API 5Ltuubo bir ah oo dhuumo ah
Heerka birta: L360 ama X52 (PSL1)
Shuruudaha Halabuurka Kiimikada:
C: ≤0.28 (aan tolnayn) ≤0.26 (la alxamayn)
Mn: ≤1.40
B: ≤0.030
S: ≤0.030
Cu: 0.50 ama ka yar
Ni: ≤0.50
Cr: ≤0.50
Bisha: ≤0.15
*V+Nb+Ti: ≤0.15
* Maaddada Manganese waxaa lagu kordhin karaa 0.05% hoos u dhac kasta oo ku yimaada kaarboonka 0.01%, ilaa ugu badnaan 1.65%
Shuruudaha sifooyinka farsamada:
Xoogga wax soo saarka: ≥360Mpa
Xoogga jiidista: ≥460Mpa
Xoogga laalaabka ee tuubada birta ah ee laalaaban: ≥460Mpa
Dheeraynta: ≥1940* AXC0.2/4600.9 , halkaas oo AXC ay tahay aagga isgoyska ee muunadda la riixo
Dulqaadka dhexroorka dibadda ee tuubada birta ah:
| Dhexroorka dibadda D mm | Dhamaadka leexashada dhexroorka dibadda mm | |
| tuubo bir ah oo aan xuduud lahayn | Tuubo bir ah oo la alxanka | |
| < 60.3 | -0.8, +0.4 | |
| 60.3 D ama ka yar 168.3 ama ka yar | -0.4, +1.6 | |
| 168.3 < D≤610 | ±0.005D, laakiin ugu badnaan ±1.6 | |
| 610 < D≤1422 | + / - 2.0 | + / - 1.6 |
| > 1422 | Heshiis ahaan | |
Derbiga dhumucdiisuna waa dulqaad of bir tuubo:
| Dhumucda derbiga t mm | Dulqaad mm |
| tuubo bir ah oo aan xuduud lahayn | |
| 4.0 ama ka yar | +0.6, -0.5 |
| 4 < t < 25 | +0.150t, -0.125t |
| 25 ama ka sareeya | +3.7 ama +0.1t, midkii ka weyn -3.0 ama -0.1t, wuxuu qaataa kan ka weyn |
| Tuubo la alxanka | |
| 5.0 ama ka yar | + / - 0.5 | |
| 5.0 | < t < 15 | Lagu daray ama laga jaray 0.1 t |
| 15 | ama ka badan | + / - 1.5 |
Bir darajo: L360N or X52N(PSL2)
Kiimiko halabuurka shuruudaha:
C: ≤0.24
Si: ≤0.45
Mn: ≤1.40
B: ≤0.025
S: ≤0.015
V: ≤0.10
F.G.:≤0.05
Ti: ≤0.04
Cu: ≤0.50
Ni: ≤0.30
Cr: ≤0.30
Bisha: ≤0.15
V+Nb+Ti: ≤0.15
* Maaddada Manganese waxaa lagu kordhin karaa 0.05% hoos u dhac kasta oo ku yimaada kaarboonka 0.01%, ilaa ugu badnaan 1.65%.
* Lama oggola in si ula kac ah loogu daro boron, haraaga B≤0.001%
Kaarboon u dhigma:
CEP cm: ≤0.25
CEIIW : ≤0.43
* Isticmaal CE marka kaarboonku ka badan yahay 0.12%, oo isticmaal CE IIW marka P cm-ka kaarboonku ka yar yahay ama la mid yahay 0.12%.
CEP cm = C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B
Haddii natiijada falanqaynta dhalaalka ee B ay ka yar tahay 0.0005%, markaa looma baahna in lagu daro falanqaynta curiyaha B falanqaynta badeecada, iyo waxa ku jira B waxaa loola dhaqmi karaa eber marka la xisaabinayo CEP cm oo u dhiganta kaarboonka.
CEIIW =C+Mn/6 (C+Mo+V)/5+(Ni+Cu)/ 15
Farsamada guryaha shuruudaha:
Xoogga wax soo saarka: 360-530Mpa
Xoogga jiidista: 460-760Mpa
Saamiga wax soo saarka: ≤0.93 (kaliya waxaa lagu dabaqi karaa tuubo bir ah oo ka badan 323.9mm D)
Xoogga laalaabka ee tuubada birta ah ee laalaaban: ≥460Mpa
Kordhinta ugu yar: = 1940* AXC0.2/4600.9 , halkaas oo AXC ay tahay aagga isgoyska ee muunadda la riixo.
Tijaabada saameynta CVN ee tuubada
Heerkulka tijaabada 0 .C
| Cadee dhexroorka dibadda ee D mm | CVN cabbir buuxaTamarta la nuugoKVJ |
| 508 ama ka yar | 27 |
| > 508 ilaa 762 | 27 |
| > 762 ilaa 914 | 40 |
| > 914 ilaa 1219 | 40 |
| > 1219 ilaa 1422 | 40 |
| > 1422 ilaa 2134 | 40 |
Dibadda dhexroor dulqaad of bir tuubo:
| Dhexroorka dibadda D mm | Dhammaadka leexashada dhexroorka dibadda | |
| tuubo bir ah oo aan xuduud lahayn | Tuubo bir ah oo la alxanka | |
| < 60.3 | -0.4, +0.8 | |
| 60.3 D ama ka yar 168.3 ama ka yar | -0.4, +1.6 | |
| 168.3 < D=610 | ±0.005D, laakiin ugu badnaan ±1.6 | |
| 610 < D=1422 | + / - 2.0 | + / - 1.6 |
| > 1422 | Heshiis ahaan | |
Derbiga dhumucdiisuna waa dulqaad of bir tuubo:
| Dhumucda derbiga t mm | Dulqaadka |
| tuubo bir ah oo aan xuduud lahayn | |
| 4.0 ama ka yar | +0.6, -0.5 |
| 4 < t < 25 | +0.150t, -0.125t |
| 25 ama ka sareeya | +3.7 ama +0.1t, midkii ka weyn -3.0 ama -0.1t, qaado wax ka weyn |
| Tuubo la alxan | |
| 5.0 ama ka yar | + / - 0.5 |
| 5.0 < t < 15 | Lagu daray ama laga jaray 0.1 t |
| 15 ama ka badan | + / - 1.5 |
Waqtiga boostada: Sebteembar-26-2023
