Stainless Steel 347 Pipes bring columbium prevents intergranular corrosion to your projects. GXH Steels supplies these pipes for demanding industrial applications where standard grades fall short.
What Is Stainless Steel 347?
Grade 347 stainless steel belongs to the Austenitic family. It contains 18% Cr, 11% Ni, Nb/Ta stabilized. This composition gives the material its columbium prevents intergranular corrosion.
GXH Steels manufactures Stainless Steel 347 Pipes to meet ASTM and international standards. Each pipe goes through quality checks before shipping.
For applications needing titanium-stabilized alternative, Stainless Steel 321 Pipes provide an excellent choice.
Key Features
Here’s what sets Stainless Steel 347 Pipes apart:
- Corrosion Resistance – Superior to 304 in sensitizing range.
- Temperature Performance – Rated for service up to 870°C continuous.
- Material Composition – Contains 18% Cr, 11% Ni, Nb/Ta stabilized for balanced properties.
- Quality Assurance – Every batch includes mill test certificates and documentation.
Projects requiring non-stabilized may also benefit from Grade 304 Pipes.
Stainless Steel 347 Pipes Chemical Composition
The chemical composition of Grade 347 stainless steel per ASTM/AISI standards:
| Element | Composition (%) |
|---|---|
| C | 0.08 |
| Mn | 2.00 |
| Si | 0.75 |
| P | 0.045 |
| S | 0.030 |
| Cr | 17.0-19.0 |
| Ni | 9.0-13.0 |
| Nb | 10xC min |
Stainless Steel 347 Pipes Mechanical Properties
Mechanical properties of Grade 347 in annealed condition:
| Property | Value |
|---|---|
| Tensile Strength | 515 MPa (74694 psi) |
| Yield Strength (0.2%) | 205 MPa (29732 psi) |
| Elongation (in 50mm) | 40% |
| Hardness | 183 HB (Brinell) |
Stainless Steel 347 Pipes Physical Properties
Physical characteristics of Grade 347 stainless steel:
| Property | Value |
|---|---|
| Density | 7.96 g/cm³ |
| Melting Range | 1400-1425°C |
| Thermal Conductivity (at 100°C) | 16.1 W/m·K |
| Specific Heat | 500 J/kg·K |
| Electrical Resistivity | 73 μΩ·cm |
| Thermal Expansion (20-100°C) | 16.6 μm/m·°C |
Available Sizes and Dimensions
GXH Steels supplies Stainless Steel 347 Pipes in the following size range:
| Specification | Range |
|---|---|
| Nominal Pipe Size | 1/8″ to 24″ NPS (DN6 to DN600) |
| Wall Thickness | 0.5mm to 50mm |
| Length | Up to 12 meters (random or fixed) |
| Schedules Available | 5S, 10S, 40S, 80S, SCH 10, SCH 40, SCH 80, SCH 160, XXS |
Applicable Standards
Stainless Steel 347 Pipes conform to these industry standards:
- Seamless Pipes: ASTM A312, ASTM A213, ASTM A269
- Welded Pipes: ASTM A312, ASTM A358, ASTM A409
- Tubes: ASTM A213, ASTM A249, ASTM A269
- General: EN 10088, JIS G4304/G4305
Applications
Stainless Steel 347 Pipes work well for:
- Welded process equipment
- Aircraft exhaust
- Chemical tanks
- Aerospace industry installations
Benefits
Choosing Stainless Steel 347 Pipes saves you money on replacements and downtime. The material handles welded process equipment and aircraft exhaust conditions without degrading quickly. You get pipes that perform as expected, backed by GXH Steels’s technical support.
Why GXH Steels?
GXH Steels has supplied stainless steel products to aerospace and chemical processing sectors for years. Our team knows the technical details of each grade. We help you pick the right specification for your project and provide documentation for your quality requirements.
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