Cov yam ntxwv ntawm cov xov xwm txawv thiab cov lus piav qhia ntawm cov ntaub ntawv tsim nyog

Cov yam ntxwv dav:It is an oxidizing medium. Figenrated HNO3 feem ntau ua haujlwm nyob rau qhov kub qis dua 40 ° C. Elements such as chromium (Cr) and silicon (Si) are resistant to oxidation, making stainless steel and other materials containing Cr and Si ideal for resisting corrosion from concentrated HNO3.

Siab chromium cam khwb cia hlau (CR28):Haum rau tag nrho cov kub qis dua 80% concentration.
Stainless hlau (Sus304, Sus316, Sus316L):Haum rau tag nrho cov kub qis dua 80% concentration.
S-05 steel (0cr13ni7si4):Haum rau tag nrho cov kub qis dua 98% siab.
Kev lag luam ntshiab ntshiab titanium (TA1, TA2):Haum rau txhua qhov kub hauv qab no lub qhov cub npau npau (tsuas yog rau fuming).
Aluminium ntshiab ntshiab (al):Haum rau txhua qhov kub ntawm chav tsev kub (rau kev siv hauv cov thawv xwb).
CD-4MCU hnub nyoog-hardened alloy:Haum rau tag nrho cov kub hauv qab no lub boiling point.
Vim lawv cov khoom lag luam zoo heev, cov khoom siv xws li Innonel, Hastelloy C, Kub, thiab Tantalum tseem haum.

Sulfuric acid (h25o4)

Cov yam ntxwv dav:Lub boiling point nce nrog kev xav. Piv txwv li, ntawm kev xav ntawm 5%, lub tswb ntsuas npau yog 101 ° C; ntawm 50% concentration, nws yog 124 ° C; Thiab thaum 98% siab, nws yog 332 ° C. Hauv qab 75% concentration, nws ua rau muaj kev txo cov khoom (lossis nruab nrab), thiab siab dua 75%, nws ua rau cov tshuaj oxidizing.
Stainless hlau (sus316, sus316L):Hauv qab 40 ° C, ib ncig 20% ​​siab.
904 hlau (sus904, sus904L):Haum rau qhov kub ntawm 40 ~ 60 ° C, 20 ~ 75% concentration; Hauv qab 60% concentration ntawm 80 ° C.
Siab Silicon Cam Khwb Cia Hlau (STPSI15R):Ntau yam ntau ntawm chav nyob thiab 90 ° C.
Cov tshuaj dawb, ua rau muaj zog:
S-05 steel (0cr13ni7si4):Perfeated sulfuric acid hauv qab 90 ° C, high-high-kub concentrated sulfuric acid (120 ~ 150 ° C).
Cov Carbon Steel:

Nruab nrab kub thiab nruab nrab concentration sulfuric acid.
Hauv qab no boiling point, 60% sulfuric acid; Hauv qab 50 ° C, 98% sulfuric acid.
Hastelloy B, D:Hauv qab 100 ° C, 75% sulfuric acid.

Npib Npib Cam Khwb Cia Hlau (STNICR202):60 ~ 90% sulfuric acid ntawm chav tsev kub.

Cov yam ntxwv dav:Nws yog qhov nruab nrab reductive nrog qhov kub siab tshaj plaws ntawm kev xav txog 36-37%. Boiling point: ntawm kev xav txog 20%, nws yog 110 ° C; nruab nrab ntawm 20-36% concentration, nws yog 50 ° C; Yog li ntawd, qhov kub tshaj plaws rau hydrochloric acid yog 50 ° C.
TANTALUM (TA):Nws yog qhov zoo tshaj plaws corrosion-resistant cov ntaub ntawv rau hydrochloric acid, tab sis nws yog kim thiab nquag siv nyob rau hauv precision ntsuas cov khoom siv.
Hastelloy B:
Haum rau txhua qhov kub thiab ntau dua.
Haum rau txhua qhov kub thiab ntau dua.
Kev Lag Luam Ntshiab Titanium (TA1, TA2):Haum rau hydrochloric acid nyob rau chav tsev kub thiab ntau dua hauv qab 10%.
ZXSNM (L) Alloy (00ni70mo28FE2):Haum rau hydrochloric acid nyob rau ib tug kub ntawm 50 ° C thiab ib qho kev xav ntawm 36%.

Phosphoric acid (H3POs4)

Cov concentration ntawm phosphoric acid feem ntau yog nruab nrab ntawm 30-40%, nrog ib qho kub ntawm 80-90 ° C. Phosphoric acid feem ntau muaj cov impurities xws li H2SO4, F- Ease, clents, thiab silicate.
Stainless hlau (sus316, sus316L):
Durimet 20 (Alloy 20):Corrosion thiab hnav-resistant alloy rau qhov kub hauv qab no lub boiling taw tes thiab ntau dua hauv qab 85%.
CD-4MCU:Hnub nyoog-hardened alloy, corrosion thiab hnav-resistant.
Siab Silicon Cam Khwb Cia Hlau (STPSI15R), High Chromium Cam Khwb Cia Hlau (Cr28):Haum rau ntau lub siab ntawm nitric acid hauv qab ntawm boiling point.
904, 904L:Haum rau ntau lub siab ntawm nitric acid hauv qab ntawm boiling point.
Inconel 825:Haum rau ntau lub siab ntawm nitric acid hauv qab ntawm boiling point.

Hydrofluoric acid (HF)

Cov yam ntxwv dav:
Magnesium (MG):Nws yog qhov zoo tshaj plaws corrosion-resistant cov khoom rau hydrofluoric acid thiab feem ntau siv rau cov thawv.
Titanium:Haum rau ntau txog 60-100% ntawm chav tsev kub; Tus nqi corrosion nce nrog ntau qhov ntau hauv qab 60%.
Monel Alloy:
Nyiaj (AG):Boiling hydrofluoric acid feem ntau siv hauv kev ntsuas ntsuas.

Sodium hydroxide (Naoh)

Cov yam ntxwv dav:Kev corrosiveness ntawm sodium hydroxide nce nrog kub.
Sus304, Sus304L, Sus316, sus316L:
Npib Npib Cam Khwb Cia Hlau (STNICR202):Concentration qis dua 40%, ntsuas kub hauv qab 100 ° C.
Inconel 804, 825:
Ntshiab Nickel:
Monel Alloy:

Sodium carbonate (na2co3)

Siab Silicon Nrum Hlau:Haum rau dej qab zib tshauv nrog qhov kub ntawm 32 txog 70 degrees Celsius thiab ib qho siab ntawm 20-26%.
Muaj dawb huv Titanium:Ntau cov dej qab zib tshauv cov khoom qab zib Hauv Tuam Tshoj tam sim no siv titanium twj ua los ntawm titanium rau niam cawv thiab lwm yam xov xwm.

Petrochemical, Tshuaj, thiab Kev Lag Luam Khoom Noj

Petrochemical:
Formic acid:
Acetic acid:Titanium (ti), 316L.
Kws muag tshuaj:Siab Silicon nrum hlau, sus316, sus316L.
Khoom Noj:1cr18ni9, 0CR13, 1CR13. "