UNS S31803 Duplex Stainless Hlau Yeeb Nkab
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S31803 (F51/SAF 2205)yog qib duplex stainless hlau, tseem hu ua 2205 stainless hlau lossis S31803 stainless hlau yeeb nkab.
S31803 stainless hlau yeeb nkab yog duplex stainless hlau nyob rau hauv uas austenite thiab ferrite coexist nyob rau hauv kwv yees li ib nrab proportions. Qhov kev faib ua feem ntawm nws theem ferrite thiab austenite yog nruab nrab ntawm 45% thiab 55%. Duplex S31803 stainless hlau yeeb nkab paub txog nws lub zog siab, corrosion kuj thiab hnav tsis kam. Tsis tas li ntawd xwb, nws kuj muaj kev vuam zoo. thiab ua cov khoom, yog li nws yog dav siv nyob rau hauv manufacturing teb.
Lub zog tawm los ntawm S31803 duplex stainless hlau yeeb nkab yog ob zaug ntawm austenitic stainless hlau, thiab nws muaj zog dua txhua yam thiab zoo dua piv nrog 316 thiab 317L stainless hlau.
Qhov zoo ntawm S31803 Stainless Hlau Hollow Yeeb Nkab yog tias nws tuaj yeem tiv taus siab dua thiab kub thiab tsis tshua muaj kev ntxhov siab corrosion tawg. Tsis tas li ntawd, vim nws cov qauv dual-theem, nws muaj qhov zoo ntawm plasticity thiab toughness ntawm qhov kub thiab txias, yog li nws yog dav siv nyob rau hauv offshore roj, tshuaj, tshuaj thiab lwm yam lag luam.
Chemical Composition (% los ntawm qhov hnyav)
| Element | Min | Max |
|---|---|---|
| C | - | 0.030 |
| Mn | - | 2.00 |
| P | - | 0.030 |
| S | - | 0.020 |
| Si | - | 1.00 |
| Ni | 4.5 | 6.5 |
| Cr | 21.0 | 23.00 |
| Mo | 2.5 | 3.5 |
| N | 0.08 | 0.20 |
| Fe | Tshuav | |
Mechanical Properties (Room Temperature)
| Khoom | Annealed Temper |
|---|---|
| 0.2% Yield (Rp=0.2) | 65 ksi (450 MPa) yam tsawg kawg nkaus |
| Tensile (Rm) | 90 ksi (620 MPa) yam tsawg kawg nkaus |
| Elongation (2 "gl) | 25% yam tsawg kawg nkaus |
| Hardness | 290 HV Max |
Duplex Steel UNS S31803 Khoom siv yeeb nkab
Physical Properties (Room Temperature)
| Thaum tshav kub kub tshwj xeeb (0-100 degree) | 500 | J / kg / degree K |
| Thermal conductivity @ 20C | 15 | W / m / degree K |
| Thermal Expansion | 13 | μm / m / degree |
| Modulus Elasticity | 200 | GPa |
| Hluav taws xob Resistivity | 8.5 | Aw-cm |
| Qhov ntom | 7.8 | g/cm3 |
UNS S31803 Duplex Stainless Hlau Yeeb Nkab & Tubes Thaum tshav kub kub kho
Qhov kev kho cua sov zoo tshaj plaws rau qib no yog kev kho mob (annealing), nruab nrab ntawm 1020 - 1100 degree , ua raws li qhov txias txias. Qib 2205 tuaj yeem ua haujlwm nyuaj tab sis tsis tuaj yeem ua kom tawv los ntawm cov txheej txheem thermal.
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