HASTELLOY alloy C-22 (UNS N06022) is a versatile nickel-chromium-molybdenum-tungsten alloy renowned for its exceptional resistance to a wide range of aggressive chemicals. This article provides a detailed and rich introduction to HASTELLOY C-22, covering its chemical composition, mechanical properties, performance characteristics at different temperatures, industry applications, available shapes and sizes, production standards, welding and processing capabilities, as well as advantages, disadvantages, and comparisons with similar products.
Komposisi Kimia
Elemen
Komposisi (%)
Nikel (Ni)
56.0 min
Kromium (Cr)
20.0 – 22.5
Molibdenum (Mo)
12.5 – 14.5
Besi (Fe)
2.0 – 6.0
Tungsten (W)
2.5 – 3.5
Kobalt (Co)
2,5 maks
Mangan (Mn)
00,50 maks
Vanadium (V)
00,35 maks
Silikon (Si)
00,08 maks
Karbon (C)
00,010 maks
Fosfor (P)
00,020 maks
Belerang (S)
00,020 maks
Sifat Mekanik
Milik
Nilai
Kekuatan Tarik, ksi (MPa)
115 (790) min
Kekuatan Hasil (offset 0,2%), ksi (MPa)
55 (380) menit
Perpanjangan (% dalam 2 inci)
45 menit
Kekerasan, Rockwell C (HRC)
89 max
Performa pada Suhu Berbeda
HASTELLOY C-22 exhibits excellent performance across varying temperature ranges:
Suhu Kamar:Superior resistance to oxidizing and reducing acids, including sulfuric acid, hydrochloric acid, and acetic acid.
Elevated Temperatures (up to 1250°F / 677°C):Maintains high strength and corrosion resistance in aggressive chemical environments.
Suhu Rendah: Mempertahankan keuletan dan ketangguhan hingga suhu kriogenik, cocok untuk aplikasi yang memerlukan keandalan dalam kondisi ekstrem.
Aplikasi Industri
HASTELLOY alloy C-22 is widely used in several industries due to its exceptional corrosion resistance:
Sektor Industri
Aplikasi
Pengolahan Kimia
Reactors, vessels, and piping systems handling corrosive chemicals such as acids and chlorides.
Petrokimia
Equipment for sulfuric acid regeneration, flue gas desulfurization systems, and chemical processing units.
Farmasi
Peralatan pemrosesan farmasi yang memerlukan ketahanan terhadap bahan kimia agresif.
Pulp dan Kertas
Digesters, bleach plants, and other components exposed to corrosive environments in paper production.
Bentuk, Ukuran, dan Standar Produksi
Formulir Produk
Bentuk Tersedia
Ukuran Tersedia
Standar Produksi
Seprai/Pelat
Piring, Seprai
Ketebalan: 0,025″ – 1.000″ (0,64mm – 25,4mm)
ASTM B575
Bar
Batang bulat, batang heksagonal
Diameter: 0,25″ – 6,0″ (6,35mm – 152,4mm)
ASTM B574
Tabung/Pipa
Tabung mulus, pipa dilas
DARI: 0,5″ – 6,0″ (12,7mm – 152,4mm)
ASTM B619, ASTM B622
Standar dan Nilai yang Sesuai
Negara/Wilayah
Standar/Kelas
Amerika Serikat
UNS N06022
Eropa
2.4602
Jerman
NiCr21Mo14W
Perancis
NC22DNb
Pengelasan, Pengolahan, Pemolesan, Perlakuan Panas
Proses
Detail
Pengelasan
Kemampuan las yang sangat baik menggunakan metode TIG, MIG, memastikan sambungan yang kuat dan andal di lingkungan yang korosif.
Pengolahan
Dapat dikerjakan menggunakan metode konvensional, menawarkan fleksibilitas dalam proses fabrikasi.
Pemolesan
Mampu mencapai hasil akhir yang halus untuk meningkatkan ketahanan terhadap korosi dan daya tarik estetika.
Perlakuan Panas
Solution annealing at 2050°F (1121°C) followed by rapid quenching optimizes material properties and performance.
Pengolahan Dingin, Kelebihan dan Kekurangan
Aspek
Detail
Pemrosesan Dingin
Mempertahankan keuletan dan sifat mampu bentuk pada suhu kamar, memfasilitasi pembentukan dan fabrikasi.
Keuntungan
Ketahanan luar biasa terhadap berbagai bahan kimia korosif, kekuatan mekanik tinggi, dan keandalan di lingkungan yang keras.
Kekurangan
Biaya awal lebih tinggi dibandingkan baja tahan karat konvensional, potensi keterbatasan ketersediaan bentuk dan ukuran tertentu.
Produk Serupa
Nama Produk
Perbandingan
HASTELLOY C-276 (UNS N10276)
Higher nickel content, broader resistance to oxidizing and reducing environments, suitable for more severe corrosive conditions.
HASTELLOY C-4 (UNS N06455)
Enhanced thermal stability, superior resistance to hot contaminated mineral acids, excellent performance in high-temperature applications.
Perbandingan Produk Serupa
Properti/Fitur
Hastelloy C-22
Hastelloy C-276
Hastelloy C-4
Kandungan Nikel (%)
56.0
57.0
65.0
Konten Molibdenum (%)
12.5 – 14.5
16.0
16.0
Konten Kromium (%)
20.0 – 22.5
16.0
16.0
Kekuatan Tarik (ksi)
115 menit
100 menit
100 menit
Kekuatan Hasil (ksi)
55 menit
40 menit
40 menit
Ketahanan Korosi
Sangat baik dalam mengoksidasi dan mereduksi asam, termasuk asam sulfat, klorida, dan asetat.
Beragam lingkungan korosif, termasuk oksidator kuat dan zat pereduksi.
Superior resistance to hot contaminated mineral acids and high-temperature applications.
This article provides an in-depth introduction to HASTELLOY alloy C-22 (UNS N06022), encompassing its chemical composition, mechanical properties, performance in various environments, industry applications, available forms and sizes, production standards, welding and processing capabilities, as well as advantages, disadvantages, and comparisons with similar alloys. The structured format using tables ensures clarity and accessibility of technical information, catering to engineers, manufacturers, and professionals seeking corrosion-resistant materials for demanding applications.
