Will nickel in low alloy still cause quenching crack
Will nickel in low alloy still cause quenching crack
(OP)
Hi.
I experience a major reject in my company in low alloy steel due to water quenching crack. The nickel content at that time was 2.2%.
After I reduced the nickel content to 1.7%, the quenching crack problem solve.
Is there any reason too high nickel in the low alloy steel will lead to quenching crack?
Regards
I experience a major reject in my company in low alloy steel due to water quenching crack. The nickel content at that time was 2.2%.
After I reduced the nickel content to 1.7%, the quenching crack problem solve.
Is there any reason too high nickel in the low alloy steel will lead to quenching crack?
Regards





RE: Will nickel in low alloy still cause quenching crack
The tendency for increasing amounts of cracking correlates well with decreasing Ms (martensite start) temperature and increasing carbon equivalent (C.E.). Increasing the amount of nickel decreases the Ms temperature and raises the C.E., so quench cracking is more likely in steel alloys with higher nickel levels.
RE: Will nickel in low alloy still cause quenching crack
ASTM A 255 is a useful document to read to understand the influence of the different alloying elements on hardenability.
RE: Will nickel in low alloy still cause quenching crack