hat
5. bon rezistans pou stress kowozyon par, 690 gen anwo nan syèl la compensation eklatman fòs depi ke li limite kabòn pi kontan ak ble taille, se konsa yo rekòmande pou itilize pou pi wo pase 500Anviwònman ℃.
eng
5.Good resistance to stress corrosion cracking, 690 have high creep rupture strength since it limits the carbon content and grain size, so recommend to use for above 500℃ environment.