Dab tsi yog A2 stainless hlau sib npaug?
Jan 04, 2026
Tso lus
Dab tsi yog A2 stainless hlau?
A2 stainless hlau yog austenitic stainless hlau, tseem hu ua Hom 304 lossis 18/8 stainless hlau. Nws tsis yog- sib nqus, tawv, thiab muaj 18-20% chromium thiab 8-10.5% npib tsib xee. Nws muaj kev tiv thaiv corrosion zoo rau ntau cov tshuaj, tab sis nws cov tshuaj tiv thaiv chloride tsis zoo li A4 (316) stainless hlau. Cov khoom siv feem ntau suav nrog cov khoom siv hauv chav ua noj, cov khoom siv hauv tsev, cov khoom siv tsheb, thiab cov thawv ntim tshuaj.
Dab tsi yog A2 stainless hlau sib npaug?
A2 stainless hlau feem ntau sib npaug rau Hom 304 stainless hlau (ASTM A276 / A240), tseem hu ua 18-8 stainless hlau, lees paub los ntawm nws 18% chromium thiab 8% nickel cov ntsiab lus rau kev tiv thaiv corrosion zoo hauv kev siv dav dav, nrog cov qib metric xws li X5CrNi18-1013 kev siv ncaj qha rau Europe (1. Thaum A2 yog ib qho kev faib tawm dav dav, tshwj xeeb A2 fasteners (A2-70) yog txias-ua haujlwm kom muaj zog dua, sib txawv me ntsis hauv cov khoom siv kho tshuab tab sis hauv paus sib koom 304 muaj pes tsawg leeg.
| Lub teb chaws / Cheeb Tsam | Txheem / Specification | Qib sib npaug |
| Tuam Tshoj | GB/T 1220, GB/T 20878 | 06Cr19Ni10 (los yog 304) |
| Teb chaws USA | ASTM A276 thiab ASTM A240 | 304 |
| EU | TS EN 10088-2 | X5CrNi18-10 (1.4301) |
| Lub teb chaws Yelemees | TS EN 10088-2 | X5CrNi18-10 |
| Nyiv | JIS G4303 | SUS 304 |
| Askiv | TS EN 10088-2 | 304S15 |
Dab tsi yog qhov txawv ntawm A2 thiab A4 stainless hlau?
A2 (Hom 304) yog dav dav- lub hom phiaj stainless hlau, zoo rau kev siv txhua hnub, thaum A4 (Type 316) yog "marine qib," muab kev tiv thaiv corrosion zoo tshaj vim ntxiv molybdenum, ua rau nws zoo tagnrho rau cov ntug hiav txwv dej, tshuaj, lossis ib puag ncig hnyav. Xaiv A2 rau tus nqi- siv sab hauv tsev / sab nraum zoov thiab A4 rau cov dej ntsev, de- icing ntsev, los yog tshuaj lom neeg nyob qhov twg lub neej ntev yog qhov tseem ceeb, txawm tias nws tus nqi siab dua.
Kev sib xyaw ntawm A2 Stainless Hlau
| Element | Cr | Ni | C | Mn | P | S | Si | N |
| wt% | 18.0 – 20.0 | 8.0 – 10.5 | Tsawg dua lossis sib npaug li 0.08 | Tsawg dua los yog sib npaug rau 2.0 | Tsawg dua lossis sib npaug li 0.045 | Tsawg dua lossis sib npaug li 0.03 | Tsawg dua los yog sib npaug rau 1.0 | Tsawg dua lossis sib npaug li 0.10 |
Mechanical Properties ntawm A2 Stainless Hlau
| Khoom | Tus nqi |
| Tensile zog | 515-740 MPa |
| Yield zog | 205 MPa (min) |
| Brinell Hardness (HB) | 123-201 IB |
| Rockwell Hardness (HRC) | 70 – 88 HRC |
| Vickers Hardness (HV) | 129-200 HV |
| Elongation | 40% (hauv 50mm) |
| Elastic Modulus | 193 gp ua |
Lub cev muaj zog ntawm A2 Stainless Hlau
| Khoom | Tus nqi (Metric) | Tus nqi (Imperial) |
| Qhov ntom | 7.75 g / cm³ | 0.280 lb/in³ |
| Melting Point | 1,480 degree | 2,696℃F |
| Thermal conductivity | 24.9 W/m·K | 173 BTU·in/hr·ft²·° F |
| Thermal Expansion | 10.2 µm / m· degree | 5.7 µin/in·℃F |
| Hluav taws xob conductivity | 1.25 x 10⁶ S/m | 2.15% IAB |
Puas yog A2 Stainless Hlau Sib Nqus?
Hauv nws lub xeev annealed, A2 stainless hlau tsis yog hlau nplaum. Tab sis nws tuaj yeem sib nqus me ntsis thaum txias - ua haujlwm lossis welded. Qhov no yog qhov tseem ceeb hauv cov ntawv thov uas cov khoom sib nqus yog qhov tseem ceeb.
Puas yog A2 nyuaj dua D2?
D2 steel yog hnyav dua thiab hnav ntau dua- tiv taus, ua rau nws zoo tagnrho rau siab - pwm precision thiab cov cuab yeej txiav. A2 steel yog tawv dua, muab kev tiv thaiv zoo dua rau chipping thiab tawg, zoo meej rau cov cuab yeej uas muaj kev cuam tshuam.
Puas yog A4 stainless hlau corrosion tsis kam tshaj A2 stainless hlau?
Yog lawm, A4 (AISI 316) stainless hlau tau zoo corrosion kuj zoo dua li A2 (AISI 304) stainless hlau. Raws li ISO 9227 nruab nrab ntsev tsuag tshuaj ntsuam, A2 stainless hlau feem ntau qhia qhov tseem ceeb pitting corrosion tom qab 200 mus rau 500 teev ntawm raug rau 3.5% sodium chloride tov, thaum A4 stainless hlau tuaj yeem tiv taus 1000 mus rau 2000 teev nyob rau hauv tib lub sij hawm sim tsis muaj kev puas tsuaj loj. A2 tsuas yog haum rau thaj chaw hauv av nrog cov tshuaj chloride ion tsawg (tsawg dua lossis sib npaug li 500 ppm Cl⁻) thiab muaj kev pabcuam lub neej ntawm 10-20 xyoo, thaum A4 tuaj yeem tiv taus chloride ion concentrations siab txog 10,000-20,000 ppm hauv marine splash zones 5 xyoo hauv 1-20 xyoo. Yog li ntawd, A4 yog cov khoom siv zoo tshaj plaws rau cov ntug hiav txwv dej, sab nrauv, thiab kev siv tshuaj lom neeg.
GNEE muab siab -zoo A2 stainless hlau fasteners thiab threaded khoom, tsim los ntawm AISI 304 / ISO 3506-A2 khoom. Tag nrho cov khoom raug soj ntsuam nruj me ntsis (qhov kam rau ua nyob rau hauv ± 0.1 hli), kev tshuaj ntsuam xyuas saum npoo av, thiab kev kuaj xyuas cov cuab yeej cuab tam, thiab tau lees paub rau ISO 9001 kev tswj xyuas kev ua haujlwm zoo. Cov ntaub ntawv ntsuam xyuas thib peb (piv txwv li, SGS / BV) muaj nyob rau ntawm kev thov kom paub meej cov khoom lag luam.
Hais txog kev thauj mus los, GNEE siv cov khoom xa tawm- cov khoom ntim khoom, suav nrog lub kaus mom tiv thaiv, noo noo- cov ntaub ntawv pov thawj, thiab cov ntoo crates lossis pallets, kom ntseeg tau tias cov khoom tuaj txog nyab xeeb thiab tsis muaj kev puas tsuaj los ntawm hiav txwv lossis huab cua.
Xa kev nug