Izidingo Zokwakheka Kwamakhemikhali,%,
C: ≤0.30
MN: 0.29-1.06
P: ≤0.025
S: ≤0.025
Si: ≥0.10
NI: ≤0.40
Cr: ≤0.30
CU: ≤0.40
V: ≤0.08
QAPHELA: ≤0.02
Mo: ≤0.12
* Okuqukethwe kweMaNansese kungakhushulwa ngo-0.05% ngokuncipha ngakunye okungu-0.01% kokuqukethwe kwekhabhoni kuze kufike ku-1.35%.
** Okuqukethwe kwe-niobium, kususelwa esivumelwaneni, kungakhushulwa kufinyelela ku-0.05% ngokuhlaziywa kwe-Melt kanye ne-0.06% yokuhlaziywa komkhiqizo okuqediwe.
Izidingo Zokushisa Ukushisa:
1. Yenza ngokwejwayelekile ngenhla kwama-815 ° C.
2. Yenza ngokwejwayelekile ngenhla kwe-815 ° C, bese ulaka.
I-3. Kushisiwe okwakheke phakathi kuka-845 no-945 ° C, kwabe sekupholile isithando somlilo ngenhla kuka-845 ° C (kumashubhu angenamthungo kuphela).
4. Kufakwe emkhakheni bese kufuzwa ngakwenhla kwephuzu 3.
I-5. Kunziwe lukhuni bese kufuzwa ngenhla kuka-815 ° C.
Izidingo Zokusebenza Kwemishini:
Amandla okuthela: ≥244MPA
Amandla we-Tensile: ≥415MPA
Elongation:
| Imbonakaliso | A333 GR.6 | |
| -Mile thwi | -Guquka | |
| Inani eliphansi lendilinga ejwayelekileisibonakaliso noma isilinganiselo esincane sebanga elinebanga le-4D | 22 | 12 |
| Ama-curtangular amasampula anobukhulu odongeni lwe-5/16 ku. (7.94 MM) futhi ngaphezulu, futhi zonke izinhlobo ezincane ezihlolwe ngaphakathiIsigaba esigcwele esigcawini ku-2 in. (50 mm)izimpawu | 30 | 16.5 |
| I-rectangular speaperens kuze kube ngu-5/16. | A | A |
Vumela ukuncishiswa kwe-1.5% ku-elongation endeitudinal kanye nokwehliswa kwe-1.0% ekuqothulweni okuguqukayo kwe-1 / 3.79 mm) yodonga olufinyelela ku-5/16 ku.
Ukuhlolwa komthelela
Ukushisa kokuhlola: -45 ° C
Lapho kusetshenziswa ama-charpy emthethweni ama-charpy
| Isampula, mm | Isilinganiso esincane samasampula amathathu | Inani eliphansi lokuvulae oF amasampula amathathu |
| I-10 × 10 | 18 | 14 |
| I-10 × 7.5 | 14 | 11 |
| I-10 × 6.67 | 12 | 9 |
| 10 × 5 | 9 | 7 |
| I-10 × 3.33 | 7 | 4 |
| I-10 × 2.5 | 5 | 4 |
Amapayipi ensimbi kufanele abe yi-hydrostal noma ahlolwe ngokungalivezi (i-eddy yamanje noma i-ultrasonic) ngesisekelo segatsha.
Ukubekezelela ububanzi obungaphandle kwepayipi lensimbi:
| Ngaphandle kobubanzi, mm | Ukubekezelela okuhle, mm | Ukubekezelela okungalungile, mm |
| 10.3-48.3 | 0.4 | 0.4 |
| 48.3<D≤114.3 | 0.8 | 0.8 |
| 114.3<D≤219.10 | 1.6 | 0.8 |
| 219.1<D≤457.2 | 2.4 | 0.8 |
| 457.2<D ≤660 | 3.2 | 0.8 |
| I-660<D ≤864 | I-4 | 0.8 |
| I-864<D≤1219 | 4.8 | 0.8 |
Ukubekezelelana kodonga kwepayipi lensimbi:
Noma yiliphi iphuzu ngeke libe ngaphansi kwama-12,5% odonga odongeni oluhlangene. Uma ubukhulu bodonga obuncane buyaliwe, akukho phuzu elizoba ngaphansi kobukhulu obudongeni oludingekayo.
Isikhathi sePosi: Feb-22-2024