アロイ20
説明
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1. Introduction to Alloy20 materials
Alloy20 alloy is a nickel-ferrochrome alloy with good corrosion resistance. It has excellent stress corrosion cracking resistance and good local corrosion resistance. It has good resistance to oxidation and medium reducing corrosion. It has good corrosion resistance in many chemical media. Colleagues have excellent corrosion resistance and crack resistance and good local reducing properties to corrosion of composite media.
2.化学成分
| 合金 | % | ニッケル | クロム | アイアン | カーボン | マンガン | シリコン | 銅 | モリブデン | アルミニウム | チタン | リン | サルファ | Niobium (Nb) |
| アロイ20 | 最低限 | 32.0 | 19.0 | Remain
quantity |
– | – | – | 3.0 | 2.0 | 0.6 | 0.8 | |||
| 最大 | 38.0 | 21.0 | 0.07 | 2.0 | 1.0 | 4.0 | 3.0 | 0.20 | 1.2 | 0.045 | 0.035 | 1.0 |
3.物理的性質
| 密度 | 8.14 G / CM3 |
| 融点 | 1370-1400 ℃ |
| マグネティック | none |
Minimum value of the mechanical properties of Alloy20 at room temperature:
| 状態 | 引張強さ Rm N/mm | 降伏強さ RP0.2 N/mm | 伸び
A5 % |
ブリネル硬度
HB |
| 固体溶融状態 | ≥550 | ≥240 | ≥30 | ≤220 |
IV. Alloy 20 材料特性
Alloy 20 alloy corrosion-resistant alloy is a chromium nickel-molybdenum copper solid solution reinforced iron-nickel-based alloy. Its characteristics are resistant to oxidation-reducing composite media corrosion. NS143 has good corrosion resistance in sulfuric acid, nitric acid and its mixed acid and various other redox media. NS143 can best exert its advantages in dilute sulfuric acid (concentration below 30%) environments, especially in dilute sulfuric acid (concentration below 30%), and has excellent stress corrosion resistance and good local corrosion resistance. NS143 has satisfactory corrosion resistance characteristics in many chemical process media, including highly aggressive inorganic acid solutions, chlorine and various media containing chlorides, dry chlorine, formic acid and acetic acid, acid anhydride, seawater and brine, etc.
V. Application areas
- Hydrometallurgy and sulfuric acid industrial equipment.
- In various chemical processing (such as oil refining, pharmaceuticals, fertilizers and synthetic rubber, etc.), food processing, textiles, papermaking and hydrometallurgy,
- Reactors, heat exchangers, tanks, pumps, valves and other components used under sulfuric acid, nitrosulfur mixed acid, phosphoric acid and other reducing media.
6. Application areas
Can be used in industrial environments of various phosphoric acid, hydrochloric acid, sulfuric acid, chlorine, organic or inorganic chlorine-containing media, such as seawater desalination, petrochemical industry
