Type 439 Stainless Steel Tubing 17-19% Chromium with 30 ksi Yield Strength for Exhaust Systems
Price:
1.75 USD/KG
MOQ:
100KGS
Delivery Time:
7 Working Days
Brand:
Mittel
Product Description
Type 439 Stainless Steel Tubing Overview
Type 439 (UNS S43035) is an 18% chromium, titanium-stabilized ferritic stainless steel offering corrosion resistance comparable to 304/304L stainless steel. This grade performs exceptionally in annealed, cold-formed, or as-welded conditions across applications where Type 304/304L and Type 430 stainless steels are typically used.
Key Product Advantages
- Excellent resistance to stress corrosion cracking
- Superior weldability due to titanium stabilization
- Enhanced oxidation and corrosion resistance compared to Type 409
- Ideal for tubular manifolds and exhaust system components
Chemical Composition
Chemical Composition (wt%) limits as specified in ASTM A240 and ASME SA240*
| Element | 439 |
|---|---|
| Carbon | 0.030 |
| Chromium | 17.0-19.0 |
| Nickel | 0.50 |
| Manganese | 1.00 |
| Silicon | 1.00 |
| Nitrogen | 0.030 |
| Phosphorus | 0.040 |
| Sulfur | 0.030 |
| Aluminum | 0.15 |
| Titanium | 0.20 +4(C+N) min, 1.10 max |
* Maximum, unless range is indicated
Mechanical Properties
Mechanical property requirements for annealed product as specified in ASTM A240 and ASME SA240
| Property | 439 |
|---|---|
| Yield Strength, min. (ksi) | 30 |
| Tensile Strength, min. (ksi) | 60 |
| Elongation, min. (%) | 22 |
| Hardness, max. (Rb) | 89 |
Physical Properties
| Property | 439 |
|---|---|
| Density, lb/in³ | 0.278 |
| Modulus of Elasticity, psi | 29.0 x 10⁶ |
| Coefficient of Thermal Expansion, 68-212˚F, /˚F | 5.6 x 10⁻⁶ |
| Thermal Conductivity, Btu/ft hr ˚F | 14.0 |
| Specific Heat, Btu/lb ˚F | 0.11 |
| Electrical Resistivity, Microohm-in | 24.8 |
Product Images
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Location
NO.288,YOUYI ROAD ,XI SHAN DISTRICT,WUXI CITY,CHINA
Contact Person
Gao Ben