Alloy 400 (UNS N04400) yog cov hlau nplaum nickel-tooj liab uas tiv taus ntau yam corrosive. Cov alloy feem ntau yog siv nyob rau hauv ib puag ncig xws li me me oxidizing mus rau nruab nrab thiab txo qis. Cov ntawv thov ntxiv rau cov khoom siv muaj xws li thaj chaw marine thiab lwm yam kev daws teeb meem uas tsis yog oxidizing chloride.

Khoom Parameter:

Nruab nrab Linear Expansion:

Kub		Nruab nrab linear expansion a
degree F	degree	hauv/in/ degree F x 10 -6	µm / m• degree С
-320	-200	-	-
-300	-180	6.1	11.1
-200	-130	6.4	11.4
-100	-70	6.7	12.1
70	21	-	-
200	100	7.7	14.2
400	200	8.6	15.2
600	300	8.8	15.7
800	400	8.9	16.1
1000	500	9.1	16.3
1200	600	9.3	16.6
1400	700	9.6	17.0
1600	800	9.8	17.4
1800	900	10.0 b	17.7
2000	1000	10.3 b	18.1 b

Mechanical zog:

Nominal mechanical zog ntawm alloys 400 thiab 400AR ntawm chav tsev kub

Daim Ntawv Thiab Cov Txheej Txheem	Yield zog nrog 0.2% offset		Tensile zog		Elongation,%	Hardness
Daim Ntawv Thiab Cov Txheej Txheem	xis	MPa	xis	MPa	Elongation,%	Brinell (3000kg)	Rockwell B
Phaj
Kub dov, dov	40-75	276-517	75-95	517-655	45-30	125-215	70-96
Kub dov, annealed	28-50	193-345	70-85	482-586	50-35	110-140	60-76

Corrosion kuj:

Alloy 400 yog cov khoom siv ntau yam corrosion resistant. Nws nthuav tawm kev tiv thaiv corrosion hauv ntau qhov chaw txo qis thiab feem ntau tiv taus oxidizing ib puag ncig dua li cov ntsiab lus tooj liab ntau dua. Alloy 400 yog ib qho ntawm ob peb cov ntaub ntawv uas tuaj yeem tiv taus kev sib cuag nrog fluorine, hydrofluoric acid, hydrogen fluoride, los yog lawv cov derivatives. Cov alloy tau pom tias muaj qhov tshwj xeeb tsis kam tiv thaiv hydrofluoric acid nyob rau hauv tag nrho cov concentrations txog rau lub boiling point. Alloy 400 tseem tiv taus sulfuric thiab hydrochloric acids nyob rau hauv kev txo qis. Nws muaj qhov tshwj xeeb tiv thaiv rau nruab nrab thiab alkaline ntsev thiab tau siv los ua cov khoom siv hauv tsev rau cov chaw ntsev ntau xyoo.

Alloy 400 yog ib qho ntawm cov khoom siv dav tshaj plaws rau kev siv dej hiav txwv, nkoj tsim thiab dej hiav txwv desalination nroj tsuag. Cov alloy muaj qhov corrosion tsawg heev nyob rau hauv dej hiav txwv ntws los yog dej brackish. Txawm li cas los xij, nyob rau hauv cov xwm txheej ruaj khov, cov hlau tuaj yeem raug crevice thiab pitting corrosion. Alloy 400 resists corrosion cracking thiab kev nyuaj siab pitting nyob rau hauv feem ntau cov tshiab thiab txheej txheem dej daim ntaub ntawv.