ʻO P235TR1 kahi mea paipu kila nona ka mea hoʻohui kemika e hoʻokō maʻamau me ka maʻamau EN 10216-1.mea kanu kemika, moku, hana paipu a no ka ma'amauhana ʻenekinia.

E like me ka maʻamau, ʻo ka hui kemika o P235TR1 e loaʻa i ke kalapona (C) a hiki i ka 0.16%, ka ʻike silicon (Si) a hiki i ka 0.35%, ka ʻike manganese (Mn) ma waena o 0.30-1.20%, ka phosphorus (P) a me ka sulfur (S). ). ) ʻo ka ʻike he 0.025% ka nui. Eia kekahi, e like me nā koi maʻamau, hiki i ka haku mele ʻana o P235TR1 ke loaʻa i nā ʻano mea e like me chromium (Cr), copper (Cu), nickel (Ni) a me niobium (Nb). Hiki i ka hoʻomalu ʻana i kēia mau mea hoʻohui kemika ke hōʻoia i ka loaʻa ʻana o nā paipu kila P235TR1 i nā waiwai mechanical kūpono a me ke kūpaʻa ʻana i ka corrosion, e kūpono ana ia no ka hoʻohana ʻana i kekahi mau noi ʻoihana kikoʻī.

Mai kahi hiʻohiʻona hoʻohui kemika, kōkua ka ʻike kalapona haʻahaʻa o P235TR1 i ka hoʻomaikaʻi ʻana i kona hiki ke weld a me ka hiki ke kaʻina hana, a ʻo kāna ʻike silika a me ka manganese e kōkua i ka hoʻomaikaʻi ʻana i kona ikaika a me ka pale ʻana. Eia kekahi, pono e hoʻomalu ʻia ka phosphorus a me ka sulfur ma nā pae haʻahaʻa e hōʻoia i ka maʻemaʻe o nā mea a me ka hana. ʻO ka loaʻa ʻana o nā mea trace e like me ka chromium, copper, nickel a me ka niobium hiki ke loaʻa ka hopena i kekahi mau waiwai o nā paipu kila, e like me ke kūpaʻa wela a i ʻole ke kūpaʻa corrosion.

Ma waho aʻe o ka hoʻohui kemika, ke kaʻina hana, nā ʻano hana wela a me nā hōʻailona hana kino ʻē aʻe o ka paipu kila P235TR1 kekahi mau mea nui e pili ana i kāna hana hope. Ma keʻano laulā, ʻo ka hui kemika o ka paipu kila P235TR1 kekahi o nā kumu nui e hōʻoia i ka hoʻokō ʻana i nā koi o nā kūlana kūpono a hiki ke hoʻokō i nā kumu ʻenehana kikoʻī.