SA302GrB po'lat plitasi bosimli idishlar uchun Amerika standarti marganets-molibden qotishma po'lat plastinka. SA302GrB bosimli idishlar turli bosimli idishlar va quvvatlarga ega bo'lishi kerak. Bosim kuchi odatda 314Mpa yoki undan yuqori. SA302GrB po'lat plitalarining ish harorati ko'pincha - 20 darajadan 450 darajagacha.
ASME SA302 po'lat Kimyoviy tarkibi (%):
|
Baholar |
C |
Mn |
Si |
Mo |
Ni |
|
SA302 Gr.A |
0.25 |
0.035 |
0.13-0.45 |
0.41-0.64 |
--- |
|
SA302 Gr.B |
0.25 |
0.035 |
0.13-0.45 |
0.41-0.64 |
--- |
|
SA302 Gr.C |
0.25 |
0.035 |
0.13-0.45 |
0.41-0.64 |
0.37-0.73 |
|
SA302 Gr.D |
0.25 |
0.035 |
0.13-0.45 |
0.41-0.64 |
0.67-1.03 |
ASME SA302 po'latdan mexanik xususiyatlari:
|
Baho |
SA302 Gr.A |
SA302 Gr.B |
SA302 Gr.C |
SA302 Gr.D |
|
Mustahkamlik chegarasi |
515 - 655 MPa |
550 - 690 MPa |
550 - 690 MPa |
550 - 690 MPa |
|
Hosildorlik kuchi |
310 MPa |
345 MPa |
345 MPa |
345 MPa |
|
Uzayishi |
15% min |
15% min |
17% min |
17% min |
|
Uzayishi |
19% min |
18% min |
20% min |
20% min |
