ASTM A537 standarti bosimli idish plitalari, issiqlik bilan ishlangan, uglerod-marganets kremniyli po'latdan yasalgan materialdir. Har xil quvvat va issiqlik bilan ishlov berish asosida u 1, 2 va 3 sinflarga to'g'ri keladi.
ASTM A537 1-sinf bo‘yicha maksimal qalinligi 100 mm [4 dyuym] va 2 va 3-sinf uchun 150 mm [6 dyuym] ni tashkil qiladi.
A537 PVQ po'lat plitalar kimyoviy tarkibi:
|
Element |
Issiqlik tahlili |
Mahsulot tahlili |
|---|---|---|
|
Uglerod, maksA |
0.24 |
|
|
Marganets (Tk 40 mm dan kam yoki unga teng yoki 1-1/2 dyuym) |
0.70-1.35 |
0.64-1.46 |
|
MarganetsB |
1.00-1.60 |
0.92-1.72 |
|
Fosfor, maksA |
0.025 |
|
|
Oltingugurt, maksA |
0.025 |
|
|
Kremniy |
0.15-0.50 |
0.13-0.55 |
|
Mis, maks |
0.35 |
0.38 |
|
Nikel, maks |
0.25 |
0.28 |
|
Chromium, maks |
0.25 |
0.29 |
|
Molibden, maks |
0.08 |
0.09 |
A537 Idish po'lat plitalari mexanik xususiyati:
|
Mexanik xususiyatlar dyuym va [mm] |
1-sinf |
2-sinf |
3-sinf |
|---|---|---|---|
|
ksi [MPa] |
ksi [MPa] |
ksi [MPa] |
|
|
Mustahkamlik chegarasi |
|
|
|
|
2-1/2 dyuym va undan past |
70-90 |
80-100 |
80-100 |
|
[65 mm va undan past] |
[485-620] |
[550-690] |
[550-690] |
|
2-1/2 dan 4 dyuymgacha |
65-85 |
75-95 |
75-95 |
|
[65 dan 100 mm gacha] |
[450-585] |
[515-655] |
[515-655] |
|
4 dan 6 dyuymgacha |
A |
70-90 |
70-90 |
|
[100 dan 150 mm gacha] |
A |
[485-620] |
[485-620] |
|
Hosildorlik kuchi, min: |
|
|
|
|
2-1/2 dyuym va undan past |
50 |
60 |
55 |
|
[65 mm va undan past] |
[345] |
[415] |
[380] |
|
2-1/2 dan 4 dyuymgacha |
45 |
55 |
50 |
|
[65 dan 100 mm gacha] |
[310] |
[380] |
[345] |
|
4 dyuymdan 6 dyuymgacha |
A |
46 |
40 |
|
[100 dan 150 mm gacha] |
A |
[315] |
[275] |
|
2 dyuymdagi cho'zilish |
|||
|
[50 mm], min, %B |
22 |
22 |
22 |
|
4 dyuym, [100 mm] va undan kam |
A |
20 |
20 |
|
4 dyuym [100 mm] dan ortiq |
|||
|
8 dyuymdagi cho'zilish |
|||
|
[200 mm], min, %B |
18 |
C |
C |
Qozon po'lat plitalar mahsulot tasviri:
