 ksi @ 100 F, 101.8 @ 300 F, 98.3 @ 400 f, 95.2 @ 500 F, 92.7 @ 600, 90.3 @ 700. This is for SA-564 630 H1100 (17-4 H1100 temper). H 1150 is about 10 ksi less at each temperature, H1075 is about 10 ksi more.

Section II also lists S (allowable stress, tresca yield criteria) and the less conservative Sm (stress intensity, a.k.a. von mises criteria) if you want that. I would say use the yield data above and include a factor of safety. This is basically what "S" is in the code, IIRC 60% of yield or thereabouts.