Different material?
Different material?
(OP)
Hi there,
I was told by my supplier that the below samples A & B are of the same material JIS SCM415 (Chrome Molydenum Steel), I really have my doubt. Can anyone advise.
Below id the hardness data (HV 0.3)
depth A B
0.05 762 738
0.1 746 744
0.2 645 755
0.3 532 758
0.4 463 712
0.5 438 684
0.6 420 644
0.7 410 621
0.8 405 570
0.9 400 527
core 385 516
According to them, both samples are different by the heat treatment process. But I really doubt that with 0.15% C, the core hardness can go up to >500 HV.
I was told by my supplier that the below samples A & B are of the same material JIS SCM415 (Chrome Molydenum Steel), I really have my doubt. Can anyone advise.
Below id the hardness data (HV 0.3)
depth A B
0.05 762 738
0.1 746 744
0.2 645 755
0.3 532 758
0.4 463 712
0.5 438 684
0.6 420 644
0.7 410 621
0.8 405 570
0.9 400 527
core 385 516
According to them, both samples are different by the heat treatment process. But I really doubt that with 0.15% C, the core hardness can go up to >500 HV.
Best regards,
ct





RE: Different material?
you are probably right.
Why not asking the supplier to get you
an independent chemical analysis just of C,
or an X-Ray fluorescence test of both samples?
The answer should settle the question.
Mix up of materials can occur.
Regards,
http://www.welding-advisers.com/
RE: Different material?
RE: Different material?
But I think I gotta go for chemical analysis, that would give me the answer right away.
I agree that 500HV is achievable by SCM415, but to control the part to this extent doesn't seem to be practical, at least from economic stand point.
Best regards,
ct