Dacromet / Batang Baja Berulir Nikel ASTM / A193 Standar B8 / B8m Grade
Detail Produk
batang berulir kekuatan tinggi
,batang berulir tarik tinggi
,ASTM / A193 Batang Baja Berulir
ASTM A193 B8 B8m Seng Disepuh Batang baja berulir Galvanis B7 M3-M120 Batang Berulir Baja
ASTM A193 B8 B8m / Seng Disepuh Galvanis B7 / M3-M120 DIN975 DIN976 Baja Cina
ASTM A193: B7, B7M, B16, B8 kelas 1, B8 kelas 2, B8M kelas 1, B8M kelas 2, B8T dll.
ASTM A320: L7, L7M, L43, B8 kelas 1, B8 kelas 2, B8M kelas 1, B8M kelas 2, B8T dll.
Ukuran: 1/4 '' sampai 4 ''
1. Tahu A193 B7 & A193 B7M
1) ASTM A193 adalah bahan perbautan baja paduan untuk bejana tekan, katup, flensa, dan alat kelengkapan untuk layanan suhu tinggi atau tekanan tinggi, atau aplikasi tujuan khusus lainnya.
Bahan menurut ASTM A193 B7 sering tersedia dalam pitch ulir kasar nasional (UNC), jika digunakan dalam aplikasi tradisional, ulir ditentukan 8 ulir per inci (tpi) untuk diameter di atas satu inci.
2) Baut dan stud ASTM A193 Grade B7M identik dalam kimia dengan Grade B7 (baja paduan karbon menengah yang dipadamkan dan ditempa), tetapi memiliki persyaratan kekuatan yang lebih rendah dan memerlukan pengujian kekerasan 100% dari semua pengencang yang diproduksi di lot.Baut Grade B7M tahan terhadap retak korosi tegangan klorida, sulfida, dan hidrogen (SCC) dan sering digunakan dalam layanan gas asam.
2. Komposisi kimia bahan baku A193 B7 & A193 B7M
| Elemen | B7 / B7M (AISI 4140) |
| Karbon | 0,38 - 0,48% |
| mangan | 0,75 - 1,00% |
| Fosfor, maks | 0,04% |
| Belerang, maks | 0,04% |
| silikon | 0,15 - 0,35% |
| kromium | 0,80 - 1,10% |
| Nikel | |
| molibdenum | 0,15 - 0,25% |
3..A193 B7 & A193 B7M Properti
| Nilai | ukuran | Tarik ksi, min | Hasil, ksi, min | Panjang, %, min | RA% min | PBR | HRC |
| A193 B7 | Hingga 2-1/2 | 125 | 105 | 16 | 50 | 321 maks | 35 maks |
| 2-5/8 - 4 | 115 | 95 | 16 | 50 | |||
| 4-1/8 - 6 | 100 | 75 | 18 | 50 |
| B7M | Hingga 4 | 100 | 80 | 18 | 50 | 235 maks | - |
| Lebih dari 4 - 7 | 100 | 75 | 18 | 50 |
| Nilai | Ukuran | Tarik ksi, min | Hasil, ksi, min | Panjang, %, min | RA% min |
| B7 | Hingga 2-1/2 | 125 | 105 | 16 | 50 |
| 2-5/8 - 4 | 115 | 95 | 16 | 50 | |
| 4-1/8 - 7 | 100 | 75 | 18 | 50 | |
| B8 Kelas 1 | Semua | 75 | 30 | 30 | 50 |
| Kelas B8M 1 | Semua | 75 | 30 | 30 | 50 |
| Kelas B8 2 | Hingga 3/4 | 125 | 100 | 12 | 35 |
| 2007/8/1 | 115 | 80 | 15 | 35 | |
| 1-1/8 - 1-1/4 | 105 | 65 | 20 | 35 | |
| 1-3/8 - 1-1/2 | 100 | 50 | 28 | 45 | |
| Kelas B8M 2 | Hingga 3/4 | 110 | 95 | 15 | 45 |
| 2007/8/1 | 100 | 80 | 20 | 45 | |
| 1-1/8 - 1-1/4 | 95 | 65 | 25 | 45 | |
| 1-3/8 - 1-1/2 | 90 | 50 | 30 | 45 | |
| B16 | Hingga 2-1/2 | 125 | 105 | 18 | 50 |
| 2-5/8 - 4 | 110 | 95 | 17 | 45 | |
| 4-1/8 - 7 | 100 | 85 | 16 | 45 |
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