Hastelloy B-2 (UNS N10665)
Thawj npib tsib xee-molybdenum alloy nrog cov khoom siv zog ntxiv yog hu ua Hastelloy B-2, thiab nws muaj silicon thiab carbon tsawg heev. Nws muaj lub zog zoo thiab siab corrosion kuj vim nws cov ntsiab lus molybdenum siab. Tsis muaj roj, Hastelloy B-2 alloy muaj qhov sib txawv me ntsis. Kev tiv thaiv corrosion zoo heev yog muab los ntawm non-oxidizing sulfuric acid, ntau yam phosphoric acid concentrations, high-temperature acetic acid, formic acid, lwm yam organic acids, bromic acid, thiab hydrogen chloride gas. Hastelloy B-2 alloy, ntawm qhov tod tes, ua pov thawj zoo heev rau chloride ion txo kev ntxhov siab corrosion tawg.
Hastelloy B-2 muaj lub ntsej muag-centered cubic lattice qauv. Qhov zoo tshaj plaws kev tiv thaiv corrosion tuaj yeem tsuas yog ua tau thaum nws lub koom haum tau huv txaus thiab nyob rau hauv txoj cai siv lead ua qauv. Kev ua brittleness yog txo los ntawm kev tswj qhov tsawg kawg nkaus concentration ntawm hlau thiab chromium alloying Cheebtsam thiab zam ntawm 700-870 degree, Ni4Mo-theem nag lossis daus tuaj yeem pom. Txhawm rau rov ua kom cov ductility thiab txo qis zog, Hastelloy B-2 alloy yuav tsum tau muab tshuaj kho ob qho tib si tom qab ua haujlwm kub thiab feem ntau tom qab txias txias. Raws li kev paub dhau los, kev sib xyaw ua ke feem ntau tsis tsim nyog yog tias qhov txias deformation tsawg dua 7 feem pua ntawm cov fiber ntau elongation.
Chemical Composition (%) ntawm Hastelloy B-2 (UNS N10665)
| CHEMICAL COMPOSITION (%) | ||||||||||
| C, max | Mn, mas | P, max | S, max | Si, max | Cr | Ni | Fe | Cu, max | Mo | Co, max |
| 0.01 | 1.00 | 0.020 | 0.010 | 0.08 | 0.40-0.70 | So | 1.60-2.00 | 0.50 | 26.00-30.00 | 1.00 |
Mechanical Properties of Hastelloy B-2 (UNS N10665)
| MECHANICAL PROPERTIES | |||
| Tensile zog, MPa, min | Yield zog, MPa, min | Elongation (%), min | Hardness, max |
| 758 | 315 | 45 | 90 PAB |
Lub cev muaj zog ntawm Hastelloy B-2 (UNS N10665)
| Lub cev muaj zog | ||||
| Qhov ntom | Melting Point | Modulus ntawm Elasticity | Coefficient ntawm Thermal Expansion | Hluav taws xob Resistivity |
| 9.2 g / cm³ | 1330-1380 degree | 217 GPA | 11.2 μm / m | 137 Ω cm |
Cov yam ntxwv ntawm Hastelloy B-2 (UNS N10665)
- Zoo heev corrosion kuj nyob rau hauv txo tej yam kev mob
- Kev tiv thaiv zoo heev rau cov tsis tshua muaj siab ntawm sulfuric acid thiab ntau yam tsis-oxidizing acids.
- Siab tiv thaiv kev ntxhov siab corrosion tawg (SCC) tshwm sim los ntawm kev txo cov tshuaj chloride.
- Zoo heev tiv thaiv corrosion los ntawm cov organic acids sib txawv
- Zoo heev hydrochloric acid kuj
Daim ntawv thov ntawm Hastelloy B-2 (UNS N10665)
Hastelloy B-2 nquag siv hauv tshuaj, petrochemical, hydrochloric acid distillation, acetic acid synthesis, thiab lwm yam txheej txheem ntau lawm.
Qib sib npaug ntawm Hastelloy B-2 (UNS N10665)
| ASTM | UNS | ISO | WERKSTOFF NR. | GB |
| Hastelloy B-2 | N10665 | NiMo 28 | 2.4615 | SIB 322 |
Thermal Processing ntawm Hastelloy B-2 (UNS N10665)
- Hastelloy B-2 alloy tej zaum yuav thermally ua tiav ntawm qhov kub thiab txias ntawm 1160 degree thiab 900 degree, thiab dej quenching yog cov txheej txheem cua txias.
- Tom qab ua haujlwm kub, annealing yuav tsum tau ua kom lav qhov ua tau zoo los tiv thaiv corrosion.
- Lub workpiece yuav tsum tau muab tso rau hauv qhov kub kub kho cua sov thaum lub sij hawm ua thermal.
