ASTM A285 Qib A thiab C yog carbon steel daim hlau rau welded siab hlab ntsha, sib txawv feem ntau ntawm lub zog thiab cov ntsiab lus carbon, nrog Qib C muaj zog (siab dua tensile / tawm los) tab sis tsawg dua ductile (qis elongation) dua qib A, uas muaj zoo formability rau qis dua - siab siv, thaum Qib C suits siab dua.
Tshuaj muaj pes tsawg leeg ntawm ASTM A285 Qib A
|
Element |
Kev sib xyaw (%) |
|---|---|
|
Cov pa roj carbon (C) |
0.17 max |
|
Manganese (Mn) |
0.90 max |
|
Phosphorus (P) |
0.035 max |
|
Sulfur (S) |
0.035 max |
Tshuaj muaj pes tsawg leeg ntawm ASTM A285 Qib c
|
Qib |
Chemical Composition (%) |
||||
|
C max |
Mn max |
Si |
P max |
Smax |
|
|
A285 Qib C
|
0.28 |
0.98 |
- |
0.035 |
0.03 |
Mechanical Properties ntawm ASTM A285 Qib A
|
Khoom |
Tus nqi |
|---|---|
|
Tensile zog |
45-65 ksi (310-450 MPa) |
|
Yield zog |
24 ksi (165 MPa) min |
|
Elongation (hauv 200mm) |
27% min |
|
Elongation (hauv 50mm) |
30% min |
Mechanical Properties ntawm ASTM A285 Qib C
|
Qib |
Mechanical Property |
|
|||
|
Tensile zog (MPa) |
Yield zog (MPa) |
% Elongation hauv 2 nti (50mm) min |
Impacting Test Temperature (degree) |
|
|
|
A285 Qib C
|
380-515 |
205 |
25 |
-20,40,-60 |
|
Qhov sib txawv tseem ceeb: Qib C muaj cov txiaj ntsig tsawg dua (205 MPa vs . 165 MPa) thiab tensile (380-515 MPa vs . 310-450 MPa) lub zog, thiab qis elongation (23-27% vs . 27-30%), nrog Qib C kuj muaj cov pa roj carbon ntau dua (0.28% max% vs{7}).
ASTM A285 Qib A
Lub zog: qis zog (Tensile: 45-65 ksi / 310-450 MPa; Tawm los: min 24 ksi / 165 MPa).
Ductility: Siab dua elongation (min 27% hauv 8 ").
Cov pa roj carbon monoxide: Cov ntsiab lus qis dua (max 0.17%), txhawb kev tsim kho kom zoo thiab weldability rau cov ntawv thov tsawg dua.
Qhov zoo tshaj plaws rau: qis dua -siab, kev siv yooj yim dua qhov twg formability yog qhov tseem ceeb, zoo li qee lub tank cia.
ASTM A285 Qib C
Lub zog: siab zog (Tensile: 55-75 ksi / 380-515 MPa; Tawm tawm: min 30 ksi / 205 MPa).
Ductility: Tsawg elongation (min 23% hauv 8 ").
Carbon: Cov ntsiab lus carbon ntau dua (max 0.28%), ua rau nws muaj zog ntxiv.
Qhov zoo tshaj plaws rau: Kev siv siab dua thiab kub, ua rau nws xaiv ntau tshaj plaws rau boilers thiab kub exchangers.
