ʻO Alloy 686 kahi pae hoʻokahi, austenitic Ni-Cr-Mo-W alloy e hāʻawi ana i ke kūpaʻa corrosion koʻikoʻi i nā ʻano o nā kaiapuni koʻikoʻi.ʻO kāna nickel kiʻekiʻe (Ni) a me ka molybdenum (Mo) hāʻawi i ke kūpaʻa maikaʻi i ka hoʻohaʻahaʻa ʻana i nā kūlana, a hāʻawi ka chromium kiʻekiʻe (Cr) i ke kūʻē i ka media oxidizing.ʻO ka Molybdenum (Mo) a me ka tungsten (W) ke kōkua i ka pale ʻana i ka ʻino kūloko e like me ka pitting.ʻO ka hao (Fe) ka mālama pono ʻia e hoʻomaikaʻi i nā waiwai.ʻO ke kalapona haʻahaʻa (C) ke kōkua i ka hoʻemi ʻana i ka ua palena o ka palaoa no ka mālama ʻana i ka corrosion-kūʻē i nā ʻāpana wela o nā hui welded.
Alloy | % | Fe | Cr | Ni | Mo | Mg | W | C | Si | S | P | Ti |
686 | Min. | - | 19.0 | kaulike | 15.0 | - | 3.0 | - | - | - | - | 0.02 |
Max. | 2.0 | 23.0 | 17.0 | 0.75 | 4.4 | 0.01 | 0.08 | 0.02 | 0.04 | 0.25 |
ʻO ka mānoanoa | 8.73 g/cm³ |
Lae hehee | 1338-1380 ℃ |
Kūlana | Ka ikaika tensile Rm N/mm² | Hua ikaika Rp 0. 2N/mm² | ʻO ka lōʻihi E like me % |
Lapaʻau hoʻonā | 810 | 359 | 56 |
Bar/Rod | Uea | Hoʻopaʻa / ʻāwili | Pepa/Pula | Paipu/Tube | Ke kalaiwa ana | Nā mea paʻa |
ASTM B 462, ASTM B 564 ASME SB 564, ASTM B 574 DIN 17752 | ASTM B462 ASTM B564 ASTM B 574 DIN 17752 | ASTM B 575 ASTM B 906 ASME SB 906 DIN 17750 | ASTM B 575 ASTM B 906 DIN 17750 | ASME SB163,ASTM B 619 ASTM B 622 ASTM B 626 ASTM B751 ASTM B 775 ASME SB 829 | ASTM B 462, ASTM B 564 ASME SB 564, ASTM B 574 ASME B 574, DIN 17752 | ASTM F 467/ F 468/ F 468M;SAE/AMS J2295, J2271, J2655, J2280 |
1.Good kū'ē i ka ho'ēmi kūlana;
2.Good kū'ē i ka oxidizing media;
3. Ke kū'ē i ka laulā, pitting a me ka crevice corrosion piʻi.
ʻO ka media hoʻomāinoino i ka hana kemika, ka mālama ʻana i ka pollution, ka hana pulp a me ka pepa, a me nā noi hoʻokele ʻōpala.