Pipa Baja ASTM A268
Spesifikasi ini mencakup sejumlah tingkat ketebalan dinding nominal, pipa baja tahan karat untuk layanan umum tahan korosi dan suhu tinggi.Sebagian besar kadar ini umumnya dikenal sebagai jenis “kromium lurus” dan dicirikan oleh sifat feromagnetiknya.Dua dari grade ini, TP410 dan UNS S 41500 (Tabel 1), dapat dikeraskan dengan perlakuan panas, dan paduan feritik dengan kromium tinggi sensitif terhadap kerapuhan takik pada pendinginan lambat hingga suhu biasa.Ciri-ciri ini harus dikenali dalam penggunaan bahan-bahan tersebut.Grade TP439 digunakan terutama untuk layanan tangki air panas dan tidak memerlukan perlakuan panas pasca pengelasan untuk mencegah serangan pada zona yang terkena dampak panas.
Komposisi Kimia Bahan | Bahan Komposisi | 201 | 202 | 304 | 316L | 430 |
C | =0,15 | =0,15 | =0,08 | =0,035 | =0,12 | |
Si | =1,00 | =1,00 | =1,00 | =1,00 | =1,00 | |
Mn | 5.5-7.5 | 7.5-10 | =2.00 | =2.00 | =1,00 | |
P | =0,06 | =0,06 | =0,045 | =0,045 | =0,040 | |
S | =0,03 | =0,03 | =0,030 | =0,030 | =0,030 | |
Cr | 13-15 | 14-17 | 18-20 | 16-18 | 16-18 | |
Ni | 0.7-1.1 | 3.5-4.5 | 8-10.5 | 10-14 | ||
Mo | 2.0-3.0 | |||||
Properti mekanik | Barang Bahan | 201 | 202 | 304 | 316 | |
Daya tarik | =535 | =520 | =520 | =520 | ||
Kekuatan Hasil | =245 | =205 | =205 | =205 | ||
Perpanjangan | =30% | =30% | =35% | =35% | ||
Kekerasan (HV) | <105 | <100 | <90 | <90 |
NB | Ukuran | OD mm | 40an mm | 5S mm | 10S mm | S 10 mm | S 20 mm | S 40 mm | S 60 mm | XS/80an mm | S 80 mm | S100 mm | S 120 mm | S 140 mm | S 160 mm | XXS mm |
1/8” | 10.29 | 1.24 | 1.73 | 2.41 | ||||||||||||
1/4” | 13.72 | 1.65 | 2.24 | 3.02 | ||||||||||||
3/8” | 17.15 | 1.65 | 2.31 | 3.20 | ||||||||||||
15 | 1/2” | 21.34 | 2.77 | 1.65 | 2.11 | 2.77 | 3.73 | 3.73 | 4.78 | 7.47 | ||||||
20 | 3/4” | 26.67 | 2.87 | 1.65 | 2.11 | 2.87 | 3.91 | 3.91 | 5.56 | 7.82 | ||||||
25 | 1” | 33.40 | 3.38 | 1.65 | 2.77 | 3.38 | 4.55 | 4.55 | 6.35 | 9.09 | ||||||
32 | 1 1/4” | 42.16 | 3.56 | 1.65 | 2.77 | 3.56 | 4.85 | 4.85 | 6.35 | 9.70 | ||||||
40 | 1 1/2” | 48.26 | 3.68 | 1.65 | 2.77 | 3.68 | 5.08 | 5.08 | 7.14 | 10.15 | ||||||
50 | 2” | 60.33 | 3.91 | 1.65 | 2.77 | 3.91 | 5.54 | 5.54 | 9.74 | 11.07 | ||||||
65 | 2 1/2” | 73.03 | 5.16 | 2.11 | 3.05 | 5.16 | 7.01 | 7.01 | 9.53 | 14.02 | ||||||
80 | 3” | 88,90 | 5.49 | 2.11 | 3.05 | 5.49 | 7.62 | 7.62 | 11.13 | 15.24 | ||||||
90 | 3 1/2” | 101.60 | 5.74 | 2.11 | 3.05 | 5.74 | 8.08 | 8.08 | ||||||||
100 | 4” | 114.30 | 6.02 | 2.11 | 3.05 | 6.02 | 8.56 | 8.56 | 11.12 | 13.49 | 17.12 | |||||
125 | 5” | 141.30 | 6.55 | 2.77 | 3.40 | 6.55 | 9.53 | 9.53 | 12.70 | 15.88 | 19.05 | |||||
150 | 6” | 168.27 | 7.11 | 2.77 | 3.40 | 7.11 | 10.97 | 10.97 | 14.27 | 18.26 | 21.95 | |||||
200 | 8” | 219.08 | 8.18 | 2.77 | 3.76 | 6.35 | 8.18 | 10.31 | 12.70 | 12.70 | 15.09 | 19.26 | 20.62 | 23.01 | 23.22 | |
250 | 10” | 273.05 | 9.27 | 3.40 | 4.19 | 6.35 | 9.27 | 12.70 | 12.70 | 15.09 | 19.26 | 21.44 | 25.40 | 28.58 | 25.40 | |
300 | 12” | 323,85 | 9.53 | 3.96 | 4.57 | 6.35 | 10.31 | 14.27 | 12.70 | 17.48 | 21.44 | 25.40 | 28.58 | 33.32 | 25.40 | |
350 | 14” | 355.60 | 9.53 | 3.96 | 4.78 | 6.35 | 7.92 | 11.13 | 15.09 | 12.70 | 19.05 | 23.83 | 27.79 | 31.75 | 35.71 | |
400 | 16” | 406.40 | 9.53 | 4.19 | 4.78 | 6.35 | 7.92 | 12.70 | 16.66 | 12.70 | 21.44 | 26.19 | 30.96 | 36.53 | 40.49 | |
450 | 18” | 457.20 | 9.53 | 4.19 | 4.78 | 6.35 | 7.92 | 14.27 | 19.05 | 12.70 | 23.83 | 29.36 | 34.93 | 39.67 | 45.24 | |
500 | 20” | 508.00 | 9.53 | 4.78 | 5.54 | 6.35 | 9.53 | 15.09 | 20.62 | 12.70 | 26.19 | 32.54 | 38.10 | 44.45 | 50.01 | |
550 | 22” | 558.80 | 9.53 | 4.78 | 5.54 | 6.35 | 9.53 | 23.22 | 12.70 | 28.58 | 34.93 | 41.28 | 47.63 | 53,98 | ||
600 | 24” | 609.60 | 9.53 | 5.54 | 6.35 | 6.35 | 9.53 | 17.48 | 24.61 | 12.70 | 30.96 | 38.89 | 46.02 | 52.37 | 59.54 | |
650 | 26” | 660.40 | 9.53 | 7.92 | 12.70 | 12.70 | ||||||||||
700 | 28” | 711.20 | 9.53 | 7.92 | 12.70 | 12.70 | ||||||||||
750 | 30” | 762.00 | 9.53 | 6.35 | 7.92 | 7.92 | 12.70 | 12.70 | ||||||||
800 | 32” | 812.80 | 9.53 | 7.92 | 12.70 | 17.48 | 12.70 | |||||||||
850 | 34” | 863.60 | 9.53 | 7.92 | 12.70 | 17.48 | 12.70 | |||||||||
900 | 36” | 914.40 | 9.53 | 7.92 | 12.70 | 19.05 | 12.70 |
Satin/Garis Rambut, Lapisan cermin