ʻO ka make apo ka mea maʻamau i hana ʻia me ke kila kila kalapona, ke kila kila kila, a me ke kila kila ma o ka hana ʻana, ka ʻoki ʻana, ka ʻeli ʻana, ka mālama wela, a me nā kaʻina hana ʻē aʻe. ʻO nā mea i hoʻohana ʻia i loko o ka make apo a me kēlā me kēia kaʻina hana he hopena pololei i kona ola lawelawe, ka maikaʻi o ka granulation a me ka hopena. ʻO ke kila kila kalapona ka mea nui o ke kila 45, nona ka paʻakikī mālama wela maʻamau ʻo HRC45 ~ 50, a ʻo kona kūpaʻa ʻaʻahu a me ke kūpaʻa ʻana i ka palaho he maikaʻi ʻole, kahi i hoʻopau ʻia; ʻO ke kila kila ka mea nui o ka mea 20CrMnTi, kahi i hoʻopili ʻia i ka mālama wela ʻili e like me ka carburization ʻili. ʻOi aku ka paʻakikī o ka mālama ʻana ma luna o HRC50 a he mau waiwai mechanical piha maikaʻi. ʻO ka ʻōmole apo i hana ʻia me kēia mea he ikaika kiʻekiʻe a ʻoi aku ka maikaʻi o ke kūpaʻa ʻaʻahu ma mua o ke kila 45, akā ʻo kona hemahema ka pale ʻana i ka palaho maikaʻi ʻole. ʻOiai he haʻahaʻa ke kumukūʻai o kahi ʻōmole apo hoʻokahi, ʻoi aku ke kiʻekiʻe o ke kumukūʻai hana o nā tona o nā mea ma mua o ka ʻōmole apo kila kila i ka wā e hoʻohana ʻia ai, a ua hoʻopau ʻia i kēia manawa; ʻO ka mea kila kila he 4Cr13 nui. Maikaʻi ka paʻakikī a me ka paʻakikī o kēia mau mea. ʻO ke ʻano o ka mālama wela ʻana he puhi ʻana ia, ʻoi aku ka paʻakikī ma mua o HRC50 a he kūpaʻa maikaʻi kona i ka ʻaʻahu a me ke kūpaʻa i ka pala. He lōʻihi ke ola lawelawe, a he haʻahaʻa ke kumukūʻai o ke apo apo no kēlā me kēia tona.
No ka make apo o ka mea 4Cr13, pono e hoʻomaka kona kumu maikaʻi mai ka ingot: ʻo ka hoʻohui kemika (hapa nui%) o ka make apo o ke kila 4Cr13: ʻo C content ≤ 0.36 ~ 0.45, Cr content 12 ~ 14, Si content ≤ 0.60, Mn content ≤ 0.80, S content ≤ 0.03, P content ≤ 0.035; I ka hoʻohana maoli ʻana, ʻoi aku ka pōkole o ke ola lawelawe o ka make apo me kahi 12% Cr content ma mua o 1/3 ma mua o ka make apo me 14% Cr content ma lalo o nā kūlana like o nā lāʻau ʻē aʻe; No laila, ʻo ke kumu o ka maikaʻi o ka make apo mai ka loko kila. ʻAʻole pono wale nō e hōʻoia i ka ʻoi aku o ka Cr content ma mua o 13%, akā e hōʻoia pū kekahi i ka nui a me ke ʻano e hoʻokō i nā koi o ka forging.
| S/N | HOʻOHĀLIKE | SizeOD*ID*laulā holoʻokoʻa*laulā pad -mm |
| 1 | CPM MAKE | 304*370*90*60 |
| 2 | CPM 21 | 406*558*152*84 |
| 3 | CPM16/25 | 406*558*182*116 |
| 4 | CPM A25/212 | 406*559*212*116 |
| 5 | CPM2016-4 | 406*559*189*116 |
| 6 | CPM3000N/CPM3020-4 | 508*659*199*115 |
| 7 | CPM3016-4 | 559*406*190*116 |
| 8 | CPM3016-5 | 559*406*212*138 |
| 9 | CPM3020-6/CPM3000W | 660*508*238*156 |
| 10 | CPM3020-7 | 660*508*264*181 |
| 11 | CPM3022-6/CPM7000/CPM7122-6/CPM7722-6 | 775*572*270*155 |
| 12 | CPM3022-8 | 775*572*324.5*208 |
| 13 | CPM7726-6 | 890*673*325*180 |
| 14 | CPM7726-8 | 890*673*388*238 |
| 15 | CPM7726-9SW | 890*672*382*239 |
| 16 | CPM7932-9 | 1022.5*826.5*398*240 |
| 17 | CPM7932-11 | 1027*825*455.5*275 |
| 18 | CPM7932-12 | 1026.5*828.5*508*310.2 |
| 19 | CPM7730-7 | 965*762*340*181 |
CPM 2016-4 CPM 3020-4 CPM 3020-6 CPM 3022-6 CPM 3022-8 CPM 7722-2 CPM 7722-4 CPM 7722-6 CPM 7722-7 CPM 7726-7 CPM 7730-4 CPM 7730-6 CPM 7730-7 CPM 7730-8 CPM 7930-4 CPM 7930-6 CPM 7930-8 CPM 7932-5 CPM 7932-7 CPM 7932-9 CPM 7932-11 CPM 7932-12 CPM 9636-7 CPM 7936-12 CPM 9042-12