What is different beween 15Mo3 and 16Mo3 steel?

What is different beween 15Mo3 and 16Mo3 steel?

15Mo3 and 16Mo3 steels are boiler steel,they can be used for boiler or pressure vessel.but 15Mo3 steel under DIN 17155 standard,16Mo3 steel under EN10028 standard.and 15Mo3 steel is equivalent to GB5310,ASME SA210, ASME SA213, DIN17175.

15Mo3 steel Chemical Composition:

Grade C. max Mn. S. N Cu Si. P. Cr. Ni. Mo.
15Mo3 0.12- 0.2 0.40- 0.90 0.01 0.012 0.30 0.35 0.025 0.30 0.30 0.25- 0.35

16Mo3 steel Chemical Composition

Grade C Si Mn P S Cr Mo Ni Nb Ti V Al N Cu
16Mo3 0.12/0.20 0.35 0.40/0.90 0.025 0.010 0.030 0.25/0.35 0.30 0.012 0.30

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