ASTM A514 Qib B thiab Q690E yog ob qho tib si siab - lub zog, quenched & tempered (Q&T) alloy steels rau cov qauv hnyav, tab sis A514 Gr B yog tus qauv Asmeskas (ASTM) nrog ~ 690 MPa yield zog, thaum Q690E yog Suav tus qauv (GB / T), feem ntau siv rau kev siv zog tsawg dua {6} txuas hniav, cranes, thiab cov tshuab hnyav uas muaj lub zog siab thiab kev cuam tshuam tsis zoo yog qhov tseem ceeb. Qhov sib txawv tseem ceeb nyob hauv lawv cov qauv kev tswj hwm thiab cov khoom sib xyaw tshwj xeeb (xws li chromium / molybdenum rau qhov tawv), txawm hais tias lawv ua haujlwm zoo sib xws - daim ntawv thov kev ua tau zoo.
Tshuaj muaj pes tsawg leeg ntawm A514 GR B
|
Element |
Ladle Analysis (%) |
Kev txheeb xyuas cov khoom (%) |
|---|---|---|
|
Cov pa roj carbon (C) |
0.12-0.21 |
0.10-0.23 |
|
Manganese (Mn) |
0.70-1.00 |
0.66-1.04 |
|
Phosphorus (P) |
0.035 max |
0.043 max |
|
Sulfur (S) |
0.035 max |
0.043 max |
|
Silicon (Si) |
0.40-0.80 |
0.35-0.85 |
|
Chromium (Cr) |
0.40-0.65 |
0.35-0.70 |
|
Molybdenum (hli) |
0.15-0.30 |
0.12-0.33 |
|
Vanadium (V) |
0.03-0.08 |
0.01-0.10 |
|
Boron (B) |
0.0005-0.005 |
0.0000-0.0055 |
Tshuaj muaj pes tsawg leeg ntawm Q690E
|
Qib |
Chemical xav tau los yog cov khoom Max % |
|||||||||||||
|
|
C |
Si |
Mn |
P |
S |
Cu |
Cr |
Ni |
Mo |
B |
V |
Nb |
Ti |
|
|
Q690E |
0.2 |
0.8 |
1.7 |
0.020 |
0.010 |
0.5 |
1.5 |
2 |
0.7 |
0.005 |
0.12 |
0.06 |
0.0 |
|
Mechanical Properties ntawm A514 GR B
|
Thickness (hli) |
Yield zog (min, ksi / MPa) |
Tensile zog (ksi / MPa) |
Elongation (min, % hauv 2") |
Hardness (Brinell, HBW) |
Charpy V-Txoj kev cuam tshuam (min, ft-lb ntawm -20℃F) |
|---|---|---|---|---|---|
|
Mus txog 2.5 |
100 / 690 |
110-130 / 760-895 |
18 |
235-293 |
20 (ntxiv) |
|
2.5 rau 6 |
90 / 620 |
100-130 / 690-895 |
16 |
235-293 |
20 (ntxiv) |
Mechanical Properties ntawm Q690E
|
Qib |
Khoom |
Impact test |
|||||||||
|
Q690E |
Yield Mpa Min |
Tensile Mpa |
Elongation |
Min J |
|||||||
|
Thickness hli |
Thickness hli |
Qib |
|||||||||
|
50 |
50-100 |
100-150 |
50 |
50-100 |
100-150 |
% |
0 |
-20 |
-40 |
-60 |
|
|
690 |
650 |
630 |
770-940 |
710-900 |
14 |
|
|
37 |
|
||
ASTM A514 Qib B
Hom: Quenched & Tempered Alloy Steel Phaj.
Lub zog: Yam tsawg kawg nkaus lub zog ntawm 100 ksi (690 MPa).
Khoom: Lub zog siab, zoo formability, thiab toughness, feem ntau nrog xaiv Charpy V-notch impact testing.
Siv: Cov tshuab hnyav, cov cuab yeej siv tsim kho, crane booms, tsheb thav duab, txuas hniav, thiab nqa mobile.
Q690E (GB/T 16270)
Hom: Suav siab -lub zog, nplua-cov khoom siv hlau (Q&T).
Lub zog: Yam tsawg kawg nkaus lub zog ntawm 690 MPa.
Khoom: Zoo heev qis- kub toughness (feem ntau kuaj rau -40℃los yog qis dua), weldability zoo, zoo-grain qauv.
Kev Siv: Zoo ib yam li siab - cov ntawv thov kev ntxhov siab xws li A514, suav nrog hnyav- cov tshuab ua haujlwm, txuas hniav, thiab cov qauv sab nrauv, tshwj xeeb tshaj yog nyob rau hauv huab cua txias.
Kev sib piv
Qib Lub Zog: Lawv ua haujlwm sib npaug ntawm lawv cov 690 MPa yam tsawg kawg nkaus lub zog.
Toughness: Q690E feem ntau hais txog qhov tsis tshua muaj siab tshaj - qhov kub thiab txias cuam tshuam vim nws qhov tshwj xeeb alloying, ua rau nws zoo tagnrho rau huab cua txias.
Cov Qauv: A514 yog ASTM (US), thaum Q690E yog GB / T (Tuam Tshoj).
Daim ntawv thov: Ob qho tib si yog cov kev xaiv saum toj kawg nkaus rau hnyav, hnyav- cov qauv rhiab heev uas yuav tsum tau muaj peev xwm thauj khoom siab thiab tiv thaiv kev cuam tshuam, xws li cranes thiab cov khoom loj.
