TP409/409L Ferritic Stainless Steel Welded Tube ,ASTM A268 NS S40900
Ferritic stainless steels are classified in the 400 series, usually with 10% to 30% chromium content, and are often chosen for their excellent corrosion resistance and elevated temperature oxidation resistance. With greater strength than carbon steels, ferritics provide an advantage in many applications where thinner materials and reduced weight are necessary, such as automotive emission control systems. They are nonhardenable by heat treating and are always magnetic.
Grade 409 / 409L is a titanium stabilized Ferritic Stainless Steel ,most commonly known for use in automotive exhaust systems. It features good mechanical properties and high temperature corrosion resistance. As a matter of fact, 409 / 409L as a chromium stainless steel can also be used in applications where weldability and corrosion protection are demanded. Although it is susceptible to rust formation, rarely used for decoration purpose, 409 / 409L stainless steel demonstrates excellent corrosion resistance against gas corrosion.
409 / 409L Applications
Due to good resistance to high temperature corrosion and gas corrosion, good mechanical property and weldability, 409 / 409L is extensively used in automotive applications, truck exhaust systems, agricultural equipment, as well as heat and gas turbine exhaust silencers.
Grade 409 / 409L, Type 409 / 409L, Inox 409 / 409L, AISI 409 / 409L, SUH409 / 409L, 1.4512, UNS S40900, UNS S40903, Acero 409 / 409L.
Common Trade Names
409 Stainless, 409 Stainless Steel
Features
Although susceptible to rust formation, making this grade of stainless steel somewhat undesirable for decorative purposes, 409 is extremely resistant to various forms of gas corrosion.
- It is suggested prior to welding, the steel is pre-heated to 150-260C and also suggested post-weld annealing at 760-815C.
Applications
409 is the perfect grade stainless steel to be used in automotive applications where visual appeal is not a top priority. For this reason and for its durability to gas corrosion, 409 is most commonly used in truck exhaust systems, agricultural equipment, and heat and gas turbine exhaust silencers.
| Item Code: | TP409/409L |
| Tube OD.: | 1/4'' - 2'' |
| Wall: | 0.028'' - 0.120'' |
| Length: | 20FT |
| Material: | 409/409L |
| Standard: | ASTM A268 ASME SA268 |
| Finish: | Annealed & Pickled. |
| Type: | Seamless Cold Drawn |
| Certification: | ISO9001:2015 |
| Mill Test Certificate: | EN10204 3.1 |
| Packing: | Sleeved, Wooden Boxed |
Typical Manufacturing Specifications:
ASTM A268
ASME SA268
Chemical Formula
Fe, <0.08% C, 10.5-11.75% Cr, <0.5% Ni, <1.0% Mn, <1.0% Si, <0.045% P, <0.03% S, 6x%C-0.75% Ti
Quality Assurance:
Spezilla's seamless bright annealed stainless steel tubes are produced acc. to the following process and inspection to assure our quality:
1. Chemical Composition Analysis Test With 100% PMI.
2. Solution Annealing / Bright Annealed.
3. 100% Hydrostatic Test and 100% Eddy Current Test
4. Mechanical Tests includes Tension Test, Flattening Test, Flaring Test, Hardness Test.
5. Impact Test subject to Standard request.
6. Grain Size Test and Intergranular Corrosion Test.
7. Visual Test and Endoscope Test for Surface Quality Test
| Grade | C | Mn | Si | P | S | Cr | Ni | Ti |
| TP409 | min. max. | - 0.08 | - 1.00 | - 1.00 | - 0.045 | - 0.030 | 10.5 11.7 | - 0.50 | 6×C-0.75 |
| TP409L | min. max. | - 0.035 | - 1.00 | - 1.00 | - 0.045 | - 0.030 | 10.5 11.7 | - 0.50 | 6×C-0.75 |
| 1.4516 | min. max. | - 0.08 | - 1.50 | - 0.70 | - 0.040 | - 0.015 | 10.5 12.5 | 0.50-1.50 | 0.05-0.35 |
| 1.4512 | min. max. | - 0.030 | - 1.00 | - 1.00 | - 0.040 | - 0.015 | 10.5 12.5 | - 0.50 | 6×(C+N)-0.65
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| Grade: | TP405 | TP410 | TP249 | TP430 | TP443 | TP446-1 | TP446-2 | … | TP409 |
| UNS | S40500 | S41000 | S42900 | S43000 | S44300 | S44600 | S44600 | S40800 | S40900 |
| C, max | 0.08 | 0.15 | 0.12 | 0.12 | 0.20 | 0.20 | 0.12 | 0.08 | 0.08 |
| Mn,max | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.50 | 1.50 | 1.00 | 1.00 |
| P, max | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.045 | 0.045 |
| S, max | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.045 | 0.045 |
| Si, max | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Ni | 0.50max | … | … | … | 0.75max | 0.75max | 0.50max | 0.80max | 0.50max |
| Cr | 11.5-14.5 | 11.5-13.5 | 14.0-16.0 | 16.0-18.0 | 18.0-23.0 | 23.0-27.0 | 23.0-27.0 | 11.5-13.0 | 10.5-11.7 |
| Mo | … | … | … | … | … | … | … | … | … |
| Al | 0.10-0.30 | … | … | … | … | … | … | … | … |
| Cu | … | … | … | … | 0.90-1.25 | … | … | … | … |
| N | … | … | … | … | … | 0.25 | 0.25 | 12xCmin | 6xCmin |
| Ti | … | … | … | … | … | … | … | 1.10max | 0.75max
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TP409/409L Welded Ferritic Stainless Steel Tube Heat Resistance For Heat Exchanger Images
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