Alloy 20 CB 3 is an austenitic stainless steel with excellent resistance to hot sulphuric acid and many other aggressive environments that would readily attack stainless steel 316. This alloy exhibits superior resistance to stress-corrosion cracking in boiling 20 to 40% sulphuric acid.
| Chemical Composition | Specifications | Designations | Key Features | Typical Applications | ||||||||||||||||||||||||||||||||||||
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ISO 15156-3 (NACE MR 0175) |
W.Nr 2.4660 UNS N08020 AWS 130 |
Excellent resistance to hot sulphuric acid & many other aggressive environments that would attack ST/ST 316 Superior resistance to stress corrosion cracking in boiling 20 – 40% sulphuric acid |
Chemical and allied industries Processing of synthetic rubber High-octane gasoline Solvents Pharmaceuticals Agrichemicals |
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| Density | 8.08 g/cm³ | 0.292 lb/in³ |
| Melting Point | 1425°C | 2600°F |
| Coefficient of Expansion | 14.69 μm/m °C (20 – 100°C) | 8.16 x 10-6 in/in °F (70 – 212°F) |
| Modulus of Rigidity | 73.6 kN/mm² | 10675 ksi |
| Modulus of Elasticity | 193 kN/mm² | 27993 ksi |
| Heat Treatment of Finished Parts | |||||
|---|---|---|---|---|---|
| Condition as supplied by Alloy Wire | Type | Temperature | Time (Hr) | Cooling | |
| °C | °F | ||||
| Annealed or Spring Temper | Stress Relieve | 250 – 530 | 480 – 990 | 1 | Air |
| Properties | ||||
|---|---|---|---|---|
| Condition | Approx. tensile strength | Approx. operating temperature | ||
| N/mm² | ksi | °C | °F | |
| Annealed | 600 – 900 | 87 – 131 | -200 to +300 | -330 to +570 |
| Spring Temper | 1200 – 1800 | 174 – 261 | -200 to +300 | -330 to +570 |
The above tensile strength ranges are typical. If you require different please ask.
