E hoʻokaʻawale i waena o 420 420J1 a me 420J2 mau hiʻohiʻona hana kila kila:
ʻO ka ʻokoʻa nui ma waena o ke kila kila 420J1 a me 420J2
Loaʻa i ka 420J1 kekahi degere o ka pale a me ka pale ʻana i ka corrosion, ka paʻakikī kiʻekiʻe, a ʻo kona kumukūʻai ka haʻahaʻa o nā pōpō kila kila. He kūpono ia no ke kaiapuni hana e pono ai ke kila kila maʻamau.
ʻO 420J2 kāʻei kila kila he hōʻailona o ke kila kila i hana ʻia e like me nā kūlana ʻAmelika ASTM; ʻO ka maʻamau Iapana SUS420J2, kūlana aupuni hou 30Cr13, kūlana aupuni kahiko 3Cr13, code kikohoʻe S42030, maʻamau ʻEulopa 1.4028.
420J1 kila kila: Ma hope o ke kinai ʻana, kiʻekiʻe ka paʻakikī, a maikaʻi ke kūpaʻa corrosion (magnetic). Ma hope o ke kinai ʻana, ʻoi aku ka paʻakikī o 420J2 stainless steel ma mua o 420J1 kila (magnetic).
ʻO ka maʻamau, ʻo ka wela hoʻopau o 420J1 ʻo 980 ~ 1050 ℃. ʻOi aku ka haʻahaʻa o ka paʻakikī o 980 ℃ ka aila hoʻoheheʻe ʻana ma mua o 1050 ℃. ʻO ka paʻakikī ma hope o ka hoʻopau ʻana i ka aila 980 ℃ ʻo HRC45-50, a ʻo ka paʻakikī ma hope o 1050 ℃ aila quenching he 2HRC kiʻekiʻe. Eia nō naʻe, ʻo ka microstructure i loaʻa ma hope o ke kinai ʻana i ka 1050 ℃ he koʻikoʻi a palupalu. Manaʻo ʻia e hoʻohana i ka hoʻomehana 1000 ℃ a me ke kinai ʻana no ka loaʻa ʻana o ka hoʻolālā maikaʻi a me ka paʻakikī.
ʻO ke kila kila 420 / 420J1 / 420J2 Pepa a me nā ʻāpana like ʻole:
| KANAWAI | JIS | WERKSTOFF NR. | BS | AFNOR | SIS | UNS | AISI |
| SS 420 | SUS 420 | 1.4021 | 420S29 | - | 2303 | S42000 | 420 |
| SS 420J1 | SUS 420J1 | 1.4021 | 420S29 | Z20C13 | 2303 | S42010 | 420L |
| SS 420J2 | SUS 420J2 | 1.4028 | 420S37 | Z20C13 | 2304 | S42010 | 420M |
SS420 / 420J1/ 420J2 Pepa, Nā Papa Kemimi Hui (Saky Steel):
| Papa | C | Mn | Si | P | S | Cr | Ni | Mo |
| SUS 420 | 0.15 ka nui | 1.0 ka nui | 1.0 ka nui | 0.040 ka nui | 0.030 ka nui | 12.0-14.0 | - | - |
| SUS 420J1 | 0.16-0.25 | 1.0 ka nui | 1.0 ka nui | 0.040 ka nui | 0.030 ka nui | 12.0-14.0 | - | - |
| SUS 420J2 | 0.26-0.40 | 1.0 ka nui | 1.0 ka nui | 0.040 ka nui | 0.030 ka nui | 12.0-14.0 | - | - |
SS 420 420J1 420J2 Nā Pepa, Nā Papa Mea Mechanical (Saky Steel):
| Papa | Ikaika Makahiki | Ka ikaika hua (0.2%offset) Max | Elongation (i loko o 2 in.) |
| 420 | MPa – 650 | MPa – 450 | 10 % |
| 420J1 | MPa – 640 | MPa – 440 | 20% |
| 420J2 | MPa – 740 | MPa – 540 | 12% |
ʻO ka paʻakikī o 420 series steel ma hope o ka mālama ʻana i ka wela ma kahi o HRC52 ~ 55, a ʻo ka hana ʻana o nā ʻano like ʻole e like me ke kūʻē ʻana i ka pōʻino ʻaʻole maikaʻi loa. Ma muli o ka maʻalahi o ka ʻoki a me ka polish, kūpono ia no ka hana ʻana i nā pahi. Ua kapa ʻia ʻo 420 stainless steel "ʻoki ʻoki" martensitic steel. 420 moʻo kila he maikaʻi 'ole kū'ē ma muli o kona haʻahaʻa kalapona maʻiʻo (carbon maʻiʻo: 0.16 ~ 0.25), no laila, he kila maikai no ka hana ana i ka luʻu mea paahana.
Ka manawa hoʻouna: Jul-07-2020