API 5Ldhuunta birta birta
Heerka birta: L360 ama X52 (PSL1)
Shuruudaha ka kooban kiimikada:
C: ≤0.28(laxaad la'aan) ≤0.26(welded)
Mn: ≤1.40
P: ≤0.030
S: ≤0.030
Cu: 0.50 ama ka yar
Ni: ≤0.50
C: ≤0.50
Mo: ≤0.15
*V+Nb+Ti: ≤0.15
* Waxa ku jira manganese waxa lagu kordhin karaa 0.05% 0.01% kasta oo la dhimo kaarboonka, ilaa ugu badnaan 1.65%
Shuruudaha guryaha makaanikada:
Awoodda wax-soo-saarka: ≥360Mpa
Xoogga xajinta: ≥460Mpa
Quwadda xajinta ee tuubada birta welded: ≥460Mpa
Kordhinta: ≥1940* AXC0.2/4600.9 , halkaas oo AXC ay tahay qaybta isdhaafka ah ee muunada xajinta
U adkaysiga dhexroorka dibadda ee tuubada birta:
| Dhexroorka dibadda D mm | Dhamaadka dhexroorka ka baxsan weecan mm | |
| Dhuumaha birta ah ee aan cillad lahayn | Dhuumaha birta alxanka leh | |
| < 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 | |
Darbiga dhumucdiisuna dulqaadasho of bir tuubo:
| Dhumucda gidaarka t mm | Dulqaad mm |
| Dhuumaha birta ah ee aan cillad lahayn | |
| 4.0 ama ka yar | +0.6, -0.5 |
| 4 <t < 25 | +0.150t, -0.125t |
| 25 ama ka badan | +3.7 ama +0.1t, hadba kii ka weyn -3.0 ama -0.1t, qaado ka weyn |
| Tuubo alxan | |
| 5.0 ama ka yar | + / - 0.5 | |
| 5.0 | <t <15 | Lagu daro ama laga jaray 0.1 t |
| 15 | ama ka badan | + / - 1.5 |
Birta darajo: L360N or X52N(PSL2)
Kiimiko halabuurka shuruudaha:
C: ≤0.24
Si: ≤0.45
Mn: ≤1.40
P: ≤0.025
S: ≤0.015
V: ≤0.10
Nb:≤0.05
Ti: ≤0.04
Cu: ≤0.50
Ni: ≤0.30
C: ≤0.30
Mo: ≤0.15
V+Nb+Ti: ≤0.15
* Waxa ku jira manganese waxa lagu kordhin karaa 0.05% 0.01% kasta oo la dhimo kaarboonka, ilaa ugu badnaan 1.65%.
* Lama ogola in si ula kac ah loogu daro boron, haraaga B≤0.001%
Kaarboon u dhiganta:
CEP cm: ≤0.25
CEIIW: ≤0.43
Isticmaal CE marka waxa ku jira kaarboonku ka weyn yahay 0.12%, isticmaal CE IIW marka Pcm 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 dhalaalidda ee B ay ka yar tahay 0.0005%, markaa looma baahna in lagu daro falanqaynta curiyaha B ee falanqaynta alaabta, iyo waxa ku jira B waxaa loola dhaqmi karaa eber ee xisaabinta kaarboon ee u dhiganta CEP cm.
CEIIW =C+Mn/6 (C+Mo+V)/5+(Ni+Cu)/ 15
Makaanik guryaha shuruudaha:
Awoodda wax-soo-saarka: 360-530Mpa
Xoog xajin: 460-760Mpa
Saamiga wax-soo-saarka: ≤0.93 (kaliya ayaa lagu dabaqi karaa D> 323.9mm tuubo bir ah)
Quwadda xajinta ee tuubada birta welded: ≥460Mpa
Kordhinta ugu yar: = 1940 * AXC0.2 / 4600.9, halkaas oo AXC ay tahay qaybta isdhaafka ah ee muunada xajinta.
Baaritaanka saameynta CVN ee tuubada
Tijaabi heerkulka 0.C
| Sheeg dhexroor ka baxsan D mm | Cabbirka buuxa ee CVNTamar 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 dhexroorka dulqaadasho of bir tuubo:
| Dhexroorka dibadda D mm | Dhammaadka leexashada dhexroorka dibadda | |
| Dhuumaha birta ah ee aan cillad lahayn | Dhuumaha birta alxanka leh | |
| < 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 | |
Darbiga dhumucdiisuna dulqaadasho of bir tuubo:
| Dhumucda gidaarka t mm | Dulqaadka |
| Dhuumaha birta ah ee aan cillad lahayn | |
| 4.0 ama ka yar | +0.6, -0.5 |
| 4 <t < 25 | +0.150t, -0.125t |
| 25 ama ka badan | +3.7 ama +0.1t, hadba kan weyn -3.0 ama -0.1t, qaado ka weyn |
| Dhuumaha alxanka leh | |
| 5.0 ama ka yar | + / - 0.5 |
| 5.0 <t < 15 | Lagu daro ama laga jaray 0.1 t |
| 15 ama ka badan | + / - 1.5 |
Waqtiga boostada: Seb-26-2023
