Cov khoom siv twg yog 1.4177 sib npaug?

Apr 02, 2026

Tso lus

1.4117 stainless hlau, feem ntau hu ua 440A lossis UNS S44002, yog siab -carbon martensitic stainless hlau uas muaj qhov sib npaug zoo ntawm hardness, corrosion resistance, thiab toughness. Raws li tus tswv cuab qis dua ntawm 440 series, nws muab me ntsis qis dua hardness dua 440B thiab 440C tab sis muaj kev txhim kho toughness thiab zoo corrosion kuj vim tsawg chromium carbides. Qhov no ua rau nws tsim nyog rau cov ntawv thov uas xav tau kev hnav tsis zoo, kev tuav tuav zoo, thiab kev tiv thaiv corrosion txaus, xws li cutlery, bearings, cov cuab yeej phais, thiab cov khoom siv valve.

Txuj	Qib sib npaug
EN (Tebchaws Europe)	1.4117
ASTM / AISI (USA)	440A, UA S44002
JIS (Nyiv)	SUS 440A
Lub Npe	440A

Element	C	Si	Mn	P	S	Cr	Mo
Cov ntsiab lus (%)	0.60 - 0.75	Tsawg dua los yog sib npaug rau 1.0	Tsawg dua los yog sib npaug rau 1.0	Tsawg dua los yog sib npaug li 0.04	Tsawg dua lossis sib npaug li 0.03	16.0 - 18.0	Tsawg dua lossis sib npaug li 0.75

Qhov xwm txheej	Yield zog (Rp0.2)	Tensile zog (Rm)	Elongation (A)	Hardness (HRC)
Annealed	~ 450 MPa	~ 740 MPa	~ 15%	~ 25 HRC
Hardened & Tempered	Ntau dua lossis sib npaug li 550 MPa	Ntau tshaj lossis sib npaug li 700 MPa	Ntau dua lossis sib npaug li 12%	52 - 56 HRC

Zoo sib npaug ntawm Hardness thiab Toughness:Cov ntsiab lus qis dua muab me ntsis qis dua qhov nyuaj tshaj li 440B lossis 440C tab sis muaj cov tawv tawv zoo dua, ua rau nws tsis nkig thiab tiv taus ntau dua.

Nruab nrab Corrosion Resistance:Muaj kev tiv thaiv corrosion zoo dua li 440B thiab 440C vim tsawg dua chromium carbides hauv microstructure, nrog kev ua haujlwm zoo ib yam li 420 hauv feem ntau ib puag ncig.

Sib nqus thiab Hardenable:Muaj zog sib nqus thiab teb zoo rau kev kho cua sov, nrog zoo los ntawm - muaj peev xwm hardening.

Zoo hnav tsis kam:Muab kev hnav tsis taus txaus rau ntau daim ntawv thov yam tsis muaj qhov brittleness ntawm qib siab dua carbon.

Cov tais diav:Nruab nrab-ntau riam, hniav, txiab, thiab cov tais diav hauv chav ua noj yuav tsum muaj qhov sib npaug ntawm ntug tuav thiab tawv.

Bearings:Pob bearings thiab kev sib tw rau kev thov tsawg dua.

Surgical Instruments:Cov cuab yeej xav tau cov npoo ntse thiab zoo corrosion kuj.

Valve Cheebtsam:Cov rooj zaum, cov pob, thiab cov stems nyob rau hauv kev siv me me.

Cov cuab yeej muaj:Gauges, ntsuas cov cuab yeej, thiab tshuab qhov yuav tsum tau muaj kev ruaj ntseg.

Cov cuab yeej kho hniav:Cov cuab yeej xav tau kom tsis muaj menyuam tsis taus thiab zoo ntug tuav.

Lub 440 series txawv feem ntau hauv cov ntsiab lus carbon: 440A muaj 0.60-0.75% C, 440B muaj 0.75-0.95% C, thiab 440C muaj 0.95-1.20% C. Qhov no ua rau 440A muab qhov qis tshaj plaws hardness (514 HRC4} thiab { 440C) tab sis qhov zoo tshaj plaws toughness thiab corrosion kuj. 440A yog tsawg nkig thiab ntau resistant rau chipping dua cov qib siab carbon, ua rau nws haum rau daim ntaub ntawv uas cuam tshuam kuj tseem ceeb. Nws kuj tseem muaj ntau dua thiab pheej yig dua 440C. 440A feem ntau yog xaiv rau cov ntawv thov uas xav tau qhov sib npaug ntawm hardness, toughness, thiab corrosion kuj yam tsis muaj qhov hnyav (thiab brittleness) ntawm 440C.

Kev kho cua sov rau 440A suav nrog:

Austenitizing:Tshav kub rau 1010-1065 degree, tuav lub sijhawm txaus kom yaj carbides

Quenching:Roj quench rau siab tshaj plaws hardness (cua cua quench yuav haum rau nyias seem)

Tempering:Kub ntawm 150-370℃nyob ntawm qhov xav tau hardness

Qhov kub thiab txias (150-200 degree): Qhov siab tshaj plaws hardness (54-56 HRC)

Nruab nrab kub (230-300 degree): me ntsis qis hardness nrog txhim kho toughness

Siab kub (350-370 degree): Tsawg hardness tab sis zoo tshaj toughness

Kub ntawm 400-550℃yuav tsum tau zam vim embrittlement

Muab ob npaug rau tempering yog pom zoo kom txo kev ntxhov siab thiab qhov ruaj khov

Vuam 440A tsis pom zoo rau feem ntau daim ntawv thov vim nws cov ntsiab lus carbon siab thiab cov qauv martensitic. Yog tias tsim nyog welding:

Preheating (250-350 degree) yog qhov tseem ceeb los tiv thaiv kev tawg

Tsawg hydrogen vuam txheej txheem yuav tsum tau

Austenitic muab tub lim hlau (309L, 310L) raug pom zoo

Tom qab-weld kev kho cua sov (tempering) yog qhov yuav tsum tau los kho cov khoom

Rau cov ntawv thov tseem ceeb, lwm qib nrog cov weldability zoo dua yuav tsum raug txiav txim siab

GNEE Steel muab cov khoom zoo - zoo 440A (1.4117) stainless hlau hauv bar, hlau, sawb, thiab phaj daim ntawv, muaj nyob rau hauv annealed mob rau machining los yog ua ntej- hardened rau cov neeg siv khoom specifications. Peb muab cov ntaub ntawv pov thawj tag nrho (EN 10204 3.1) thiab kev txhawb nqa suav nrog kev txiav txiav, sib tsoo, thiab kev kho cua sov. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.