Steel grades A516 GR.70 steel plate and A516 GR.60 steel plate are both in steel specification ASTM A516/A516M (This standard specification for pressure vessel plates,carbon steel,for moderate and low temperature service)

In mechanical property,A516 GR.70 steel plate is most common used in moderate and low temperature boilers.It owned a higher tensile strength within 485-620Mpa and yield strength above 260Mpa.However,steel grade A516 GR.60 owned a lower tensile strength than A516 Grr.70 within 415-550Mpa and minimum yield strength at 220Mpa.

In chemical composition,A516 gr.70 steel plate has a more range in Carbon contains than A516 gr.60 steel plate.So A516 gr.70 steel plate owned a higher strength in steel property.

General additional requirements for steel grades A516Gr70 and A516Gr60 shall be conform to ASTM specification A20/A20M.