A789 UNS S31803 a me URT S32205ʻElua mau helu Duplex i hoʻohana pinepineʻia ma nāʻano hana maʻamau. Uaʻikeʻia kēia mau kīʻaha duplex s3180. ʻO A789 kahi kiko'ī e uhi ana i nā'āpana seamless a me nā tubes i hanaʻia mai Duplex Inselless Steel.
Loaʻa iā Alloy 825 Bolts i nā waiwai mechanical maikaʻi loa mai nā mahana haʻahaʻa i nā mahana kiʻekiʻe e like me ka 1000/Ãf. Nā loli hoʻololiʻo Microstructural e hōʻemi nui ai i ka ductility a me ka hopena hopena i ka wā e hoʻohanaʻia ana i nā mahana ma luna o 1000.f.
ʻO ka inctoel 600 mau pahu e pili ana i ka Nicokal ʻO ka inconil 600 mau pahu e pili ana i ka maloʻo maloʻo cl2 a me nā mea'ē aʻe e like me nāʻano likeʻole a me nā kiʻekiʻe kiʻekiʻe. ʻO ka alloy 600 bar he Nickel-chromium alloy me ka pale o ka oxidation maikaʻi a me ke kū'ēʻana i ka wai e hoʻonui ai i nā wela.