Biraha birta aan lahayni waa bir alwaax sare leh kuwaas oo iska caabbinta daxalka sare leh marka loo eego birta kale taas oo ay ugu wacan tahay joogitaanka xaddi badan oo chromium ah oo u dhexeeya 4 ilaa 30%.Biraha birta ah waxaa loo kala saaraa martensitic, ferritic iyo austenitic oo ku salaysan qaabdhismeedkooda crystalline.Gudaha addititon, waxay sameeyaan koox kale oo loo yaqaan birta adag ee roobka, kuwaas oo isku jira birta martensitic iyo austenitic.
347H tuubo aan bir lahayn oo duuban
Xaashidan xogeed ee soo socota ayaa bixin doonta tafaasiil dheeraad ah oo ku saabsan darajada 347H birta aan lahayn, kaas oo xoogaa ka adag darajada 304 birta.
347H tuubo aan bir lahayn oo duuban
Jadwalka soo socdaa waxa uu tusinayaa isku dhafka kiimikaad ee darajada 347H birta aan lahayn.
347H tuubo aan bir lahayn oo duuban
| Curiyaha | Waxa ku jira (%) |
|---|---|
| Birta, Fe | 62.83 - 73.64 |
| Chromium, Cr | 17 - 20 |
| Nickel, Ni | 9 – 13 |
| Manganese, Mn | 2 |
| Silikoon, Si | 1 |
| Niobium, Nb (Columbium, Cb) | 0.320 – 1 |
| Kaarboon, C | 0.04 - 0.10 |
| Fosfooraska, P | 0.040 |
| Sulfur, S | 0.030 |
Guryaha Jirka
347H tuubo aan bir lahayn oo duuban
Astaamaha jireed ee darajada 347H birta aan la taaban karin ayaa lagu bixiyay shaxda soo socota.
| Guryaha | Metric | Imperial |
|---|---|---|
| Cufnaanta | 7.7 - 8.03 g/cm3 | 0.278 - 0.290 lb/in³ |
347H tuubo aan bir lahayn oo duuban
Guryaha Makaanikada
Astaamaha makaanikada ee darajada 347H birta aan la taaban karin ayaa lagu muujiyay shaxda soo socota.
| Guryaha | Metric | Imperial |
|---|---|---|
| Xoogga xajinta, ugu dambeeya | 480 MPa | 69600 psi |
| Xoog xajin, dhalid | 205 MPa | 29700 psi |
| Xoog dilaaca (@750°C/1380°F, wakhtiga 100,000 saacadood) | 38-39 MPa, | 5510 - 5660 psi |
| modules laastikada | 190 - 210 GPA | 27557 – 30458 ksi |
| Saamiga Poisson | 0.27 - 0.30 | 0.27 - 0.30 |
| Dheeraynta xilliga nasashada | 29% | 29% |
| Adag, Brinell | 187 | 187 |
Astaamaha kale ee u dhigma darajada 347H birta aan la taaban karin waxaa ka mid ah kuwan soo socda:
- ASTM A182
- ASTM A213
- ASTM A240
- ASTM A249
- ASTM A271
- ASTM A312
- ASTM A336
- ASTM A376
- ASTM A403
- ASTM A430
- ASTM A479
- ASTM A813
- ASTM A814
- SAE 30347H
Waqtiga boostada: Jul-01-2023