I roto i te ao o te hangarau hanganga me te hanga, he mea nui te whiriwhiri i te rauemi tika hei whakarite i te haumaru, te roa o te mahi, me te whai hua o te utu. Ko te paerewa PākehāEN10210e whakaatu ana i ngā tikanga tuku hangarau mō ngā hanganga kua oti te whakamahanangā wāhanga tuwherahe mea hanga ki ngā maitai hanganga kore-koranu me ngā maitai hanganga-pai. Ko ētahi o ngā momo e tino tohua ana ko te S355J0H me te S355J2H. Ahakoa nō te whānau kotahi rāua, ā, he maha ngā āhuatanga, he mea nui te mārama ki ō rāua rerekētanga rerekē mō te whiriwhiri rauemi tino pai. Ka rukuhia e tēnei tuhinga ngā āhuatanga motuhake, ngā hanganga matū, ngā mahi miihini, me ngā whakamahinga noa o ēnei momo maitai e rua.

1. Te Wetewete i te Tohu Paerewa Rino

Ko te pūnaha tohu tonu e whakarato ana i ngā tohu tuatahi ki tō rātou tuakiri me te kaupapa. E ai ki te EN 10027-1, kua wehea ngā ingoa penei:

S: Ko tōna tikanga he "Hanganga Rino".

355: E tohu ana i te kaha whakaputa iti rawa (i roto i ngā megapascal, MPa) mō ngā matotoru tae atu ki te 16 mm. He āhuatanga ōrite tēnei i waenga i ngā taumata e rua.

J0 / J2: Ko tēnei wāhanga e tohu ana i te pakari pānga e hiahiatia ana. Ko te tikanga o "J0" me eke te rauemi ki te kaha pānga iti rawa o te 27 Joules i te 0°C. Ko te tikanga o "J2" ko te kaha pānga iti rawa o te 27 Joules, engari i te pāmahana iti iho o te -20°C.

H: E tohu ana i ngā "Wāhanga Kowhao", inā koa ko ērā kua oti te whakaoti wera, e ai ki te paerewa EN10210.

2. Te Hanganga Matū: Ngā Rerekētanga Iti me te Pānga Nui

He maitai hanganga kei roto i te konupora te S355J0H me te S355J2H, e mōhiotia ana mō tō rātou kaha ki te whakarewa. He tino ōrite ngā whakaritenga hanganga matū e ai ki te EN10210, engari he rerekētanga nui kei roto i ngā rohe e whakaaetia ana mō te whanariki (S), te whākawa (P), me te mahi tango waikura, e pā tika ana ki te ma o te maitai me te mahi pāmahana iti.

Huānga Matū	S355J0H (% mōrahi noa)	S355J2H (% mōrahi noa)	Te Pānga o te Rerekētanga
Waro (C)	≤ 0.22	≤ 0.22	He rite tonu; ka whakarite kia pai te kaha me te ngāwari ki te whakarewa.
Manganēhi (Mn)	≤ 1.60	≤ 1.60	He rite; he whai wāhi ki te kaha.
Hiraka (Si)	≤ 0.55	≤ 0.55	He rite; he mahi hei tango i te waikura.
Whēkau (P)	≤ 0.035	≤ 0.030	He kikī ake te rohe o J2H, e whakaiti ana i te pakarukaru.
Whānariki (S)	≤ 0.035	≤ 0.030	He kikī ake te rohe o J2H, e whakapai ake ana i te ma me te pakari.
Hauota (N)	≤ 0.009	-	Ko te tikanga ka patua katoatia te J2H (ka tukatukahia ki te witi pai), ka whakakorea te hiahia mō te uara N mōrahi.

Ko te mea nui, me kaha ake te whakahaere i ngā poke pērā i te whākawa me te whanariki mō te S355J2H. Ka hua ake he maitai ma ake, he hanganga iti ake te ōrite, he mea nui tēnei mō te whakatutuki i te pakari pono i ngā pāmahana i raro i te kore. Hei tāpiri, ka whakarōpūtia te S355J2H hei maitai "FF" (Kua mate katoa), arā, ka rongoatia ki ngā huānga pērā i te konumohe hei hanga i tētahi hanganga pai-kiko, e whakapai ake ana i te pakari. Ko te S355J0H he "FN" (Kāore e whakaaetia te rino whakarara), he iti ake te pakari.

3. Ngā Āhuatanga Ā-Mīhini: Te Rerekētanga Matua o te Pakari

E ai ki te tohu o te tohu, he rite tonu ngā āhuatanga ā-pūkaha, inā koa te kaha o te kume me te kaha o te kume, mō ngā tohu e rua. Ko te mea e rerekē ai ko tō rātou mahi i raro i te kawenga pānga i ngā pāmahana rerekē.

Āhuatanga Mīhini	S355J0H	S355J2H
Te Kaha Hua (ReH)	≥ 355 MPa (t ≤ 16mm)	≥ 355 MPa (t ≤ 16mm)
Kaha Kume (Rm)	470 - 630 MPa (t ≤ 3mm)	470 - 630 MPa (t ≤ 3mm)
Te Roa (A)	≥ 22% (whakaroa)	≥ 22% (whakaroa)
Pūngao Pānga (KV)	≥ 27 J @ 0°C	≥ 27 J @ -20°C

Ko tēnei rerekētanga o te pāmahana whakamātautau pānga te mea tino nui hei whiriwhiri i waenga i ngā mea e rua. Ahakoa he pakari te S355J0H mō te nuinga o ngā tono o roto, o waho hoki, he mea hanga te S355J2H kia ātete ki te pakarukaru i ngā taiao makariri.

4. Ngā Tono me ngā Paearu Kōwhiri

Ko te kōwhiringa i waenga i te S355J0H me te S355J2H e whakawhirinaki ana ki te pāmahana ratonga iti rawa o te hanganga me te hiranga o te whakamahinga.

S355J0H: Te Kōwhiringa Whai Hua mō ngā Āhuarangi Mārie

Ngā Whakamahinga Noa: Te hanga whare whānui, ngā papa tākaro, ngā papaaho, me ngā wāhanga mīhini i ngā rohe he āhuarangi ngawari, he āhuarangi marino rānei, ā, onge noa iho te heke o te pāmahana i raro i te 0°C, mēnā kāore rawa.

Painga: He tino kaha, he ngāwari hoki te whakarewa, engari he iti ake te utu i tōna hoa J2, ā, he kōwhiringa ōhanga tēnei mō ngā kaupapa kāore e aro nui ana ki te pānga o te pāmahana iti.

S355J2H: Te Kōwhiringa Haumaru mō ngā Taiao Uaua me te Matao

Ngā Whakamahinga Noa: Ngā hanganga takutai moana, ngā piriti i ngā rohe maunga, i ngā rohe raki rānei, ngā whare rokiroki matao, ngā pourewa hau, me tetahi atu waahanga hanganga e pāngia ana e te kawenga hihiri i ngā āhuatanga pāmahana iti.

Painga: Ko tōna kaha pānga kua whakamanahia i te -20°C e whakarato ana i te tawhē haumaru nui ki te pakaru pakarukaru kino i ngā āhuarangi makariri. He iti hoki te pānga o te hanganga o te kōpaka pai ki te whakapai ake i te āheinga whakarewa me ngā āhuatanga matotoru.

Whakamutunga

Hei whakarāpopototanga, e ruaEN10210 S355J0Hme te S355J2H he maitai wāhanga tuwhera kounga teitei, kua oti te whakamahana, e tuku ana i te kaha whakaputa iti rawa o te 355 MPa. He rite tonu te pūtake matū me ngā whakaritenga kaha kume me te kaha whakaputa. Heoi, kāore e taea te whakawhiti i ngā āhuatanga katoa. Ka wehewehea te S355J2H mā te whakahaere pakari ake i ngā poke (P me te S) me te hanganga pai rawa atu, e kī taurangi ana i te kaha pānga iti rawa o te 27 Joules i te -20°C, ki te whakaritea ki te 27 Joules a te S355J0H i te 0°C. Mō ngā kaupapa i roto i ngā āhuarangi makariri, i ngā mea rānei e hiahia ana kia nui ake te haumaru ki te pakarukaru, ko te S355J2H te kōwhiringa e tika ana, ahakoa he iti ake te utu. Mō ngā tono whānui i roto i ngā rohe mahana, he kōwhiringa pono tonu te S355J0H, ā, he kōwhiringa utu-pai hoki.