Here's the professional translation of the technical specifications for Hastelloy G-35 alloy:
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### Product Forms & ASTM Standards
| Product Form | ASTM Standard |
|---------------------------|--------------|
| Bars | B 581 |
| Plates, Sheets & Strips | B 582 |
| Seamless Pipes & Fittings | B 622 |
| Welded Nominal Pipes | B 619, B 775 |
| Welded Tubes | B 626, B 751 |
| Welded Fittings | B 366 |
| Forged/Rolled Pipe Flanges & Fittings | B 462 |
| Billets & Bar Stock for Forging | B 472 |
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### Chemical Composition (%)
| Element | Ni (Balance) | Cr | Fe | Mo | W | Co | C | Mn | Si | P | S | Cu | Nb+Ta |
|---------|--------------|------|------|-----|-----|------|-------|-----|------|-------|-------|-----|-------|
| Min | - | 28.0 | 13.0 | 4.0 | 1.5 | - | - | - | - | - | - | 1.0 | 0.30 |
| Max | 31.5 | 17.0 | 6.0 | 4.0 | 5.0 | 0.030| 1.5 | 0.80| 0.040| 0.020 | 2.4 | 1.50 |
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### Physical Properties
- **Density**: 8.22 g/cm³
- **Melting Point**: 1370-1400℃
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### Key Characteristics
Hastelloy® G-35, an upgraded version of G-30, demonstrates exceptional corrosion resistance in wet-process phosphoric acid production environments widely used in fertilizer manufacturing, significantly outperforming both G-30 and stainless steels. Its notable features include:
1. **Localized Corrosion Resistance**: Excellent resistance to chloride-induced pitting and stress corrosion cracking.
2. **Oxidizing Acid Resistance**: High chromium content provides outstanding resistance to nitric acid and other oxidizing acid mixtures.
3. **Reducing Acid Resistance**: Elevated molybdenum content offers moderate resistance to reducing acids.
4. **Caustic Resistance**: Unlike other Ni-Cr-Mo alloys, G-35 effectively resorts dezincification in hot sodium hydroxide solutions.
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### Typical Applications
- Evaporators for wet-process phosphoric acid production
- Pickling equipment using nitric/hydrofluoric acids
- Caustic soda neutralization systems
- Chemical processing systems involving nitric acid and chlorides
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### Note
**Hastelloy®**, **G-35**, and **G-30** are registered trademarks of Haynes International, Inc.
Key technical terms maintained:
- 抗蚀性 → corrosion resistance
- 应力腐蚀开裂 → stress corrosion cracking
- 脱合金元素腐蚀 → dezincification
- 湿法磷酸 → wet-process phosphoric acid
- 苛性钠 → caustic soda
The translation preserves all technical parameters while conforming to ASTM/ISO terminology standards.
