Need Help to define 42CrMo4 HH TQ+T
Need Help to define 42CrMo4 HH TQ+T
(OP)
Please provide a definition for the specification 42CrMo4 HH TQ+T. What does HH and TQ+T specifically means.
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Need Help to define 42CrMo4 HH TQ+T
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Need Help to define 42CrMo4 HH TQ+TNeed Help to define 42CrMo4 HH TQ+T(OP)
Please provide a definition for the specification 42CrMo4 HH TQ+T. What does HH and TQ+T specifically means. Red Flag SubmittedThank you for helping keep Eng-Tips Forums free from inappropriate posts. Reply To This ThreadPosting in the Eng-Tips forums is a member-only feature.Click Here to join Eng-Tips and talk with other members! |
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RE: Need Help to define 42CrMo4 HH TQ+T
Regards,
Cory
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RE: Need Help to define 42CrMo4 HH TQ+T
You need to obtain the standard EN 10083-1 Quenched and tempered steels - Technical delivery conditions for special steels. This standard defines the requirements for grade 42CrMo4 +HH +QT. The +HH designation means that the grade has restricted hardenability (see Table 7), and as CoryPad already mentioned, the +QT means quenched and tempered. Table 12 of this standard provides some guidance values for heat treating parameters, which for this grade are 820-860 C for the austenitizing temperature, and 540-680 C for the tempering temperature. Oil or water can be used for quenching depending on the exact hardness, depth of hardening, etc. DIN EN 10083-1 or BS EN 10083-1 are available from Global Engineering Documents using the following link:
http://global.ihs.com
RE: Need Help to define 42CrMo4 HH TQ+T
These should clear up that pesky HH:
CODE
http://www.edelstahl-witten-krefeld.de/upload/binarydata_ewkinterd4cms/1539/br_verguetungsst_thyrofort_en.pdf
http://www.novacciai.it/pdf/quenching_and_tempering.pdf
http://www.ovako.com/Data/r3116/v1/Data_sheet_Imatra_42CrMo4.pdf
http://alruqee.net/rtc_final/My%20Documents/RTC%20Web&CD/METAL_ALLOYS/low%20alloyed%20steel/4140.pdf
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