I-S31803 yinkqubo yangaphakathi ye-ofisi (engachazwanga) yentsimbi ye-huppex engenasibala. Inkqubo engekhoyo yenziwa ngamaqela orhwebo amaninzi ngo-1970 ukuya kunciphisa ukudideka xa i-arey efanayo ibizwa ngokuba ziindawo ezahlukeneyo, kunye ne-vice. Isinyithi ngasinye simelwe yileta elandelwa ngamanani amahlanu, apho ileta imele inguqu yentsimbi, i.e. s ngenxa yentsimbi engenasibala.
Ngeendlela zokugcina amaphepha ezifuna amabanga aphantsi angeniselo ezingenalo ukumelana nokungakhathali ngokwaneleyo. Ngokusekwe kumxholo we-chromium wama-22%, ane-Eustenatic edityanisiweyo: Ubume bobuchule obunikezela ngamandla amakhulu, ukumelana nokucoca kunye nokusebenza kweendleko.
I-S31803 (i-ASTM F51) igcinwe ikakhulu i-S32205 (1.4462, i-ASTM F60). Oku kubonisa umnqweno wabo wokukhulisa iipropathi zohlobo lwe-Alfay, enkosi kuphuhliso lwenkqubo yokutsala i-AOD, evumela ukulawulwa kokuthathwa komgangatho. Ukongeza, ivumela ukuphembelela inqanaba longezelelo lwe-nitrogen kunokuba ubekhona njengendawo engemva. Ke ngoko, amabanga aphezulu aphakamileyo afuna ukwandisa umxholo we-chromium (CR), iMolybDum (Molybdenum (MolyBDenum (MolyBDenum (Mo) kunye ne-nitrogen (n).