Fine grained structural steel rau siab hlab ntsha.A/SA 516 Gr.70+N steelyog tus cwj pwm los ntawm qhov zoo weldability thiab siab ua haujlwm rau brittle cracking. Cov hom no yog siv saum toj no tag nrho rau kev tsim cov hlab ntsha rau cov pa roj (LPG, butane thiab propane tank), cov hlab ntsha siab, qhov chaw rau chav boilers, siab piping, compressors, thiab lwm yam.
A/SA 516 Gr.70+N steel yog muab nyob rau hauv lub normalized mob. Lub normalizing kub yog 900 - 950 ºC, thiab nws yuav tsum tau muab tso rau hauv lub cub tawg tom qab kub sib npaug zos rau kwv yees li 1 feeb ib millimeter thickness ntawm lub phaj. Raws li qhov tshwm sim, nws muaj qhov txias txias zoo - tsim thiab kub - tsim cov khoom yam tsis muaj kev cuam tshuam rau cov khoom siv.
Cov hlau zoo grained hauv cov koob no tuaj yeem ua tau zoo kawg nkaus welded, ob qho tib si manually thiab siv cov khoom siv tsis siv neeg, los ntawm txhua qhov kev paub vuam txheej txheem.
Txhawm rau muab cov qauv ntawm cov khoom zoo dua qub, A/SA 516 Gr.70+N steel kuj tuaj yeem muab lub tshuab nqus tsev degassed.
Chemical Composition (Kev Ntsuas Kub) ntawm A/SA 516 Gr.70+N Steel
| Element | Kev xav tau (%) | Sau ntawv |
|---|---|---|
| Carbon (C) - Tsawg dua lossis sib npaug li 12.5mm | Tsawg dua lossis sib npaug li 0.27 | Tsawg carbon txhim kho weldability |
| Carbon (C) - 12.5-50 hli | Tsawg dua lossis sib npaug li 0.28 | |
| Carbon (C) - 50-100 hli | Tsawg dua los yog sib npaug li 0.30 | |
| Carbon (C) - 100-200 hli | Tsawg dua lossis sib npaug li 0.31 | |
| Manganese (Mn) | 0.85–1.20 | Muab lub zog thiab deoxidation |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.035 | Tightly tswj kom toughness |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.035 | |
| Silicon (Si) | 0.15–0.40 | Deoxidizer, solid{0}}cov tshuaj tiv thaiv |
Mechanical Properties of A/SA 516 Gr.70+N Steel (Normalized Condition)
| Khoom | Tus nqi (Metric) | Tus nqi (Imperial) |
|---|---|---|
| Tensile zog | 485-620 MPa | 70-90 hli |
| Yield zog (0.2% offset) | Ntau dua lossis sib npaug li 260 MPa | Ntau dua lossis sib npaug li 38 ksi |
| Elongation (2-nti ntsuas) | Ntau dua lossis sib npaug li 17% (transverse) | Ntau dua lossis sib npaug li 17% |
| Charpy V-Qhov cuam tshuam ntawm -46 degree | Ntau dua lossis sib npaug li 27 J (20 ft-lb) | Yeem, qhia meej thaum xaj |
| Hardness (HB) | Tsawg dua los yog sib npaug rau 187 raug |
Vim li cas Normalized (+N) A / SA 516 Gr.70 Hlau yog qhov tseem ceeb rau Boilers thiab cov nkoj siab
Kev qhiaA/SA 516 Gr.70+N steeles tsis yog raws li - cov khoom siv dov tsis yog qhov kev nyiam xwb - nws yog txoj cai - tsav tsheb rau ntau daim ntawv thov lub nkoj. Tshooj lus no piav qhia txog engineering rationale.
1. Txhim kho qis-Tsub Toughness
Cov hlab ntsha siab feem ntau raug kuaj hydrostatic thiab tej zaum yuav raug rau qhov kub thiab txias thaum lub sijhawm pib lossis kaw. Lub normalized grain qauv ntawmA/SA 516 Gr.70+N steelmuab cov kev tiv thaiv zoo tshaj plaws rau cov pob txha tawg, nrog Charpy qhov cuam tshuam qhov tseem ceeb tau lees paub ntawm qhov kub thiab txias li -46℃(-50℃F) thaum txiav txim nrog kev sim cuam tshuam.
2. Uniform Mechanical Properties hla Thickness
Hauv cov phaj tuab (50 hli thiab siab dua), raws li - cov khoom siv dov tuaj yeem nthuav tawm kev sib cais thiab cov khoom gradients los ntawm qhov chaw mus rau qhov chaw. Normalization homogenizes lub microstructure, kom ntseeg tau tiasyield thiab tensile zog yog zoo ib yamthoob plaws lub phaj thickness - qhov tseem ceeb rau kev txhim khu kev ruaj ntseg.
3. Kev ntxhov siab yam tsis muaj cuab yeej degradation
Cov hlab ntsha siab feem ntau yog tom qab-weld heat treated (PWHT) los txo cov kev ntxhov siab ntawm vuam. Lub normalized mob ntawmA/SA 516 Gr.70+N steelyog thermally ruaj khov; Tom qab PWHT ntawm 600-650℃tsis cuam tshuam nws cov khoom siv kho tshuab. Raws li - dov daim hlau tuaj yeem poob lub zog lossis txhim kho cov qoob loo ntau dhau thaum PWHT.
4. Ua raws li ASME Code Requirements
ASME Tshooj II, Tshooj A tau ua kom muaj kev ua haujlwm zoo rau SA516 Qib 70 daim hlau siab tshaj 40 hli hauv thickness tshwj tsis yog tias pom zoo. Tsis tas li ntawd, ntau lub boiler thiab siab hlab ntsha specifications (piv txwv li, TEMA, API 510) yuav tsum tau cov khoom ib txwm muaj rau cov kev pab cuam tseem ceeb.
A/SA 516 Gr.70+N Steel vs. Lwm Cov Qib Siab Siab
Thaum xaiv cov khoom siv rau boilers thiab cov hlab ntsha siab, engineers feem ntau sib pivA/SA 516 Gr.70+N steelnrog rau lwm cov qhab nias. Cov lus no muab ib sab -los ntawm - sab tsom xam.
| Qib | Tensile zog (MPa) | Yield zog (MPa) | Hom Impact Test Temp | Cov yam ntxwv tseem ceeb |
|---|---|---|---|---|
| SA516 Gr.70+N | 485–620 | Ntau dua lossis sib npaug li 260 | -46 degree | Txheem rau nruab nrab / qis temp nkoj |
| SA516 Gr.60+N | 415–550 | Ntau tshaj los yog sib npaug rau 220 | -46 degree | Tsawg zog, zoo sib xws toughness |
| SA537 Chav Kawm 1 | 485–620 | Ntau dua lossis sib npaug rau 345 | -62 degree | Siab zog, zoo dua qis -temp |
| SA 285 Gr.C | 380–515 | Ntau dua lossis sib npaug li 205 | Tsis raug | Tus nqi qis dua, tsis yog -cov kev pabcuam code |
| P355GH (EN) | 460–640 | Ntau dua lossis sib npaug rau 235 | 0℃rau -20 degree | European sib npaug, tsawg dua -temp |
| Q345R (GB) | 510–640 | Ntau dua lossis sib npaug rau 345 | 0℃(tus qauv) | Lub zog siab dua, txwv qis -temp |
Yuav Thov Li Cas A/SA 516 Gr.70+N Steel Phaj los ntawm GNEE Steel
Kev txiav tximA/SA 516 Gr.70+N steellos ntawm GNEE Steel yog ncaj nraim. Peb pab neeg muab qhov kawg-rau- xaus kev txhawb nqa los ntawm kev tshuaj xyuas tshwj xeeb rau kev sib koom ua haujlwm logistics.
Cov ntaub ntawv xav tau rau kev hais lus
Txhawm rau muab tus nqi raug thiab lub sijhawm xa khoom, thov xa peb:
- Phaj Dimension:Thickness (mm/in) × Dav (mm/in) × Length (mm/in) – los yog kom muaj nuj nqis hauv metric tons
- Ntim:Tus lej ntawm daim hlau lossis tag nrho qhov hnyav
- Specification:ASTM A516 lossis ASME SA516, Qib 70, + N mob
- Yeem xav tau:
Charpy impact test (kub thiab lub zog)
Ultrasonic xeem (ASTM A435 / A578)
Thib peb-kev tshuaj ntsuam xyuas (SGS, BV, TÜV)
Ntug npaj ( zeb ntug los yog trimmed)
- Chaw nres nkoj xa khoom thiab Incoterms:FOB Tianjin, CFR, CIF, lossis lub qhov rooj - mus rau - qhov rooj
Xaus: Tau Txais Koj A/SA 516 Gr.70+N Steel Quote los ntawm GNEE Steel Hnub no
A/SA 516 Gr.70+N steeltseem yog kev lag luam benchmark rau normalized carbon steel daim hlau nyob rau hauv boiler thiab siab hlab ntsha tsim. Nws qhov sib xyaw ua ke ntawm 70 ksi tensile lub zog, lav qis - qhov kub thiab txias (txog -46℃nrog rau kev kuaj pom), thiab ASME code lees txais ua rau nws muaj kev nyab xeeb, txhim khu kev qha rau cov khoom siv tiv thaiv siab.
Npaj koj qhov kev txiav txim los yog xav tau kev pab tswv yim?
GNEE Steel muab cov nqi sib tw, lub sijhawm ua haujlwm ceev, thiab kev txhawb nqa tag nrho. Txawm hais tias koj xav tau ib lub phaj hloov pauv rau qhov kev saib xyuas lossis kev txiav txim ntau rau lub chaw petrochemical tshiab, peb pab neeg muaj kev paub nyob ntawm no los pab.
👉 Tsis txhob tos - hu rau GNEE Steel tam sim no! Xa peb qhov koj xav tau thickness, qhov ntev, kom muaj nuj nqis, thiab ib qho kev xeem tshwj xeeb. Peb mam li teb nrog tus nqi zoo tshaj rau A/SA 516 Gr.70+N steel hauv 24 teev. Koj qhov project nkoj siab tsim nyog cov khoom siv zoo tshaj plaws - ntseeg GNEE Steel xa!
SA 516 GR 70 N khoom yog dab tsi?
A/SA 516 Gr. 70+N steel yog tus yam ntxwv los ntawmzoo weldability thiab siab tsis kam rau brittle cracking. Cov hom no yog siv saum toj no tag nrho rau kev tsim cov hlab ntsha rau cov pa roj (LPG, butane thiab propane tanks), cov hlab ntsha siab, qhov chaw rau chav boilers, siab piping, compressors, thiab lwm yam.
A516 qib 70 steel yog dab tsi?
ASTM A516 Gr 70 Rolled Phaj yogib tug nruab nrab carbon alloy uas muaj manganese, phosphorus, sulfur, thiab silicon. Cov ntsiab lus ntxiv alloying no muab lub zog muaj zog thiab ntau yam hauv cov ntawv thov heev xws li cov hlab ntsha siab uas yuav tsum tau qis qis rau qhov kub thiab txias qhov tsis sib haum yog qhov tseem ceeb.
Dab tsi yog qhov txawv ntawm SA 516 70 thiab SA515 GR 70?
SA-516-70 feem ntau muaj zog tensile ntau dua piv rau SA515 GR 70. Daim ntaub ntawv: SA-516-70 feem ntau yog siv rau cov hlab ntsha siab uas yuav tsum tau muaj kev pab cuam nruab nrab thiab qis dua. SA515 GR 70 yog siv rau nruab nrab thiab siab dua cov kev pabcuam kub.
Dab tsi yog cov khoom sib npaug rau A516 GR 70?
Cov sib npaug sib npaug suav nrogASME SA516 GR 70, EN 10028 P355GH, thiab BS1501 224-490 A & B, haum rau kev siv lub nkoj siab zoo sib xws.
Lub zog tensile ntawm SA 516 70N yog dab tsi?
SA 516 Gr 70N Mechanical Properties
Tensile zog:485-620 MPa (70-90 ksi)xyuas kom durability nyob rau hauv siab. Elongation: Ntau dua lossis sib npaug li 27% rau Tsawg dua lossis sib npaug li 25 hli, txhawb kev tsim.
Dab tsi yog qhov txawv ntawm ASTM A516 GR 70 thiab A36?
ASTM A516 GR 70 ua tau zoo tshaj ASTM A36 hauv lub zog tensile, qis-kub toughness, thiab siab lub nkoj siv, thaum A36 zoo dua rau kev siv cov qauv siv.. Gangsteel's ASME SA516 GR 70 daim hlau yog tsim los rau kev ntseeg siab, ua tau raws li cov qauv nruj rau kev lag luam xav tau.
