20cr kub dov seamless steel yeeb nkab txheem
| Tawm Dia | 10-813 hli |
| Phab ntsa Thickness | 1-41 hli |
| Khoom siv | Cr5Mo (T5 P5 STFA 25 STPA25 STBA25) 15CrMo (T12 P12 STFA22 STPA22 STBA22) 1.25Cr0.5Mo (T11 P11 STFA23 STPA23 STBA23) Cr9Mo (T9 P9 STFA26 STPA26 STBA26) 12Cr2Mo (T22 P22 10CrMo910) 10Cr9Mo1VNb (T91 P91) 12Cr1 MOV 12Cr2MoWVTiB (R102) |
| Ntev | 1-12m lossis raws li cov neeg siv khoom xav tau |
| Kev kho saum npoo | Dub pleev xim, dub kua roj vanish, pob tshab roj, epoxy txheej, thiab lwm yam. |
| Cov txheej txheem | Seamless |
| Kev siv | 1.Low thiab nruab nrab siab siab thauj mus los pipeline 2.Casing Tube 3. Boiler Yeeb Nkab 4.Petroleum thiab natural gas kev lag luam 5.Chemistry kev lag luam 6. Kev lag luam hluav taws xob |
Qib thiab tshuaj muaj pes tsawg leeg ntawm kub dov seamless steel kav
| Cov cim lag luam | Chemical composition (mass feem) (%) | |||||||||
|
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
Nb |
RE (ntau ntxiv) | |
|
Tsawg dua los yog sib npaug |
||||||||||
|
20 |
0.17-0.24 |
0.17-0.37 |
O.35-0.65 |
0.035 |
0.035 |
0.25 |
O.25 |
0.20 |
|
|
|
35 |
0.32-0.40 |
O.17-O.37 |
O.50-O.80 |
O.035 |
O.035 |
O.25 |
O.25 |
O.20 |
|
|
|
45 |
0.42-0.50 |
O.17-O.37 |
O.50-O.80 |
O.035 |
0.035 |
0.25 |
O.25 |
0.20 |
|
|
|
27 Sib |
O.24-O.32 |
1.10-1.40 |
1.10-1.40 |
0.035 |
0.035 |
0.030 |
0.030 |
0.030 |
|
|
|
30 MnBRE |
0.27-O.36 |
O.20-0.60 |
1.20-1.60 |
0.035 |
0.035 |
0.030 |
0.030 |
0.030 |
0.020-0.050 |
0.02-O.04 |
Mechanical zog ntawm kub dov seamless steel kav rau hydraulic props
| Cov cim lag luam | Qauv kev kho cua sov |
tensile zog os/MPa |
Yield point o s/MPa |
Elongation δ 5(%) |
tus nqi txo hauv cheeb tsam (%) |
cuam tshuam nqus zog Aku2/J |
Cov yeeb nkab steel annealed muab cov xwm txheej Brinell hardness HBS Tsawg dua lossis sib npaug |
|
Ntau dua lossis sib npaug |
|||||||
|
20 |
|
400 |
245 |
20 |
|
|
|
|
35 |
51O |
305 |
17 |
|
|
|
|
|
45 |
590 |
335 |
14 |
|
|
|
|
|
27 Sib |
(920 ± 20) degree dej quenching (450 ± 50) degree tempering Coolant: roj los yog dej |
980 |
835 |
12 |
40 |
39 |
217 |
|
30 MnNbRE |
(880 ± 20) degree dej quenching (450 ± 50) degree tempering coolant: cua txias |
850 |
720 |
13 |
45 |
48 |
|
