Puas yog 904L Stainless Hlau Sheet kim dua 316L?
Feb 05, 2026
Tso lus
Yog tias koj tab tom nrhiav kev ua haujlwm siab -kev ua haujlwm stainless hlau rau cov tshuaj, dej hiav txwv, lossis kev lag luam, cov lus nug feem ntau yog: Puas yog 904L stainless hlau kim dua 316L stainless hlau? Cov lus teb yog yog, 904L stainless hlau tseem kim dua li 316L stainless hlau, feem ntau raug nqi 60% mus rau 80% ntau dua, qhov nruab nrab ntawm 1.5 npaug ntawm tus nqi ntawm 316L. Tus nqi siab dua no yog vim nws cov ntsiab lus siab dua ntawm cov khoom siv kim kim, uas ua rau nws zoo dua rau 316L stainless hlau.
Dab tsi yog 904L stainless hlau ntawv?
904L stainless hlau ntawv yog siab- alloy, tsis yog- hlau nplaum austenitic stainless hlau (UNS N08904) tsim los rau tshwj xeeb corrosion kuj nyob rau hauv ib puag ncig hnyav, tshwj xeeb tshaj yog tiv thaiv sulfuric thiab phosphoric acids. Muaj cov nickel siab, chromium, molybdenum, thiab tooj liab, nws muaj kev tiv thaiv zoo tshaj rau chloride -induced pitting thiab kev nyuaj siab corrosion cracking.
Dab tsi yog 316L stainless hlau ntawv?
316L stainless hlau ntawv yog ib qho ultra- qis carbon austenitic stainless hlau nrog cov ntsiab lus carbon tsis ntau tshaj 0.03% (C Tsawg dua lossis sib npaug li 0.03%). Nws kuj muaj 16% -18% chromium, 10% -14% npib tsib xee, thiab 2% -3% molybdenum, txhim kho nws cov corrosion kuj thiab tsis kam mus rau intergranular corrosion. Nws yog tshwj xeeb tshaj yog haum rau ib puag ncig uas annealing tom qab vuam yog tsis tau thiab siab corrosion kuj yuav tsum tau.
🔹 Chemical Composition
| Element | 316L (% los ntawm qhov hnyav) | 904L (% los ntawm qhov hnyav) |
|---|---|---|
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.03 | Tsawg dua lossis sib npaug li 0.02 |
| Chromium (Cr) | 16.0–18.0 | 19.0–23.0 |
| Nickel (Ni) | 10.0–14.0 | 23.0–28.0 |
| Molybdenum (hli) | 2.0–3.0 | 4.0–5.0 |
| Copper (Cu) | - | 1.0–2.0 |
| Nitrogen (N) | Tsawg dua lossis sib npaug li 0.10 | Tsawg dua lossis sib npaug li 0.10 |
🔹 Mechanical Properties
| Khoom | 316L Stainless hlau | 904L Stainless hlau |
|---|---|---|
| Tensile zog (MPa) | Ntau dua lossis sib npaug rau 485 | Ntau dua lossis sib npaug rau 490 |
| Yield zog (MPa) | Ntau dua lossis sib npaug li 170 | Ntau tshaj los yog sib npaug rau 220 |
| Elongation (%) | Ntau dua lossis sib npaug li 40 | Ntau dua lossis sib npaug li 35 |
| Hardness (HRB) | Tsawg dua los yog sib npaug li 95 | Tsawg dua los yog sib npaug li 90 |
| Qhov ceev (g / cm³) | 8.00 | 8.05 |
🔹Corrosion Resistance (Pitting Resistance Equivalent Number, PREN)
| Qib | PREN | Visual Indicator |
|---|---|---|
| 904L | 40–45 | Zoo heev |
| 316L | 24–26 | Muaj kev kub ntxhov |
🔹Sib nqus teb
| Qib | Magnetic Properties |
|---|---|
| 904L | Tsis yog- sib nqus (annealed), tsawg kawg tom qab ua haujlwm txias |
| 316L | Tsis yog- sib nqus (annealed), tsawg kawg tom qab ua haujlwm txias |
🔹Pom zoo daim ntawv thov
| Qib | Kev siv yam |
|---|---|
| 904L | Offshore platforms, tshuaj tanks, khoom siv tshuaj, marine piping |
| 316L | Kev ua zaub mov, kev kho dej, khoom siv tshuaj lom neeg |
🔹Tus nqi sib piv
| Qib | Kwv tij Nqe | Visual Indicator |
|---|---|---|
| 904L | 2–3× 316L | 🔴 Siab |
| 316L | Puag | |
Puas yog 904L Stainless Hlau Sheet kim dua 316L?
Yog lawm, 904L stainless hlau ntawv tseem kim dua li 316L, feem ntau raug nqi 60% mus rau 80% ntau dua, lossis nruab nrab ntawm 1.5 npaug ntawm tus nqi. Tus nqi siab dua no yog vim nws qhov kev tiv thaiv corrosion zoo dua thiab cov ntsiab lus alloy ntxiv, tshwj xeeb dua cov npib tsib xee (23-28%) thiab molybdenum (4-5%) qib piv rau 316L.
Kuv tuaj yeem yuav 904L daim hlau qhov twg?
Yog tias koj tab tom nrhiav rau tus neeg muag khoom ntawm 904L stainless hlau daim hlau, GNEE Stainless Steel muaj siab -zoo 904L kub- dov thiab txias- cov phaj dov, tag nrho nrog MTC, PMI, thiab NDT daim ntawv pov thawj. Peb muab cov nqe lus them nqi hloov pauv, suav nrog T / T, L / C, lossis D / P, nrog lub sijhawm xa khoom tus qauv ntawm 15-30 hnub, nyob ntawm seb qhov ntau npaum li cas. Cov kav dej tau ntim rau hauv cov khoom xa tawm -qib ntoo crates nrog lub hau yas kawg los tiv thaiv deformation thiab corrosion. Peb muab ntau yam kev xaiv shipping xws li FOB, CFR, CIF, lossis DDP, thiab muab cov ntaub ntawv xa tawm raws sijhawm thiab ua tiav cov ntaub ntawv xa tawm kom muaj kev nyab xeeb thiab txhim khu kev xa khoom thoob ntiaj teb.
Xa kev nug