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

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

Post by baba » Sun Jan 04, 2015 1:18 pm

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

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

Post by Rich V » Sun Jan 04, 2015 2:40 pm


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

Post by ChimeraPrecision » Sun Jan 04, 2015 4:03 pm

Use Matweb.com

I have never been unable to find a material property.
Keep calm, and suppress on

speed6
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Re: Does anyone have the allowable stress charts for 17-4 stainless?

Post by speed6 » Sun Jan 04, 2015 7:46 pm

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.

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

Post by T-Rex » Sun Jan 04, 2015 8:17 pm

this might be useful
Completed Builds www.silencertalk.com/forum/viewtopic.php?t=79895
Burst Calculator www.engineersedge.com/calculators/pipe_bust_calc.htm
Silencer Porn www.instagram.com/explore/tags/silencerporn/

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

Post by Mr. Teck » Sun Jan 04, 2015 10:04 pm

Anyone know which hardness state is preferable for 17-4 suppressor internals? H900 or H1150?

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

Post by baba » Sun Jan 04, 2015 10:22 pm

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

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

Post by missilemantdi » Sun Jan 04, 2015 10:31 pm

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.

speed6
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Re: Does anyone have the allowable stress charts for 17-4 stainless?

Post by speed6 » Mon Jan 05, 2015 10:34 am

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.

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