ASTM A514 Qib Fyog qhov siab - tawm los, quenched thiab tempered alloy steel phaj feem ntau yog siv rau kev siv cov qauv uas qhov hnyav txuag thiab siab zog yog qhov tseem ceeb. Nws yog ib feem ntawm tsev neeg ntawm cov hlau feem ntau raug xa mus los ntawm lub npe lag luam T-1 steel.
Ntsiab Specifications
Yield Strength: Yam tsawg kawg 100 ksi (kwv yees . 690 MPa) rau thicknesses txog 2.5 ntiv tes.
Tensile Strength: Feem ntau 110-130 ksi.
Qhov xwm txheej: Muab xa mus rau hauv lub xeev quenched thiab tempered kom ua tiav nws siab - lub zog thiab cov khoom siv tawv tawv.
Thickness Range: Tus qauv muaj rau Qib F yog feem ntau mus txog 2.5 nti (63.5 mm).
Daim ntawv thov
Vim nws lub zog siab - rau - qhov hnyav piv thiab tiv thaiv cov kab nrib pleb hauv huab cua txias, nws feem ntau siv rau hauv:
Khoom hnyav: crane booms, mining tsheb lub cev, thiab loaders.
Infrastructure: Welded choj thiab lub tsev thav duab.
Kev Thauj Khoom: Cov tsheb hnyav hnyav, chassis, thiab thauj cov tsheb thauj khoom.
Lub zog tawm los ntawm A514 Qib F yog dab tsi?
Yam tsawg kawg nkaus Yield Strength ntawm A514 Qib F (ib ASTM A514 / A514M):
Lub zog tawm los yog teev rau ob lub thickness ntau:
Rau thicknesses Tsawg dua los yog sib npaug rau 1.25 nti (31.75 mm):
100 ksi (690 MPa)
Rau thicknesses> 1.25 in. mus txog 2.5 in. (31.75 mm txog 63.5 mm):
90 ksi (620 MPa)
Critical Technical Context:
Qhov xwm txheej: Qhov no yog qhov tsawg kawg nkaus lub zog tawm los ntawm 0.2% offset rau cov khoom nyob rau hauv quenched thiab tempered (Q&T) mob.
Tensile Strength: Lub zog tensile sib thooj yog 110-130 ksi (760-895 MPa) rau thickness Tsawg dua los yog sib npaug rau 1.25 in., thiab 100-130 ksi (690-895 MPa) rau cov tuab tuab.
Core Distinction los ntawm Qib E: Thaum cov khoom siv lub zog muaj txiaj ntsig zoo ib yam rau A514 Qib E, Qib F ua tiav lawv nrog kev hloov kho, leaner alloy chemistry (qis carbon, tsis muaj boron). Qhov no ua rau qis dua carbon sib npaug (CE), muab Qib F zoo dua weldability thiab txo qhov tawg rhiab heev thaum tsim khoom.
Tsim Kev Txhim Kho: Rau kev tsim vaj tsev thiab tsim, cov thickness siv tau yuav tsum tau lees paub, thiab tus nqi 90 ksi yuav tsum tau siv rau cov ntu tuab dua 1.25 ntiv tes.
Khoom Siv Chemistry
|
SI |
FE |
MN |
CR |
MO |
TSI |
B |
V |
C |
|
0.28% |
98.0% |
0.85% |
0.48% |
0.2% |
0.02% |
0.003% |
0.05% |
0.27 – 0.30% |
Yield / Tensile zog
|
Metric |
Imperial |
|
|
Tensile Strength, Qhov kawg |
760-895 MPa |
110,000 - 130,000 psi |
|
Tensile zog, tawm los |
690 MPa ua |
100,000 psi |
|
Elongation ntawm Break (hauv 50 mm) |
18% |
18% |
|
Modulus Elasticity |
190-210 GPa |
27,557-30,458 ksi |
|
Bulk Modulus (Tswj rau Steel) |
140 GPa |
203,000 ksg |
|
Poissons Ratio |
0.27 – 0.30 |
0.27 – 0.30 |
|
Shear Modulus (Tswj rau Steel) |
80 gpa ua |
116,000 ksi |
1. Dab tsi yog A514 Qib F steel siv rau?
A514 Qib F feem ntau yog siv rau hauv siab - muaj zog cov qauv siv xws li cov khoom siv hnyav, crane booms, mining machinery, thiab txuas hniav uas yuav tsum muaj lub zog zoo tshaj - rau - qhov hnyav piv.
2. Lub zog tawm ntawm A514 Qib F yog dab tsi?
Rau cov phaj siab txog 1.25 ntiv tes (31.75 hli) tuab, qhov tsawg kawg nkaus lub zog yog 100 ksi (690 MPa). Rau cov phaj tuab, lub zog tawm los txo qis, feem ntau mus txog 90 ksi (620 MPa) txog 2.5 ntiv tes.
3. A514 Qib F puas tuaj yeem welded?
Yog lawm, nws tuaj yeem welded, tab sis nws yuav tsum muaj cov txheej txheem nruj xws li preheating, siv qis -hydrogen electrodes, thiab feem ntau tshaj tawm -weld tshav kub kho kom tsis txhob tawg vim nws cov hardenability siab.
4. A514 Qib F txawv li qib E li cas?
Qhov sib txawv tseem ceeb yog nyob rau hauv chemistry: Qib F muaj qis carbon thiab alloy cov ntsiab lus (thiab tsis muaj boron), uas ua rau weldability zoo dua thiab qis dua carbon sib npaug, thaum ob qib muab tib yam tsawg kawg nkaus yield zog.
5. Lub hardness ntawm A514 Qib F yog dab tsi?
Lub hardness ntau yam rau A514 Qib F yog kwv yees li HBW 280-340 (Brinell) lossis HRC 29-36, tab sis hardness tsis yog cov cuab yeej teev hauv ASTM tus qauv.
6. Puas yog A514 Qib F zoo ib yam li T1 steel?
Yog lawm, A514 Qib F feem ntau raug xa mus rau "T1 Hom F" lossis "hloov T1." Lub npe "T1" Ameslikas los ntawm cov cim lag luam, tab sis feem ntau nws yog siv rau tsev neeg ntawm siab - lub zog, quenched thiab tempered steels.
7. Cov European sib npaug ntawm A514 Qib F yog dab tsi?
Qhov sib npaug European ze tshaj plaws yog S690QL lossis S690Q / QL1 raws li EN 10025-6, uas muaj qhov zoo sib xws 690 MPa yield zog thiab quenched & tempered mob.
8. Koj puas tuaj yeem nplaim hluav taws txiav A514 Qib F?
Yog lawm, tab sis nws yuav tsum tau ua kom sov (feem ntau 300-500℃F) thiab tswj kom txias kom tsis txhob tawv thiab tawg ntawm ntug txiav. Plasma lossis waterjet txiav yog feem ntau nyiam lwm txoj hauv kev.
9. Cov tshuaj muaj pes tsawg leeg ntawm A514 Qib F yog dab tsi?
Nws muaj cov ntsiab lus qis dua (max 0.20%) piv rau Qib E, nrog rau kev txo qis ntawm chromium, molybdenum, thiab tsis muaj boron, uas ua rau qis carbon sib npaug rau kev txhim kho weldability.
10. Vim li cas thiaj xaiv A514 Qib F dhau qib E?
Xaiv Qib F thaum weldability thiab fabrication yooj yim yog qhov tseem ceeb tshaj plaws rau cov qauv complex, raws li nws cov leaner chemistry txo qhov kev pheej hmoo ntawm vuam -txog tawg piv rau qib siab dua - alloy Qib E.
Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.
