304 / 304L Mirija ya Chuma cha pua Isiyo na Mfumo
Utangulizi wa Bidhaa
Aloi 304 (S30400) na 304L (S30403) vyuma vya pua ni tofauti za asilimia 18 ya chromium - asilimia 8 ya aloi ya nikeli austenitic, aloi inayojulikana zaidi na inayotumiwa mara nyingi zaidi katika familia ya chuma cha pua. 304/L chuma cha pua kina sifa bora za utengenezaji. Uharibifu wake huiruhusu kuunda kwa urahisi kwa kuwaka, kuinama na kukunja. Ufundi mzuri na maudhui ya chini ya salfa hukuza weldability bora katika programu zinazohitaji.
Nguvu ya juu, upinzani bora wa kutu na maudhui yaliyopunguzwa ya kaboni hufanya Aloi 304 na 304L Vyuma vya pua kuwa muhimu kwa matumizi ambapo kulehemu kunahitajika. Matumizi ni pamoja na ukingo wa usanifu na trim, vifaa vya svetsade vya kemikali, nguo, karatasi, vifaa vya usindikaji wa tasnia ya dawa na kemikali.
Faida nyingine ni upinzani wake kwa oxidation, uundaji bora, urahisi wa kutengeneza na kusafisha, nguvu bora kwa uwiano wa uzito na ushupavu mzuri kwa joto la cryogenic Kwa mazingira ya ukali sana, maudhui ya chini ya Aina ya 304L yanapendekezwa kwa sababu ya kinga yake kubwa kwa kutu ya intergranular.
Aina ya 304L ya chuma cha pua ni toleo la kaboni ya chini zaidi ya chuma cha 304aloi. Kiwango cha chini cha kaboni katika 304L hupunguza mvua mbaya au hatari ya CARBIDE kutokana na kulehemu. 304L, kwa hivyo, inaweza kutumika "kama svetsade" katika mazingira kali ya kutu, na huondoa hitaji la kuchuja.
Daraja hili lina mali ya chini kidogo ya mitambo kuliko daraja la kawaida la 304, lakini bado hutumiwa sana shukrani kwa ustadi wake. Kama vile chuma cha pua cha Type 304, hutumiwa kwa wingi kutengeneza bia na kutengeneza mvinyo, lakini pia kwa madhumuni zaidi ya tasnia ya chakula kama vile vyombo vya kemikali, uchimbaji madini na ujenzi. Ni bora kwa matumizi katika sehemu za chuma kama vile karanga na bolts ambazo zinakabiliwa na maji ya chumvi.
Vipimo vya Bidhaa
ASTM A269, ASTM A213 / ASME SA213 (Imefumwa)
Ulinganisho wa Muundo wa Kemikali
Kanuni | Kawaida | UTUNGAJI WA KEMIKALI | |||||||||
C | Si | Mn | P | S | Ni | Cr | Mo | MENGINEYO | |||
304 | JIS | SUS 304 | 0.080max | 1.00max | 2.00max | 0.040max | 0.030max | 8.00-11.00 | 18.00-20.00 | - | - |
AISI | 304 | 0.080max | 1.00max | 2.00max | 0.045max | 0.030max | 8.00-10.50 | 18,00-20.00 | - | - | |
ASTM | TP 304 | 0.080max | 0.75max | 2.00max | 0.040max | 0.030max | 8.00-11.00 | 18.00-20.00 | - | - | |
DIN | X5CrNi189 Nambari,1,4301 | 0.070max | 1.00max | 2.00max | 0.045max | 0.030max | 8,50-10.00 | 17.00-20.00 | * | - | |
304L | JIS | SUS 304L | 0.030max | 1.00max | 2.00max | 0.040max | 0.030max | 9,00-13.00 | 18.00-20.00 | - | - |
AISI | 304L | 0.030max | 1.00max | 2.00max | 0.045max | 0.030max | 8.00-12.00 | 18.00-20.00 | - | - | |
ASTM | TP 304L | 0.035max | 0.75max | 2.00max | 0.040max | 0.030max | 8,00-13.00 | 18.00-20.00 | - | - | |
DIN | X2CrNi189 Nambari 1,4306 | 0.030max | 1.00max | 2.00max | 0.045max | 0.030max | 10.00-12.50 | 17.00-20.00 | * | - |
Sifa za Mitambo | |
Nguvu ya Mavuno | 30 Ksi dakika |
Nguvu ya Mkazo | 75 Ksi dakika |
Kurefusha (dakika 2) | 35% |
Ugumu (Rockwell B Scale) | 90 HRB upeo |
Uvumilivu wa ukubwa
OD | OD Toleracne | Uvumilivu wa WT |
Inchi | mm | % |
1/8" | +0.08/-0 | +/-10 |
1/4" | +/-0.10 | +/-10 |
Hadi 1/2" | +/-0.13 | +/-15 |
1/2" hadi 1-1/2" , isipokuwa | +/-0.13 | +/-10 |
1-1/2" hadi 3-1/2" , isipokuwa | +/-0.25 | +/-10 |
Kumbuka: Uvumilivu unaweza kujadiliwa kulingana na mahitaji maalum ya mteja |
Kiwango cha juu cha shinikizo kinachoruhusiwa (kipimo: BAR) | ||||||||
Unene wa Ukuta(mm) | ||||||||
0.89 | 1.24 | 1.65 | 2.11 | 2.77 | 3.96 | 4.78 | ||
OD(mm) | 6.35 | 387 | 562 | 770 | 995 | |||
9.53 | 249 | 356 | 491 | 646 | 868 | |||
12.7 | 183 | 261 | 356 | 468 | 636 | |||
19.05 | 170 | 229 | 299 | 403 | ||||
25.4 | 126 | 169 | 219 | 294 | 436 | 540 | ||
31.8 | 134 | 173 | 231 | 340 | 418 | |||
38.1 | 111 | 143 | 190 | 279 | 342 | |||
50.8 | 83 | 106 | 141 | 205 | 251 |
Cheti cha Heshima
Kiwango cha ISO9001/2015
ISO 45001/2018 Kawaida
Cheti cha PED
Cheti cha mtihani wa uoanifu wa hidrojeni TUV
Hapana. | Ukubwa(mm) | |
OD | Thk | |
BA Tube Ukwaru wa uso wa ndani Ra0.35 | ||
1/4″ | 6.35 | 0.89 |
6.35 | 1.00 | |
3/8″ | 9.53 | 0.89 |
9.53 | 1.00 | |
1/2” | 12.70 | 0.89 |
12.70 | 1.00 | |
12.70 | 1.24 | |
3/4” | 19.05 | 1.65 |
1 | 25.40 | 1.65 |
BA Tube Ukwaru wa uso wa ndani Ra0.6 | ||
1/8″ | 3.175 | 0.71 |
1/4″ | 6.35 | 0.89 |
3/8″ | 9.53 | 0.89 |
9.53 | 1.00 | |
9.53 | 1.24 | |
9.53 | 1.65 | |
9.53 | 2.11 | |
9.53 | 3.18 | |
1/2″ | 12.70 | 0.89 |
12.70 | 1.00 | |
12.70 | 1.24 | |
12.70 | 1.65 | |
12.70 | 2.11 | |
5/8″ | 15.88 | 1.24 |
15.88 | 1.65 | |
3/4″ | 19.05 | 1.24 |
19.05 | 1.65 | |
19.05 | 2.11 | |
1″ | 25.40 | 1.24 |
25.40 | 1.65 | |
25.40 | 2.11 | |
1-1/4″ | 31.75 | 1.65 |
1-1/2″ | 38.10 | 1.65 |
2″ | 50.80 | 1.65 |
10A | 17.30 | 1.20 |
15A | 21.70 | 1.65 |
20A | 27.20 | 1.65 |
25A | 34.00 | 1.65 |
32A | 42.70 | 1.65 |
40A | 48.60 | 1.65 |
50A | 60.50 | 1.65 |
8.00 | 1.00 | |
8.00 | 1.50 | |
10.00 | 1.00 | |
10.00 | 1.50 | |
10.00 | 2.00 | |
12.00 | 1.00 | |
12.00 | 1.50 | |
12.00 | 2.00 | |
14.00 | 1.00 | |
14.00 | 1.50 | |
14.00 | 2.00 | |
15.00 | 1.00 | |
15.00 | 1.50 | |
15.00 | 2.00 | |
16.00 | 1.00 | |
16.00 | 1.50 | |
16.00 | 2.00 | |
18.00 | 1.00 | |
18.00 | 1.50 | |
18.00 | 2.00 | |
19.00 | 1.50 | |
19.00 | 2.00 | |
20.00 | 1.50 | |
20.00 | 2.00 | |
22.00 | 1.50 | |
22.00 | 2.00 | |
25.00 | 2.00 | |
28.00 | 1.50 | |
BA Tube, Hakuna ombi kuhusu ukali wa uso wa ndani | ||
1/4″ | 6.35 | 0.89 |
6.35 | 1.24 | |
6.35 | 1.65 | |
3/8″ | 9.53 | 0.89 |
9.53 | 1.24 | |
9.53 | 1.65 | |
9.53 | 2.11 | |
1/2″ | 12.70 | 0.89 |
12.70 | 1.24 | |
12.70 | 1.65 | |
12.70 | 2.11 | |
6.00 | 1.00 | |
8.00 | 1.00 | |
10.00 | 1.00 | |
12.00 | 1.00 | |
12.00 | 1.50 |