Stainless Hlau 321 Nqe Ib Kg (2026 Hloov Kho)
Sep 07, 2026
Stainless hlau 321 Nqe Ib Kg 2026|Tus Nqi, Qhov Loj & Cov Khoom Muag Qhia
Stainless hlau 321 nqi ib kg yog feem ntau $2.8-$5.5/kg hauv 2026, nyob ntawm cov khoom daim ntawv, thickness, manufacturing txheej txheem, thiab txiav txim kom muaj nuj nqis.
Lub Cuaj Hli 2026: USD 2.45-3.20 rau phaj thiab ntawv, USD 2.90-3.70 rau bar, thiab USD 3.60-4.50 rau seamless yeeb nkab rau ASTM A312 TP321. Cov qib nqa 15-20% tus nqi tshaj 304 vim nws cov titanium ntxiv, thiab 321H tus nqi ntxiv 10-15% rau saum 321 vim tias cov pa roj carbon nruj dua.
Nrog LME npib tsib xee nyob ntawm USD 16,530 ib tonne ntawm 2 Cuaj Hlis 2026, npib tsib xee ib leeg (9-12% ntawm cov alloy) suav txog kwv yees li USD 1.5-2.0 ntawm txhua kg. Yuav 321 thaum koj qhov kev pabcuam zaum ntawm 425 thiab 900℃lossis koom nrog polythionic acids; yuav 304L thiab txuag tus nqi thaum nws tsis.
SS 321 Nqe Ib Kg
| Yam khoom & Specification | Qhov ntau thiab tsawg / Dimensions | Tus nqi ntau (USD / Kg) | Nqe Ntau (USD / Metric Ton) |
| Seamless yeeb nkab (ASTM A312 TP321) | OD: 1/8 "- 24" (SCH 10 txog XXS) | $3.30 - $5.50 / kg | $3,300 - $5,500 / MT |
| Welded yeeb nkab (ASTM A312 / A358) | OD: 1/2 "mus rau 48" | $2.70 - $4.20 / kg | $2,700 - $4,200 / MT |
| Phaj & Sheets (ASTM A240) | Thickness: 3mm mus rau 50mm | $2.60 - $4.00 / kg | $2,600 - $4,000 / MT |
| Round Bars (ASTM A276 / A479) | Dia: 10mm txog 300mm | $3.00 - $4.80 / kg | $3,000 - $4,800 / MT |
| Flanges & Fittings (ASME B16.9 / B16.5) | 1/2 "mus rau 48" (Forged) | $5.00 - $8.50 / kg | $5,000 - $8,500 / MT |
Lus Cim: Cov nqi sib txawv nrog LME npib tsib xee, tuab / qhov loj me, nto tiav, MOQ, ntawv pov thawj (ASTM-A240 / A312). Rau kev siv nkaus xwb, tsis yog kev hais tawm.
Tus nqi tseem ceeb tsav tsheb
- Titanium thiab Nickel Surcharges: Tus nqi ntawm cov khoom siv raw cov nqi cuam tshuam ncaj qha rau LME nickel indexes thiab titanium daim txhuam cev ua lag luam hloov.
- Txoj kev tsim khoom: Seamless structural configurations xav tau cov txheej txheem kub - tho, tsim ib tug 15% mus rau 25% tus nqi kim tshaj hluav taws xob tsis kam welded (ERW) lwm txoj kev.
- Surface Finish & Testing: Cov kev cai tshwj xeeb xws li kuaj ultrasonic (UT), kuaj hluav taws xob (RT), lossis ci ntsa iab ntxiv cov nqi ua haujlwm ntxiv.
Dab tsi yog 321 Stainless Hlau?
Stainless hlau 321 (UNS S32100 / DIN 1.4541) yog austenitic chromium -nickel stainless hlau alloy txhim kho nrog ntxiv ntawm titanium. Cov ntsiab lus titanium- tsawg kawg tsib npaug ntawm cov pa roj carbon feem pua - ruaj khov micro- qauv tiv thaiv chromium carbide nag lossis daus thaum raug tshav kub ntawm 425℃thiab 850℃. Nws yog dav siv nyob rau hauv siab -kub piping, petrochemical khoom, tshav kub exchangers, aerospace Cheebtsam, thiab rau siv rauv.
Stainless hlau 321 VS 304 VS 316L Nqe
| Parameter / Feature | Stainless hlau 321 (S32100) | Stainless hlau 304 (S30400) | Stainless hlau 316L (S31603) |
| Thawj Alloying Element | Titanium (Ti) Stabilized | Baseline 18/8 Cr-Ni | Molybdenum (Mo) 2-3% Ntxiv |
| Max Service Temp (Nruam) | Txog 870℃(1600℃F) | Txog 870℃(Risk of rhiab heev) | Txog li 800 degree |
| Weldability & Sensitization Resistance | Zoo heev (Ti tiv thaiv carbide nag lossis daus) | Kev Ncaj Ncees (Ssceptible to weld decay if unannealed) | Zoo (tsawg carbon txwv carbide tsim) |
| Chloride Pitting Resistance | Nruab nrab (Zoo li 304) | Nruab nrab | Superior (Vim cov ntsiab lus Molybdenum) |
| Tus nqi txheeb ze (2026) | Nruab nrab-High ($ 3.20– $4.50/kg) | Tus nqi ($ 2.20 - $ 3.00 / kg) | Siab dua ($ 3.50 - $ 5.00 / kg) |
Stainless hlau 321 Nqe Trend
| Daim ntawv khoom | Qib / Txuj | Loj | Kwv yees FOB Tuam Tshoj Nqe (USD / kg) |
| Kub- dov phaj, No.1 tiav | ASTM A240 Hom 321 | 3-12 hli | 2.45-2.75 |
| Txias-cov ntawv dov, 2B tiav | ASTM A240 Hom 321 | 0.8-3.0 hli | 2.65-3.05 |
| Nruab nrab / hnyav phaj | ASTM A240 Hom 321 | 16-56 hli | 2.85-3.20 |
| Lub phaj hnyav | ASTM A240 Hom 321 | 60-75 hli | 3.60-3.85 |
| Seamless yeeb nkab | ASTM A312 TP 321 Cov Lus Qhia Tshwj Xeeb | Sch 40, qhov ntau thiab tsawg | 3.60-4.50 |
| Welded yeeb nkab | ASTM A312 TP 321 Cov Lus Qhia Tshwj Xeeb | Qhov ntau thiab tsawg | 2.90-3.60 |
| Thaum tshav kub kub - exchanger tube | ASTM A213 TP 321 Cov Lus Qhia Tshwj Xeeb | 10-25 mm, nyias phab ntsa | 3.80-4.20 |
| Round bar | ASTM A276 / A479 Hom 321 | 6-100 hli | 2.90-3.70 |
Yam khoom:
ASTM A182 F321 Ib Nrab Tag Nrho Coupling
S32100 Seamless Welded Yeeb Nkab
FAQ:
Q: "Vim li cas stainless hlau 321 kim dua 304?"
A: Muab piv rau 304, 321 muaj kwv yees li tsib npaug ntawm cov ntsiab lus ntawm titanium, uas ua rau muaj kev tiv thaiv zoo rau intergranular corrosion. Yog li ntawd, nws lub hauv paus tonne lossis chav tsev nqi ib kilogram feem ntau yog 15% mus rau 25% siab dua.
Q: "Tam sim no stainless hlau 321 daim ntawv nqi ib kg nyob rau hauv Tuam Tshoj / Europe lag luam."
| Kev ua lag luam | Hom SS321 Daim Ntawv Nqe |
| Tuam Tshoj domestic kev lag luam | USD 2.8–4.0 / kg |
| Tuam Tshoj export FOB | USD 3.2-4.5 / kg |
| Teb chaws Europe xa | USD 4.0–5.5 / kg |
| Me me / txiav- rau-size | USD 5.0+/kg |
Q: "Yuav ua li cas ntxiv titanium cuam tshuam rau SS321 tus nqi hloov pauv?"
A: Tus nqi ntawm SS321 yog tsav los ntawm ob qho tib si tus nqi ntawm titanium stabilizer ntxiv thiab cov nqi thoob ntiaj teb ntawm nickel thiab chromium raw khoom. Titanium muaj feem me me hauv SS321 piv nrog npib tsib xee lossis chromium, tab sis nws tseem tuaj yeem cuam tshuam tus nqi vim titanium yog ib qho tshwj xeeb alloying ntxiv uas yuav tsum tau tswj cov melting thiab ua.
Q: Tus nqi ntawm stainless hlau 321 ib kg nyob rau hauv 2026 yog dab tsi?
A: Stainless hlau 321 nqi ib kg khiav USD 2.45-3.20 rau phaj thiab ntawv FOB Tuam Tshoj, A: USD 3.60-4.50/kg rau seamless ASTM A312 TP321 yeeb nkab, thiab USD 2.90-3.70/kg rau bar raws li lub Cuaj Hli Ntuj 2026. 321H ntxiv 10-15%. Cov nqi txav nrog LME npib tsib xee, uas tau them ntawm USD 16,530 / t ntawm 2 Cuaj Hlis 2026.
Q: Vim li cas 321 kim dua 304?
A: Qhov sib ntxiv ntawm titanium thiab cov khoom siv luv luv. Lub lim tiam dhau los ntawm Lub Yim Hli 2026, Suav 321 kub- dov phaj hais CNY 16,600-16,750 / t tawm tsam 304 ntawm CNY 14,000-14,800 / t, tus nqi 17-19%. Seamless yeeb nkab qhia qhov dav dav 30-40% qhov sib txawv vim tias qhov qis qis dua.
Q: Puas yog 321 pheej yig dua li 316?
A: Yog, los ntawm cov npoo dav: 316L phaj nqi kwv yees li 1.7-1.8x tus nqi 321. Tab sis lawv tsis yog hloov pauv . 316 yeej ntawm chlorides thiab marine kev pabcuam ua tsaug rau molybdenum; 321 yeej siab tshaj li 500 deg C thiab hauv kev pabcuam polythionic acid. Xaiv los ntawm ib puag ncig, tsis yog los ntawm tus nqi.
Q: Qhov txawv ntawm 321 thiab 321H yog dab tsi, thiab 321H puas tsim nyog tus nqi ntxiv?
A: 321H tswj cov pa roj carbon rau 0.04-0.10% thiab xa txog 40% siab dua 1,000-teev creep rupture zog ntawm 700 deg C. Nws raug nqi 10-15% ntxiv. Rau kev pabcuam kev thauj mus los siab tshaj li ntawm 550 ° C, xws li superheater thiab lub tshuab ua kom sov, yog. Rau cov khoom uas tsis yog-load-bearing thermal, tsis yog.
Q: Tus nqi nickel puas cuam tshuam rau stainless hlau 321 nqe?
A: ncaj qha. Nickel yog 9-12% ntawm cov hlau, yog li ntawm USD 16,530 / t cov ntsiab lus nickel ib leeg yog tsim nyog USD 1.5-2.0 ib kg, kwv yees li 60-75% ntawm cov khoom siv raw. Ib USD 1,000 / t LME hloov pauv cov nqi phaj los ntawm kwv yees li USD 0.10-0.12 / kg hauv lub lis piam.
Q: Tus nqi sib txawv ntawm seamless thiab welded 321 yeeb nkab yog dab tsi?
A: Kwv yees li 25-35%. Seamless ASTM A312 TP321 quotes USD 3.60-4.50 / kg FOB Tuam Tshoj tiv thaiv USD 2.90-3.60 rau welded, reflecting billet nqi thiab kub-piercing tawm los. Rau feem ntau lub siab thiab txheej txheem kab hauv qab 500 deg C, welded yeeb nkab nrog RT zoo yog tus nqi zoo dua; seamless yog teev nyob qhov twg code, phab ntsa, los yog nto yuav tsum tau thov nws.
Cov ntaub ntawv thiab cov peev txheej
1. ASTM A240 / ASME SA-240 - Standard Specification rau Chromium thiab Chromium-Nickel Stainless Steel Phaj, Sheet, thiab Sawb rau Cov Nkoj Siab thiab Kev Siv Dav Hlau (Hom 321, UNS S32100; Hom 321H, UNS S32109).
2. ASTM A312 / A213 - Cov Lus Qhia Tshwj Xeeb rau Seamless and Welded Austenitic Stainless Steel Pipes (TP321) thiab Seamless Ferritic thiab Austenitic Alloy-Steel Boiler, Superheater, thiab Heat-Exchanger Tubes.
3. AZO Cov Khoom Siv, "Stainless Steel - Qib 321 (UNS S32100)" - muaj pes tsawg leeg, cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, thiab cov khoom siv vuam vuam.
