ASTM A572 longitudinal welded steel kav yog siab -lub zog qis- alloy structural steel hlab uas yog lawv lub zog siab thiab zoo weldability. Los ntawm kev ntxiv me me ntawm cov ntsiab lus alloying (xws li vanadium, niobium, thiab lwm yam), cov hlau no ua tiav lub zog siab dua thaum txo qhov hnyav los ntawm 15% -20% piv rau cov pa roj carbon zoo tib yam rau qhov sib npaug ntawm cov kabmob. Qhov no ua rau lawv nrov tshwj xeeb hauv kev tsim kho thiab kev siv choj.
Specification
Loj: OD: 406-1422.40mm WT: 1.65-40mm, Ntev: 6mtr-20mtr
Txheem & Qib: ASTM A572 Qib 42, 50, 55, 60, 65
Xaus: Square Ends / Plain Ends (ncaj txiav, saw txiav, taws txiav), Beveled / threaded Ends
Txheej: 3PE txheej; 3PP txheej; FBE txheej; Epoxy txheej; tshwj xeeb pleev xim
Tshuaj muaj pes tsawg leeg
|
Hom A |
Cov ntsiab lus |
Kev ntsuas kub,% |
|
1 |
Columbium |
0.005-0.05B |
|
2 |
Vanadium |
0.01-0.15C |
|
3 |
Columbium |
0.005-0.05B |
|
4 |
Vandadium |
0.01-0.15C |
|
5 |
Columbium ntxiv rau vanadium |
0.02-0.15D |
|
6 |
Titanium |
0.006-0.04 |
|
7 |
Nitrogen |
0.003-0.015 |
|
8 |
Vanadium |
0.06 max |
A: Cov ntsiab lus alloy yuav tsum ua raws li Hom 1, 2, 3, lossis 5 thiab yuav tsum nyob rau hauv daim ntawv xeem.
B: Cov khoom lag luam tsom xam txwv=0.004 rau 0.06%.
C: Kev tsom xam cov khoom txwv=0.005 rau 0.17%.
D: Kev tsom xam cov khoom txwv=0.01 rau 0.16%.
Mechanical Properties
|
Qib |
Yield Point, min |
Tensile zog, min |
Tsawg kawg Elongation, % B, C, D |
|||
|
kis |
[MPa] |
ksi ua |
[MPa] |
ua 8in [200 hli] |
ua 2in [200 hli] |
|
|
42 [290] |
42 |
[290] |
60 |
[415] |
20 |
24 |
|
50 [345] |
50 |
[345] |
65 |
[450] |
18 |
21 |
|
55 [380] |
55 |
[380] |
70 |
[485] |
17 |
20 |
|
60 [415] |
60 |
[415] |
75 |
[520] |
16 |
18 |
|
65 [450] |
65 |
[450] |
80 |
[550] |
15 |
17 |
A: Cov qauv yuav tsum ua raws li Specification ntawm A6 / A6M.
B: Elongation tsis tas yuav txiav txim siab rau pem teb phaj.
C: Rau cov duab flange dav dua 426 lb/ft [634 kg/m], elongation hauv 2 in. [50 mm] ntawm 19% yam tsawg kawg nkaus siv.
D: Rau daim hlau dav dua 24 in. [600 mm], qhov yuav tsum tau elongation yog txo ob feem pua ntawm cov qhab nia rau Qib 42, 50, thiab 55 [290,345, thiab 380], thiab peb feem pua cov ntsiab lus rau Qib 60 thiab 65 [415 thiab 450]. Saib elongation yuav tsum tau hloov nyob rau hauv lub Tension Tests seem ntawm Specification A6/A6M.
GNEE ASTM A572 LSAW steel yeeb nkab kev muag khoom
