Density: 7.8 g/m³
OD: 6.35-762mm
Wall thickness: 0.1-30mm
Length: 1-12m
Equivalent designations: AISI 439, UNS S43035, EN 1.4510
Surface: 180grit, 240 grits, 400grit, 600grit , 1D, 2B, NO.4, 6K, 8K, hairline, satin and mirror finish
Packing: woven bags, wooden box,iron box or as required
Ferritic stainless steel is the preferred material for automobile exhaust pipe
1) Ferritic stainless steel does not contain or contains less precious metal Ni, and the cost of raw materials is low.
2) Ferritic stainless steel has low thermal expansion coefficient, high thermal conductivity, good oxidation resistance under repeated heating and cooling conditions, and good resistance to pitting corrosion.
3) Compared with austenitic stainless steel, ferritic stainless steel has good chloride resistance, stress corrosion and intergranular corrosion resistance.
4) Ferritic stainless steel stabilized by Nb and Ti has excellent creep resistance.
5) Ferritic stainless steel has little resilience in cold forming.
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.
Application:
1. Elevator, escalator decorative board
2. Building decorative panels, such as decorative structural parts, structural tubes
3. Automotive exhaust system components
4. Washing machine inner tube
Chemical Composition:
| Grade | UNS | Chemical Component % | |||||||||
| C | Mn | P | S | Si | Cr | Ni | N | Al | Ti | ||
| 439 | S43035 | 0.03 | 1.00 | 0.04 | 0.03 | 1.00 | 17.0-19.0 | 0.5 | 0.03 | 0.15 | [0.2+4(C+N)]-1.10 |
Mechanical Properties:
|
Grade
|
Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min |
Hardness (HB)
|
|
N/m㎡
|
(≤)N/m㎡
|
（≥）%
|
（≤）HV
|
|
|
439
|
≥415
|
205
|
22
|
183
|
Stainless steel pipe packing:
Production line and warehouse:
Stainless steel pipe test:
