|
Kev xav tau tshuaj |
||||
|---|---|---|---|---|
|
Elment |
Kev sib xyaw,% |
|||
|
Qib B |
Qib C |
|||
|
Kub |
Khoom |
Kub |
Khoom |
|
|
Cov pa roj carbon, max |
0.2 |
0.22 |
0.22 |
0.24 |
|
Manganese |
1.15-1.50 A |
1.07-1.652 A |
1.15-1.50 |
1.07-1.62 |
|
Phosphorus, max |
0.025 |
0.025 |
0.025 |
0.025 |
|
Sulfur, max |
0.025 |
0.025 |
0.025 |
0.025 |
|
Silicon |
0.15-0.50 |
0.10-0.55 |
0.15-0.50 |
0.10-0.55 |
|
Vanadium |
... |
... |
0.04-0.11 |
0.03-0.12 |
|
Columbium, max |
0.05 |
0.05 |
0.05 |
0.05 |
|
Nitrogen |
... |
... |
0.03 |
0.03 |
A. Qhov siab tshaj plaws manganese tuaj yeem nce mus rau 1.60% o ntsuas cua sov thiab 1.72% ntawm kev tshuaj xyuas cov khoom, muab cov ntsiab lus carbon ntawm kev ntsuas kub tsis tshaj 0.18%.
Mechanical Requirements
ASTM A737 daim hlau nro kuaj cov qauv yuav tsum ua raws li qhov yuav tsum tau muaj nyob rau hauv Table 2.
Rau nominal phaj thickness ntawm 3/4 nyob rau hauv. [20 mm] thiab nyob rau hauv, thaum yuav tsum tau rau elongation nyob rau hauv 2 in. [50 mm] yuav tsum tau txiav txim, lub 1 1/2 nyob rau hauv. [40 mm] wide rectangular Cov qauv tuaj yeem siv rau kev ntsuas nro, thiab qhov elongation yuav raug txiav txim siab hauv 2 hauv. [50 mm] gage ntev uas suav nrog cov pob txha thiab qhov uas qhia tau tias qhov elongation loj tshaj plaws.
|
Tensile Requirements |
||
|---|---|---|
|
|
Qib B |
Qib C |
|
Yield zog, min, ksi [MPa] |
50 [345] |
60 [415] |
|
Tensile zog, ksi [MPa] |
70-90 [485-620] |
80-100 [550-690] |
|
Elongation hauv 8 nti [200 mm], min, %A |
18 |
18 |
|
Elongation hauv 2 nti [50 mm], min, %A |
23 |
23 |
ASaib Specification A20 / A20M rau kev hloov kho elongation.
Cim npe nrov: Tuam Tshoj ASTM A737 Qib B, C daim hlau, Tuam Tshoj, lwm tus neeg, manufacturers, hoobkas
