Saky Steel itanga 440 yuruhererekane rukomeye rwa martensitike idafite ibyuma & plaque 440A, 440B, 440C
AISI 440A, UNS S44002, JIS SUS440A, W.-nr.1.4109 (DIN X70CrMo15) impapuro zidafite ingese, amasahani, amagorofa
AISI 440B, UNS S44003, JIS SUS440B, W.-nr.1.4112 (DIN X90CrMoV18) impapuro zidafite ingese, amasahani, amagorofa
AISI 440C, UNS S44004, JIS SUS440C, W.-nr.1.4125 (DIN X105CrMo17) impapuro zidafite ingese, amasahani, amagorofa
440A 440B 440C ibigize imiti:
| Icyiciro | C | Si | Mn | S | P | Cr | Ni | Mo |
| 440A | 0.60 ~ 0,75 | ≤1 | ≤1 | ≤0.030 | .040.040 | 16.00 ～ 18.00 | - | ≤0.75 |
| 440B | 0,85 ～ 0.95 | ≤1 | ≤1 | ≤0.030 | ≤0.035 | 16.00 ～ 18.00 | 60.60 | ≤0.75 |
| 440C | 0.95 - 1.20 | ≤1 | ≤1 | ≤0.030 | .040.040 | 16.00 ～ 18.00 | - | ≤0.75 |
Ibirimo bya karubone hamwe nubukomezi bwa 440A-440B-440C byiyongereye bikurikiranye kuva ABC (A-0,75%, B-0,9%, C-1.2%).440C nicyuma cyiza cyane cyohejuru-cyuma kitagira ibyuma gifite ubukana bwa 56-58 RC.Ibyuma bitatu bifite imbaraga zo kurwanya ingese, 440A nibyiza, naho 440C niyo yo hasi.440C irasanzwe.Ibigize imiti ya martensitike idafite ibyuma birangwa no kongeramo ibintu nka molybdenum, tungsten, vanadium, na niobium bishingiye ku guhuza ibice bitandukanye bya 0.1% -1.0% C na 12% -27% Cr.Kubera ko imiterere yinyama ari cubic ishingiye kumubiri, imbaraga zigabanuka cyane mubushyuhe bwinshi.Munsi ya 600 ° C, imbaraga zubushyuhe bwo hejuru nizo hejuru mubwoko bwose bwibyuma bitagira umwanda, kandi imbaraga zo kunyerera nazo ziri hejuru.440A ifite kuzimya no gukomera no gukomera cyane.Ifite ubukana burenze 440B ibyuma na 440C ibyuma.440B ikoreshwa mugukata ibikoresho, gupima ibikoresho, ibyuma na valve.Ifite ubukana burenze 440A ibyuma nuburemere burenze ibyuma 440C.440C ifite ubukana buhebuje bw'ibyuma byose bidafite ingese hamwe n’ibyuma birwanya ubushyuhe kandi bikoreshwa muri nozzles.440F nicyiciro cyicyuma gitezimbere ibintu byoroshye-gukata ibyuma 440C ibyuma byikora.
Igihe cyo kohereza: Kanama-17-2018