ASTM Equivalent

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inspectorjoe Associate Join Date: Apr 2008 Posts: 50	ASTM Equivalent 06/24/2010 3:52 AM
	Would aprreciate if anybody can tell me what is the ASTM equivalent of DIN 1.7779 20CrMoV135??? i am trying to find the Maximum allowable stress value of this material.
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#1 "Re: ASTM Equivalent" by Milo on 06/24/2010 11:26 AM (score 2)
#2 "Re: ASTM Equivalent" by piping_engineer on 06/25/2010 1:16 AM (score 2)

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#5 "Re: ASTM Equivalent" by Kwetz on 06/25/2010 2:27 PM (score 1)

Milo

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Re: ASTM Equivalent

06/24/2010 11:26 AM

I don't know of a chemical equivalent, nor do i know which ASTM spec for product is applicable. The grade in germany however is for Seamless tubes:

Chemical Composition

Grade	20CrMoV135
WNr.	1.7779
Standard	DIN 17176
Country	Germany

Heat Analysis

Element	Symbol	Min.	Max.
Carbon	C	0.17	0.23
Chromium	Cr	3.0	3.3
Manganese	Mn	0.3	0.5
Molybdenum	Mo	0.5	0.6
Phosphorus	P	0.025
Silicon	Si	0.15	0.35
Sulfur	S	0.02
Vanadium	V	0.45	0.55

That 3% Chrome is a real showstopper for me.

Milo

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piping_engineer Associate Join Date: Jan 2010 Posts: 52 Good Answers: 2	#2 Re: ASTM Equivalent 06/25/2010 1:16 AM
	I could find its equivalent ASTM but here are its mechanical properties. Yield Strength: 590 MPa. Tensile Strength : 740 MPa min and 880 Mpa Max. i got this data from a software "Key to Steel"
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CARE-PIC Member Join Date: Apr 2010 Posts: 8	#3 Re: ASTM Equivalent 06/25/2010 9:24 AM
	THERE IS NO ASTM EQUIVALENT
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CARE-PIC Member Join Date: Apr 2010 Posts: 8	#4 Re: ASTM Equivalent 06/25/2010 9:26 AM
	sorry about the caps being on. not shouting. it's just that the program i was using before i replied requires all caps. sorry again
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Kwetz Guru Join Date: Oct 2007 Location: Madrid, Spain Posts: 716 Good Answers: 25	#5 Re: ASTM Equivalent 06/25/2010 2:27 PM
	As Milo said, there's no exact ASTM equivalent to DIN/EN 20CrMoV135. But maybe this information on yield strength at different temperatures may assist you in establishing an allowable stress limit (once known your design temperature and selected a safety factor): As no values appear in the standard for T>500ºC, I will not use it above that. Note: Heat treatment condition "V" means "vergütet" that's: quenched and tempered Kind regards __________________ It's stupid to discuss about AI: We´ve reached by the "B" way. We' ve producing men as clever as machines.
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Anonymous Poster	#6 In reply to #5 Re: ASTM Equivalent 06/25/2010 11:03 PM
	Thanks man...
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piping_engineer Associate Join Date: Jan 2010 Posts: 52 Good Answers: 2	#7 Re: ASTM Equivalent 06/25/2010 11:30 PM
	in my last last reply i wanted to say that "i could not find its ASTM equivalent", i just missed "not" sorry for the mistake
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Milo Guru Join Date: Jul 2006 Location: "Dancing over the abyss." Posts: 4884 Good Answers: 243	#8 In reply to #7 Re: ASTM Equivalent 06/26/2010 12:08 PM
	It's Okay. This forum tends to be self correcting, as Kwetz's excellent follow up post demonstrates. Thanks for contributing. Milo __________________ People say between two opposed opinions the truth lies in the middle. Not at all! Between them lies the problem, what is unseeable,eternally active life, contemplated in repose. Goethe
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Anonymous Poster	#9 Re: ASTM Equivalent 06/27/2010 5:54 AM
	DEAR JOE, NO EQUIVALENT IN ASTM QA/QC ENG: AMR SOLIMAN PETROJET-EGYPT
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