Skip to main content

[MW:27850] RE: 27842] What is the tempering temperature followed to meet mechanical properties of CA15 castings-reg

By Materials & Welding

Hi Sankaran,

 

I did not get the responses to my earlier queries.

Please find the recommended or desirable properties for this steel as per the data sheets from https://www.sfsa.org. The ductility of this steel at the asked hardness values of 250-300 BHN could be  very poor if the hardness is close to 300 BHN. Hence a balance between hardness and ductility(%EL) is always desired.

Take a look at the data sheet and use this at your discretion.

Important texts are highlighted for guidance.

 

Thanks.

 

 

P.Goswami.P.Eng, IWE.

Welding & Metallurgical Specialist

Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/

Email:pgoswami@quickclic.net,pradip.goswami@gmail.com

************************************************************************************************************************************************

What's the tempering cycle being proposed by the vendor?

What's the component.

Hardness in the vicinity of 270 HB is not unusual for this material. In fact NACE MR 0175 mandates much lower hardness. 

In fact the chemical composition is also essential, especially "C".

Could you please post those details. 

Thanks. 

P.Goswami,P.Eng, IWE. 

 

***************************************************************************************************************************************************

 

From: 'Sankaran Sp' via Materials & Welding [mailto:materials-welding@googlegroups.com]
Sent: May 14, 2018 6:09 AM
To: Materials & Welding <materials-welding@googlegroups.com>
Cc: Pradip Goswami <pradip.goswami@gmail.com>; PGoswami <pgoswami@quickclic.net>
Subject: [MW:27842] What is the tempering temperature followed to meet mechanical properties of CA15 castings-reg

 

Dear friends,

We have been procuring ASTM A 217-CA15 castings form foundries. While checking raw material certificate the hardness and mechanical values are not meeting the ASTM A 217 –CA15 standard, our requirement of hardness = 250-300 BHN, T.S = 620-795MPa, YS=450MPa minimum, while enquiring the foundry they told that 260-270 HBW will be achieved but TS & YS could not achieved. Can you help us what is the tempering temperature to be followed to achieve the required hardness & mechanical properties? Kindly do the needful.   

 

 

Regards,

Sankaran.SP

Welding & Metallurgy expert

 

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

Comments

Post a Comment

Popular posts from this blog

Heat tint (temper) colours on stainless steel surfaces heated in air // Heat tint

By Materials & Welding
Introduction The colour formed when stainless steel is heated, either in a furnace application or in the heat affected zone of welds, is dependent on several factors that are related to the oxidation resistance of the steel. The heat tint or temper colour formed is caused by the progressive thickening of the surface oxide layer and so, as temperature is increased, the colours change.   Oxidation resistance of stainless steels However, there are several factors that affect the degree of colour change and so there is no a single table of colour and temperature that represents all cases. The colours formed can only be used as an indication of the temperature to which the steel has been heated. Factors affecting the heat tint colours formed Steel composition The chromium content is the most important single factor affecting oxidation resistance. The higher the chromium, the more heat resistant the steel and so the development of the heat tint colou...
Post a Comment
Read more

[MW:5202] RE: 5200] NDT after PWHT

By Materials & Welding
------------------------------------- Interpretation:  I‑89‑14 Subject:         Section I (1986 Edition, 1987 Addenda), PW‑11,                  NDE Prior to PWHT Date Issued:     December 15, 1988 File:            BC88‑393   Question: Does PW‑11 require that NDE be performed on welds after they have been subjected to the postweld heat treatment required by PW‑39?   Reply: No, unless the conditions described in PW‑11.2.2 exist. ---------------------------------------------- Interpretation:  VIII-1-98-09 Subject:         Section VIII, Division 1 (1995 Edition, 1996 Addenda); NDE                 ...
Post a Comment
Read more

Materails FAQs

By Materials & Welding
Q: What are equivalents for standard Q 235 B (and Q 235 A) for U-channels? (asked by: boris.vielhaber@vait.com) A: DIN Nr. = 2393 T.2, 2394 T.2, EN 10025 W. Nr. DIN 17007 = 1.0038 Design DIN 17006 = RSt 37-2, S235JRG2 (Fe 360 B) Q: What is St DIN 2391 BK material? (asked by: dmcandrews@automaticstamp.com) A: Precision steel tubes, cold-finished/hard. Q: What is C.D.W. Boiler Tube? (asked by: montydude123@yahoo.com) A: Cold Drawn Welded Boiler Tube. Q: WHAT IS W.Nr. 1.4301? PLS TELL US IN EASY LANGUAGUE (asked...
21 comments
Read more