20X20H14C2 AISI 309 Stainless Steel Seamless Pipe For High Temperature Container
20X20H14C2 AISI 309 Stainless Steel Seamless Pipe For High Temperature Container
Material
20X20H14C2 (also known as AISI 309) stainless steel is a chromium-nickel alloy steel known for exceptional oxidation and corrosion resistance at elevated temperatures. Its chemical composition and microstructure make it ideal for manufacturing seamless pipes used in high-temperature containers, furnaces, and heat exchangers.
Specification
- Standard: ASTM A213 / A312, ASME SA213 / SA312
- Form: Seamless pipe
- Size Range: Generally available from 1/8 inch to 24 inches (OD)
- Wall Thickness: Schedule 5 to Schedule 160, or as per custom requirements
- Length: Usually 6 meters, 12 meters, or cut to length
- Heat Treatment: Annealed condition for enhanced ductility and toughness
Key Features
- Excellent resistance to oxidation up to 1100°C (2000°F)
- High tensile strength and good creep resistance at elevated temperatures
- Superior corrosion resistance in mildly oxidizing environments
- Good formability and weldability
- Suitable for repeated thermal cycling without degradation
- Resistant to carburization and thermal shock
Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.08 max |
| Chromium (Cr) | 23.0 – 25.0 |
| Nickel (Ni) | 12.0 – 15.0 |
| Manganese (Mn) | 1.00 max |
| Silicon (Si) | 1.00 max |
| Phosphorus (P) | 0.040 max |
| Sulfur (S) | 0.030 max |
| Copper (Cu) | 0.75 max |
| Nitrogen (N) | 0.10 max |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 515 min |
| Yield Strength (MPa) | 205 min |
| Elongation (%) | 40 min |
| Hardness (HRB) | ≤ 95 |
| Modulus of Elasticity | ~200 GPa |
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| ASTM | AISI 309, 309S, 309H |
| EN | 1.4828 |
| GOST | 08H13N10 |
| JIS | SUS309 |
| GB | 20Cr20Ni14C2 |
Application
20X20H14C2 AISI 309 stainless steel seamless pipes are primarily used in environments where high temperature resistance is critical. Typical applications include:
- High temperature containers and vessels
- Furnace and heat exchanger tubes
- Boiler components subjected to oxidizing environments
- Petrochemical and power generation industries
- Aerospace components exposed to elevated temperatures
- Automotive exhaust systems and catalytic converters
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