Obere igwe anaghị agba nchara
Asme B36.19m bụ nkọwapụta ọkọlọtọ maka ọkpọ nchara, nke na-akọwapụta akụkụ, nnabata, na ọrụ na-achọ ihe abụọ na-enweghị atụ.
Ngwa nchara nchara 304 nke nwere nguzogide corrosion n'ọtụtụ ebe obibi dị iche iche na mgbe kọntaktị na mgbasa ozi dị iche iche corrosive. Itinye na corvice corrosion nwere ike ime na gburugburu nwere chlorides. Ihe mgbawa corrosion nwere ike ime na ọnọdụ okpomọkụ karịa 600c. Igwe nchara nchara 304 nwere ezigbo nguzogide na oxidanti na mmekorita ruru 870¡ã¡ããÃc. Agbanyeghị, iji ya na-aga n'ihu na 425-860¡ã ma ọ bụrụ na achọrọ nguzogide na mmiri. N'ime ihe atụ a 304l na-atụ aro n'ihi nguzobe nke carbide. Grally nchara 1.4301 \ / 304 kwekọrọ: 304s15, 304s16, 304s31 na En58e.