ASTM A131 kema qurish po'lat plitalari, issiq haddelenmiş kema qurish po'latlari tegishli tasniflash jamiyatiga muvofiq ishlab chiqariladi.
ASTM A131 darajali ABD Eplates ASTM / ASME spetsifikatsiyasi (ASTM A131 / ASME SA 131) bo'yicha etkazib beriladi, bu kemalar uchun strukturaviy po'lat uchun standart spetsifikatsiyadir.
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ASTM A131 D darajasi
| ASTMA131 D darajasi | C % | Si % | Mn.Min % | P % | S % | C+Mn/6 |
| 0.21 | 0.10-0.35 | 0.60 | 0.035 | 0.035 | 0.40 | |
| Hosildorlik kuchi (Mpa) | Kuchlanish kuchi (MPa) | Uzayish 8 dyuym[200mm] (%) | Uzayish 8 dyuym[200mm] (%) | Ta'sir energiyasi (J) | Sinov harorati (daraja) | |
| 235 dan katta yoki teng | 400-520 | 21 dan katta yoki teng | 24 dan katta yoki teng | 27 | -20 |
ASTM A131 E darajasi
| ASTMA131 E darajasi | C % | Si % | Mn.Min % | P % | S % | C+Mn/6 |
| 0.18 | 0.10-0.35 | 0.70 | 0.035 | 0.035 | 0.40 | |
| Hosildorlik kuchi (Mpa) | Kuchlanish kuchi (MPa) | Uzayish 8 dyuym[200mm] (%) | Uzayish 8 dyuym[200mm] (%) | Ta'sir energiyasi (J) | Sinov harorati (daraja) | |
| 235 dan katta yoki teng | 400-520 | 21 dan katta yoki teng | 24 dan katta yoki teng | 27 | -40 |
ASTM A131 B darajasi
| ASTMA131 B darajasi | C % | Si % | Mn.Min % | P % | S % | C+Mn/6 |
| 0.21 | 0.35 | 0.60 | 0.035 | 0.035 | 0.40 | |
| Hosildorlik kuchi (Mpa) | Kuchlanish kuchi (MPa) | Uzayish 8 dyuym[200mm] (%) | Uzayish 8 dyuym[200mm] (%) | Ta'sir energiyasi (J) | Sinov harorati (daraja) | |
| 235 dan katta yoki teng | 400-520 | 21 dan katta yoki teng | 24 dan katta yoki teng | 27 | 0 |
ASTM A131 A darajasi
| ASTMA131 A darajasi | C % | Si % | Mn.Min % | P % | S % | C+Mn/6 |
| 0.21 | 0.50 | 2,5xC | 0.035 | 0.035 | 0.40 | |
| Hosildorlik kuchi (Mpa) | Kuchlanish kuchi (MPa) | Uzayish 8 dyuym[200mm] (%) | Uzayish 8 dyuym[200mm] (%) | Ta'sir energiyasi (J) | Sinov harorati (daraja) | |
| 235 dan katta yoki teng | 400-520 | 21 dan katta yoki teng | 24 dan katta yoki teng | 27 | 20 |
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Issiq teglar: astm a131/a131m abde kemalar uchun konstruktiv po'lat, Xitoy astm a131/a131m abde kemalar uchun konstruktiv po'lat ishlab chiqaruvchilar, etkazib beruvchilar, zavod
