Ma ke kahua o ka ʻenekinia kūkulu a me ke kūkulu ʻana, ʻo ke koho ʻana i ka mea kūpono he mea nui ia no ka hōʻoia ʻana i ka palekana, ka lōʻihi o ke ola, a me ke kumukūʻai kūpono. ʻO ke kūlana ʻEulopaEN10210kuhikuhi i nā kūlana hoʻouna loea no nā mea kūkulu i hoʻopau ʻia me ka welanā ʻāpana hakahakai hana ʻia me nā kila kūkulu ʻole-alloy a me nā kila maikaʻi. ʻO S355J0H lāua ʻo S355J2H kekahi o nā papa i kuhikuhi pinepine ʻia. ʻOiai no ka ʻohana hoʻokahi lāua a he nui nā ʻano like ʻole, he mea nui ka hoʻomaopopo ʻana i ko lāua ʻokoʻa nuanced no ke koho pono ʻana i nā mea. Ke ʻeli nei kēia ʻatikala i nā waiwai like ʻole, nā haku mele kemika, nā hana mechanical, a me nā hoʻohana maʻamau o kēia mau papa kila ʻelua.

1. Wehewehe ʻana i ka Hoʻolālā Papa Kila

ʻO ka ʻōnaehana hoʻonohonoho ponoʻī e hāʻawi i nā hōʻailona mua i ko lākou ʻano a me ke kumu. Wahi a EN 10027-1, ua hoʻokaʻawale ʻia nā inoa penei:

S: Kū ia no "Kila Kūkulu."

355: Hōʻike i ka ikaika haʻahaʻa loa (ma megapascals, MPa) no nā mānoanoa a hiki i ka 16 mm. He ʻano like kēia ma waena o nā papa ʻelua.

J0 / J2: Hōʻike kēia ʻāpana i ka paʻakikī o ka hopena i koi ʻia. ʻO ke ʻano o "J0" pono ka mea e hoʻokō i ka ikehu hopena liʻiliʻi loa o 27 Joules ma 0°C. Ke kauoha nei ʻo "J2" i ka ikehu hopena liʻiliʻi like o 27 Joules, akā ma ka mahana haʻahaʻa o -20°C.

H: Hōʻike i nā "ʻĀpana Hollow," ʻo ia hoʻi nā mea i hoʻopau ʻia me ka wela, e like me ka mea i wehewehe ʻia e ke kūlana EN10210.

2. Hoʻohuihui Kemika: Nā ʻokoʻa liʻiliʻi me ka hopena koʻikoʻi

ʻO S355J0H a me S355J2H nā kila kūkulu i loaʻa ka manganese i ʻike ʻia no ko lākou hiki ke hoʻopili maikaʻi ʻia. Ua like loa nā koi hoʻohuihui kemika e like me EN10210, akā aia nā ʻokoʻa koʻikoʻi i nā palena i ʻae ʻia no ka sulfur (S), phosphorus (P), a me ka hana deoxidation, ka mea e hoʻopili pololei i ka maʻemaʻe o ke kila a me ka hana haʻahaʻa.

Mea Kemika	S355J0H (Maʻamau % max)	S355J2H (Maʻamau % max)	Ka Manaʻo o ka ʻOkoʻa
Kalapona (C)	≤ 0.22	≤ 0.22	ʻAno like; hōʻoiaʻiʻo i ka ikaika maikaʻi a me ka hiki ke hoʻopili ʻia.
Manganese (Mn)	≤ 1.60	≤ 1.60	ʻAno like; kōkua i ka ikaika.
Silika (Si)	≤ 0.55	≤ 0.55	ʻAno like; hana ma ke ʻano he deoxidizer.
ʻO ka phosphorus (P)	≤ 0.035	≤ 0.030	He palena paʻa ko J2H, e hōʻemi ana i ka brittleness.
Sulfur (S)	≤ 0.035	≤ 0.030	He palena paʻa ko J2H, e hoʻomaikaʻi ana i ka maʻemaʻe a me ka paʻakikī.
Naikokene (N)	≤ 0.009	-	Ua pepehi piha ʻia ʻo J2H (mālama ʻia ka palaoa maikaʻi), e hōʻole ana i ka pono no ka waiwai max N.

ʻO ke kumu nui, ʻo ia ka pono o S355J2H i ka kaohi koʻikoʻi o nā mea haumia e like me ka phosphorus a me ka sulfur. ʻO ka hopena, he kila maʻemaʻe me kahi microstructure like, he mea nui ia no ka hoʻokō ʻana i ka paʻa pono ma nā mahana ma lalo o ka zero. Eia kekahi, ua hoʻokaʻawale ʻia ʻo S355J2H ma ke ʻano he kila "FF" (Fully killed), ʻo ia hoʻi, ua mālama ʻia me nā mea e like me ka alumini e hana i kahi ʻano palaoa maikaʻi, kahi e hoʻomaikaʻi maoli ai i ka paʻa. ʻO S355J0H ma ke ʻano maʻamau he "FN" (ʻAʻole ʻae ʻia ke kila Rimming), ʻo ia hoʻi ka liʻiliʻi o ke koʻikoʻi.

3. Nā Waiwai Mekanika: ʻO ka ʻokoʻa wehewehe i ka paʻakikī

E like me ka hōʻike ʻana o ka hoʻolālā papa, ʻaneʻane like nā waiwai mechanical, ʻoiai ka ikaika yield a me ka tensile, no nā papa ʻelua. ʻO ka mea ʻokoʻa e wehewehe ana i kā lākou hana ma lalo o ka hoʻouka ʻana i ka hopena ma nā mahana like ʻole.

Waiwai Mīkini	S355J0H	S355J2H
Ikaika Hua (ReH)	≥ 355 MPa (t ≤ 16mm)	≥ 355 MPa (t ≤ 16mm)
Ikaika Hoʻopaʻa (Rm)	470 - 630 MPa (t ≤ 3mm)	470 - 630 MPa (t ≤ 3mm)
Hoʻolōʻihi (A)	≥ 22% (longitudinal)	≥ 22% (longitudinal)
Ikehu hopena (KV)	≥ 27 J @ 0°C	≥ 27 J @ -20°C

ʻO kēia ʻokoʻa i ka mahana hoʻāʻo hopena ka mea nui loa i ke koho ʻana ma waena o nā mea ʻelua. ʻOiai ua lawa ka paʻakikī o S355J0H no ka hapa nui o nā noi o loko a me waho, ua hana ʻia ʻo S355J2H e kūʻē i ka haki palupalu i nā wahi anuanu.

4. Nā Noi a me nā Kūlana Koho

ʻO ke koho ma waena o S355J0H a me S355J2H e hoʻoholo nui ʻia e ka mahana lawelawe haʻahaʻa loa o ka hale a me ke koʻikoʻi o ka noi.

S355J0H: Ke Koho Kūpono no ke Kumukūʻai no nā Aniau Paʻa

Nā Hoʻohana Maʻamau: Ke kūkulu ʻana i nā hale maʻamau, nā kahua pāʻani, nā kahua, a me nā ʻāpana mīkini ma nā wahi me nā aniau mālie a mehana paha kahi e hāʻule pinepine ai ka mahana ma lalo o 0°C, inā ʻaʻole loa.

Pōmaikaʻi: Hāʻawi ia i ka ikaika maikaʻi loa a me ka hiki ke hoʻopili ʻia ma kahi kumukūʻai haʻahaʻa ma mua o kona hoa J2, e lilo ia i koho waiwai no nā papahana kahi ʻaʻole ka hopena o ka mahana haʻahaʻa ke kumu nui.

S355J2H: Ke Koho Palekana no nā Kaiapuni Koi a Anu

Nā Hoʻohana Maʻamau: Nā hale ma waho o ke kai, nā alahaka ma nā wahi mauna a i ʻole ka ʻākau, nā hale mālama anu, nā hale kiaʻi makani, a me kekahi mea kūkulu i kau ʻia ma lalo o ka hoʻouka ikaika i nā kūlana haʻahaʻa.

Pōmaikaʻi: ʻO kāna hana hopena i hōʻoia ʻia ma -20°C e hāʻawi i kahi palena palekana koʻikoʻi e kūʻē i ka haki palupalu weliweli i nā aniau anuanu. ʻO ke ʻano o ka palaoa maikaʻi e hāʻawi iki i ka hoʻomaikaʻi ʻana i ka weldability a me nā waiwai mānoanoa.

Hopena

I ka hōʻuluʻulu manaʻo, ʻeluaEN10210 S355J0Ha ʻo S355J2H he mau kila ʻāpana hakahaka kiʻekiʻe, i hoʻopau ʻia me ka wela e hāʻawi ana i ka ikaika hua liʻiliʻi o 355 MPa. Loaʻa iā lākou kahi kumu kemika like a me nā koi tensile a me ka ikaika hua like. Eia naʻe, ʻaʻole hiki ke hoʻololi ʻia i nā kūlana āpau. Hoʻokaʻawale ʻo S355J2H iā ia iho ma o ka kaohi koʻikoʻi o nā haumia (P & S) a me kahi ʻano palaoa maikaʻi i pepehi piha ʻia, e hōʻoiaʻiʻo ana i ka paʻakikī hopena liʻiliʻi o 27 Joules ma -20°C, hoʻohālikelike ʻia me 27 Joules o S355J0H ma 0°C. No nā papahana i nā aniau anuanu a i ʻole nā ​​​​mea e koi ana i kahi palena palekana kiʻekiʻe e kūʻē i ka haki brittle, ʻo S355J2H ke koho pono, ʻoiai ʻoi aku ka pipiʻi. No nā noi maʻamau ma nā wahi mahana, ʻo S355J0H kahi koho hilinaʻi loa a kūpono hoʻi.