AISI 441 , EN 1.4509 hot and cold rolled ferritic stainless steel
sheet and plate
Type 441 is an 18% chromium, dual stabilized ferritic stainless
steel with corrosion resistance
similar to that of 304/304L stainless steel.
This grade may be used in the annealed, cold formed or as-welded
condition in applications where other
stainless steels such as Type 304/304L and Type 430 are used.
Type 441 has good weldability due to titanium and niobium
stabilization and has excellent resistance to
stress corrosion cracking. Type 441 outperforms Type 409 in both
oxidation and corrosion resistance
and typical applications include automotive manifolds and exhaust
system components.
The high temperature strength of Type 441 exceeds that of both
Types 439 and 409 stainless steels.
441 stainless grade is characterised by:
- Elevated hot mechanical properties without risk of σ phase
- formation at intermediate temperatures
- Greater thermal conductivity than austenitic with a lower
- coefficient of expansion.
- Good resistance to pitting corrosion
- Good corrosion resistance in the cold part of the exhaust
- Good oxidation resistance at high temperature up to 950 °c
- Good weldability
- Ease of forming
Chemical composition of stainless 441
| Grade | C | Si | Mn | P | S | Cr | Ni | Nb | N | Ti |
| 441 | 0.03 | 1.00 | 1.00 | 0.040 | 0.030 | 17.5~19.5 | 1.00 | 0.3+9XC min, 0.90 max | 0.030 | 0.10~0.50 |
Typical mechanical properities
| Tensile strength | Yield strength | Elongation | Hardness |
| 490 | 310 | 32 | B78 |
Typical application
18% chromium titanium and niobium-stabilized ferritic stainless
steel 441 applied in various parts of the
vehicles exhaust systems (manifold, tube, catalytic converter and
muffler shell)
We stock 439 hot and cold rolled stainless steel sheet, plate,
strip and coil.
For Details, please Contact
WUXI GUANGLU Special Steel Co., Ltd.
Stainless martensitic • precipitation hardening steel • stainless
ferritic — Our answer to your needs
Tel: +86 510 81812873
Email: export@guanglusteel.com
