Bakin Karfe 304,304L,304H

Bakin karfe 304 da bakin karfe 304L kuma an san su da 1.4301 da 1.4307 bi da bi. 304 shine bakin karfe mafi dacewa kuma ana amfani dashi ko'ina. Har yanzu ana kiransa da tsohon suna 18/8 wanda aka samo shi daga nau'in ƙima na 304 kasancewa 18% chromium da 8% nickel. 304 bakin karfe shine austenitic sa wanda za a iya zana mai zurfi mai zurfi. Wannan kadarar ta haifar da 304 kasancewa mafi girman darajar da aka yi amfani da ita a aikace-aikace kamar sinks da tukwane.

304L shine ƙananan sigar carbon na 304. Ana amfani da shi a cikin abubuwan ma'auni masu nauyi don ingantaccen walƙiya.

304H, babban nau'in abun ciki na carbon, kuma ana samunsa don amfani a yanayin zafi mai girma.

Haɗin Sinadari

	C	Si	Mn	P	S	Ni	Cr	Mo	N
SUS304	0.08	0.75	2.00	0.045	0.030	8.50-10.50	18.00-20.00	－	0.10
Saukewa: SUS304L	0.030	1.00	2.00	0.045	0.030	9.00-13.00	18.00-20.00	－	－
304H	0.030	0.75	2.00	0.045	0.030	8.00-10.50	18.00-20.00	-	-

Kayayyakin Injini

Daraja	Ƙarfin Tensile (MPa) min	Ƙarfin Haɓaka 0.2% Hujja (MPa) min	Tsawaitawa (% cikin 50 mm) min	Tauri
				Rockwell B (HR B) max	Brinell (HB) max	HV
304	515	205	40	92	201	210
304l	485	170	40	92	201	210
304H	515	205	40	92	201	-

304H kuma yana da buƙatu don girman hatsi na ASTM No 7 ko coarser.

Abubuwan Jiki

Daraja	Yawan yawa (kg/m3)	Elastic Modulus (GPa)	Ma'anar Ƙirar Ƙarfafawar Ƙarfin Ƙarfafawa (μm /m / ° C)			Ƙarfafa Ƙarfafawa (W/m.K)		Takamaiman zafi 0-100 °C (J/kg.K)	Resistivity na Lantarki (nΩ.m)
			0-100 ° C	0-315 ° C	0-538 ° C	a 100 ° C	a 500 ° C
304/L/H	8000	193	17.2	17.8	18.4	16.2	21.5	500	720

Kimanin kwatancen ƙira don 304 bakin karfe

Daraja	UNS No	Tsohon Birtaniya		Euronorm		Yaren mutanen Sweden SS	JIS na Japan
		BS	En	A'a	Suna
304	S30400	304S31	58E	1.4301	Saukewa: X5CrNi18-10	2332	Farashin 304
304l	S30403	304S11	-	1.4306	X2CrNi19-11	2352	SUS 304L
304H	S30409	304S51	-	1.4948	X6CrNi18-11	-	-

Waɗannan kwatancen kusan sune kawai. An yi nufin lissafin azaman kwatancen kayan aiki masu kama da aiki ba azaman jadawalin daidaitattun kwangiloli ba. Idan ana buƙatar daidai daidai da ƙayyadaddun bayanai na asali dole ne a nemi shawara.

Matsaloli masu yuwuwar Madadin

Daraja	Me yasa za'a iya zaba maimakon 304
301l	Ana buƙatar ƙimar ƙarfin ƙarfin aiki mafi girma don wasu abubuwan da aka kafa ko kuma shimfidawa.
302HQ	Ana buƙatar ƙarancin ƙarfin aiki don ƙirƙira sanyi na sukurori, kusoshi da rivets.
303	Machinability mafi girma da ake buƙata, da ƙananan juriya na lalata, tsari da walƙiya abin karɓa ne.
316	Ana buƙatar ƙarin juriya ga ramuka da ɓarna ɓarna, a cikin mahallin chloride
321	Ana buƙatar mafi kyawun juriya ga yanayin zafi na kusan 600-900 °C… 321 yana da ƙarfin zafi mafi girma.
3CR12	Ana buƙatar ƙaramin farashi, kuma raguwar juriya na lalata da rashin launi abin karɓa ne.
430	Ana buƙatar ƙananan farashi, kuma rage juriya na lalata da halayen ƙirƙira suna da karɓa.