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439m 439 Stainless Steel Tube Appliacation for Exhaust Systems
Basic Info
| Model NO. | 439 |
| Type | Stainless Steel Pipes |
| Standard | ASTM, AISI |
| Grade | 400 Series |
| Certification | AISI, ASTM |
| Shape | Round |
| Technique | Welded |
| Surface Treatment | Polished |
| Transport Package | Wooden Pallet |
| Specification | OD 6-127mm |
| Trademark | TISCO BAO STEEL |
| Origin | China |
| HS Code | 7304319000 |
| Production Capacity | 50000kgs |
Product Description
439 stainless steel
The 439 steel grade is based on the ordinary ferrite material (430) to reduce the content of C, and the addition of stabilizing elements such as Ti, so that the steel species have improved intergranular corrosion resistance, formability and weldability. Compared with the 304 steel grade, the elongation is low (about 30%), but the strength and corrosion resistance are equivalent, and the corrosion resistance is better than the 200 series materials.
1. chemical composition
| Country | Standard | Grade | (%)Chemical Composition | ≤ | |||||||
| C | Si | Mn | P | S | Cr | Ni | N | Ti | |||
| USA | ASTM | 439 | 0.03 | 1.00 | 1.00 | 0.04 | 0.03 | 17.0- 19.0 | ≤ 0.5 | ≤ 0.04 | 0.2+4(C+N)-1.10 |
| Ger | DIN | 1.4510 | 0.05 | 1.00 | 0.00 | 0.04 | 0.015 | 16.0-18.0 | - | - | 4(C+N)-0.80 |
2. Mechanical Property
| Standard | Mechanical Property | |||
| Tensile Strength | Yield Strength | Elongation(%) | Hardness | |
| N/m | (≤)N/m | (≥)% | (≤)HV | |
| ASTM | ≥415 | 205 | 22 | 180 |
3. Main purpose
Decoration board for elevator and escalator
Building decoration board, such as decorative structural parts, structural pipe
Automobile exhaust system components
Washing machine inner drum
Applications:
Although Alloy 439 is designed principally for the automotive exhaust industry, it has been successfully used in other industrial applications as well. Some examples of applications that call for Alloy 439 include:
Automotive exhaust systems
Catalytic converters
Mufflers
Tailpipes
Farm equipment
Structural support and hangers
Transformer cases
Furnace components
Heat exchanger tubing
