ASTM A312 TP347H Cold-Drawn Polished Stainless Steel Seamless Pipe for High Temperature Applications
Price:
US $4.85-7.25 / kg
MOQ:
50 kg
Delivery Time:
Negotiable
Product Description
ASTM A312 TP347 / 347H Stainless Steel Seamless Pipe
Product Specifications
| Product Name | 347H Stainless Steel Seamless Pipe |
|---|---|
| Shape | Round |
| Outside Diameter | 1/2" - 24" |
| Thickness | SCH5, SCH10, SCH40, SCH80, SCH160, XXS |
| Material Grade | Special steel: Incone 904L, 254MO, 317L and similar alloys |
| Raw Material | Tsing Shan |
| Standard | ASTM A312, A269 |
| Length | Customized to customer requirements |
| Tolerance | Outer Diameter: ±0.2mm, Thickness: ±0.02mm, Length: ±5mm |
| Surface Treatment | Annealing, pickling, sandblasting |
| Marking | LOGO, SIZE, STANDARD, HEAT TREATMENT, Custom markings available |
| Quality Assurance | Dedicated inspection team, strict standards, accepts third-party inspection |
| Applications | Industrial, exhaust systems, water, petroleum, chemical, nuclear, power generation, shipbuilding, paper making, food processing, decoration, machinery and construction |
| Testing | Squash test, extended test, water pressure test, heat treatment, NDT |
| Delivery | Large raw material stock ensures timely order completion |
Alloy 347/347H Overview
Alloy 347 (S34700) is a stabilized stainless steel that provides excellent resistance to intergranular corrosion after exposure to temperatures between 800°F to 1500°F (427°C to 816°C). The alloy is stabilized by columbium and tantalum additions.
Alloy 347H stainless steel offers enhanced creep resistance and higher strength at temperatures above 1000°F (537°C) due to its higher carbon content (0.04-0.10).
Key Properties
General Characteristics
- Columbium-stabilized austenitic stainless steel
- Excellent intergranular corrosion resistance
- Good oxidation resistance and creep strength up to 1500°F (816°C)
- Enhanced performance in strongly oxidizing environments
- Good low-temperature toughness
- Cannot be hardened by heat treatment, only by cold working
Corrosion Resistance
- Superior to Alloy 321 in strongly oxidizing environments up to 1500°F (816°C)
- Suitable for nitric solutions and diluted organic acids
- Resists polythionic acid stress corrosion cracking in hydrocarbon service
- Not recommended for chloride solutions or sulfuric acid applications
Chemical Composition
| Element | 347 | 347H |
|---|---|---|
| Chromium | 17.00-19.00% | 17.00-19.00% |
| Nickel | 9.00-13.00% | 9.00-13.00% |
| Carbon | 0.08% max | 0.04-0.10% |
| Manganese | 2.00% max | 2.00% max |
| Phosphorus | 0.045% max | 0.045% max |
| Sulfur | 0.03% max | 0.03% max |
| Silicon | 0.75% max | 0.75% max |
| Columbium & Tantalum | 10×(C+N) min - 1.00% max | 8×(C+N) min - 1.00% max |
| Iron | Balance | |
Physical Properties
| Density | 0.288 lbs/in³ (7.96 g/cm³) |
| Specific Heat | 0.12 BTU/lb-°F (500 J/kg-°K) |
| Modulus of Elasticity | 28.0 × 10⁶ psi (193 GPa) |
| Thermal Conductivity | 133 BTU/hr/ft²/ft/°F (16.3 W/m-°K) |
| Melting Range | 2550-2635°F (1398-1446°C) |
| Electrical Resistivity | 72 Microhm-cm at 20°F |
Thermal Expansion Coefficients
| Temperature Range | °F/°F | cm/cm°C |
|---|---|---|
| 68-212°F (20-100°C) | 9.2 × 10⁻⁶ | 16.0 × 10⁻⁶ |
| 68-1112°F (20-600°C) | 10.5 × 10⁻⁶ | 18.9 × 10⁻⁶ |
| 68-1832°F (20-1000°C) | 11.4 × 10⁻⁶ | 20.5 × 10⁻⁶ |
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Company
JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Location
No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
Contact Person
Gao Ben