He aha ka ʻokoʻa ma waena o 304 a me 316 kila kila?

 

ʻO ka ʻokoʻa koʻikoʻi ma waena o 304 a me 316 stainless steel e hoʻokaʻawale iā lākou ʻo ka hoʻohui ʻana o ka molybdenum. Hoʻonui nui kēia huila i ka pale ʻana i ka corrosion, ʻoi aku ka nui o ka paʻakai a i ʻole ka chloride i ʻike ʻia. Aia ka molybdenum 316 kila kila, akā ʻaʻole 304.

ʻO 304 a me 316 ke kila kila ʻelua o nā ʻano mea maʻamau a maʻalahi o ke kila kila. ʻOiai kaʻana like lākou i nā mea like,
aia nā ʻokoʻa koʻikoʻi i kā lākou haku mele ʻana, pale ʻana i ka corrosion, a me nā noi.

1. Huina Kemika:

• 304 kila kila:
  • Chromium:18-20%
  • Nikela:8-10.5%
  • Manganese:≤2%
  • kalapona:≤0.08%
• 316 kila kila:
  • Chromium:16-18%
  • Nikela:10-14%
  • Molybdenum:2-3%
  • Manganese:≤2%
  • kalapona:≤0.08%

ʻOkoʻa kī:Loaʻa i ka 316 stainless steel ka 2-3% molybdenum, ʻaʻole i loaʻa ma 304. ʻO kēia hoʻohui e hoʻomaikaʻi i ka pale ʻana i ka corrosion, ʻoi aku hoʻi i nā chlorides a me nā mea hoʻoheheʻe ʻoihana ʻē aʻe.

2.Paʻa ʻino:

• 304 kila kila:
  • Hāʻawi ia i ke kūpaʻa corrosion maikaʻi i ka hapa nui o nā kaiapuni, ʻoi aku ka wai non-chlorinated.
• 316 kila kila:
  • ʻOi aku ka maikaʻi o ka pale ʻana i ka corrosion i hoʻohālikelike ʻia me 304, ʻoi aku hoʻi i nā wahi paʻakikī me ka ʻike ʻana i ka wai paʻakai, chlorides, a me nā waikawa.

ʻOkoʻa kī:316 ʻoi aku ke kūpaʻa o ke kila kila i ka corrosion, no laila kūpono ia no ke kai, kemika, a me nā wahi ʻino ʻē aʻe.

3. Nā Pono Mechanical:

• 304 kila kila:
  • Ikaika U'i: ~505 MPa (73 ksi)
  • Ka ikaika o ka hua: ~215 MPa (31 ksi)
• 316 kila kila:
  • Ikaika U'i: ~515 MPa (75 ksi)
  • Ka ikaika o ka hua: ~290 MPa (42 ksi)

ʻOkoʻa kī:He ʻoi aku ka kiʻekiʻe o ka tensile a hāʻawi i ka ikaika o 316, akā liʻiliʻi ka ʻokoʻa.

4. Nā noi:

• 304 kila kila:
  • Hoʻohana maʻamau i nā lako kīhini, nā mea hana hale, nā ʻoki kaʻa, nā noi hoʻolālā, a me nā ipu ʻoihana.
• 316 kila kila:
  • Manaʻo ʻia no nā kaiapuni e koi ana i ka pale ʻana i ka corrosion i hoʻonui ʻia, e like me nā lako kai, nā mea hana kemika, nā lāʻau lapaʻau a me nā mea lapaʻau, a me nā kaiapuni kiʻekiʻe-salinity.

ʻOkoʻa kī:Hoʻohana ʻia ʻo 316 kahi e koi ʻia ai ke kūpaʻa ʻoi aku ka maikaʻi, ʻoi aku ka maikaʻi ma nā wahi ʻino.

5. Uku:

• 304 kila kila:
  • ʻO ka maʻamau, emi ke kumu kūʻai ma muli o ka nele o ka molybdenum.
• 316 kila kila:
  • ʻOi aku ka pipiʻi ma muli o ka hoʻohui ʻana o ka molybdenum, ka mea e hoʻomaikaʻi ai i ka pale ʻana i ka corrosion akā hoʻonui i ke kumu kūʻai.

Hōʻuluʻulu manaʻo:

• 304 Ke kila kilahe kila kila kila maikaʻi me ka pale ʻana i ka corrosion maikaʻi, hoʻohana mau ʻia i nā kaiapuni kahi haʻahaʻa o ka pōʻino.
• 316 Ke kila kilaʻoi aku ka maikaʻi o ka pale ʻana i ka corrosion, ʻoi aku ka maikaʻi o ka chlorides a me nā mea ʻino ʻē aʻe, no laila kūpono ia no nā kaiapuni koi.

ʻO ke koho ʻana ma waena o nā mea ʻelua e hilinaʻi pinepine i nā kūlana kaiapuni kikoʻī a me ke kiʻekiʻe o ka pale ʻana i ka corrosion.