Stainless Steel 439 Pipes bring improved weldability over 430 to your projects. GXH Steels supplies these pipes for demanding industrial applications where standard grades fall short.
What Is Stainless Steel 439?
Grade 439 stainless steel belongs to the Ferritic family. It contains 17% Cr, Ti stabilized. This composition gives the material its improved weldability over 430.
GXH Steels manufactures Stainless Steel 439 Pipes to meet ASTM and international standards. Each pipe goes through quality checks before shipping.
For applications needing non-stabilized, Stainless Steel 430 Pipes provide an excellent choice.
Key Features
Here’s what sets Stainless Steel 439 Pipes apart:
- Corrosion Resistance – Good, with better weld properties than 430.
- Temperature Performance – Rated for service up to 815°C continuous.
- Material Composition – Contains 17% Cr, Ti stabilized for balanced properties.
- Quality Assurance – Every batch includes mill test certificates and documentation.
Projects requiring similar corrosion resistance may also benefit from Grade 304 Pipes.
Stainless Steel 439 Pipes Chemical Composition
The chemical composition of Grade 439 stainless steel per ASTM/AISI standards:
| Element | Composition (%) |
|---|---|
| C | 0.07 |
| Mn | 1.00 |
| Si | 1.00 |
| P | 0.040 |
| S | 0.030 |
| Cr | 17.0-19.0 |
| Ti | 0.20+4(C+N) min |
Stainless Steel 439 Pipes Mechanical Properties
Mechanical properties of Grade 439 in annealed condition:
| Property | Value |
|---|---|
| Tensile Strength | 415 MPa (60190 psi) |
| Yield Strength (0.2%) | 205 MPa (29732 psi) |
| Elongation (in 50mm) | 22% |
| Hardness | 170 HB (Brinell) |
Stainless Steel 439 Pipes Physical Properties
Physical characteristics of Grade 439 stainless steel:
| Property | Value |
|---|---|
| Density | 7.7 g/cm³ |
| Melting Range | 1425-1510°C |
| Thermal Conductivity (at 100°C) | 24.2 W/m·K |
| Specific Heat | 460 J/kg·K |
| Electrical Resistivity | 63 μΩ·cm |
| Thermal Expansion (20-100°C) | 10.4 μm/m·°C |
Available Sizes and Dimensions
GXH Steels supplies Stainless Steel 439 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 439 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 439 Pipes work well for:
- Automotive exhaust
- Heat exchangers
- Sinks
- Automotive industry installations
Benefits
Choosing Stainless Steel 439 Pipes saves you money on replacements and downtime. The material handles automotive exhaust and heat exchangers 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 automotive and appliances 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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